Ukiah Municipal Airport Section 90 Measurement and Payment Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
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Section 90 Measurement and Payment
90-01 Measurement of quantities. All work completed under the contract will be measured by the RPR, or their authorized representatives, using United States Customary Units of Measurement.
The method of measurement and computations to be used in determination of quantities of material furnished and of work performed under the contract will be those methods generally recognized as conforming to good engineering practice.
Unless otherwise specified, longitudinal measurements for area computations will be made horizontally, and no deductions will be made for individual fixtures (or leave-outs) having an area of 9 square feet (0.8 square meters) or less. Unless otherwise specified, transverse measurements for area computations will be the neat dimensions shown on the plans or ordered in writing by the RPR.
Unless otherwise specified, all contract items which are measured by the linear foot such as electrical ducts, conduits, pipe culverts, underdrains, and similar items shall be measured parallel to the base or foundation upon which such items are placed.
in the contract. When a complete str
unit of measurement, the unit will be construed to include all necessary fittings and accessories.
When requested by the Contractor and approved by the RPR in writing, material specified to be measured by the cubic yard (cubic meter) may be weighed, and such weights will be converted to cubic yards (cubic meters) for payment purposes. Factors for conversion from weight measurement to volume measurement will be determined by the RPR and shall be agreed to by the Contractor before such method of measurement of pay quantities is used.
Measurement and Payment Terms
Term Description
Excavation and
Embankment
Volume
In computing volumes of excavation, the average end area method will be used unless otherwise specified.
Measurement and
Proportion by
Weight
avoirdupois. All materials that are measured or proportioned by weights shall be weighed on accurate, independently certified scales by competent, qualified personnel at locations designated by the RPR. If material is shipped by rail, the car weight may be accepted provided that only the actual weight of material is paid for. However, car weights will not be acceptable for material to be passed through mixing plants. Trucks used to haul material being paid for by weight shall be weighed empty daily at such times as the RPR directs, and each truck shall bear a plainly legible identification mark.
Measurement by
Volume
Materials to be measured by volume in the hauling vehicle shall be hauled in approved vehicles and measured therein at the point of delivery. Vehicles for this purpose may be of any size or type acceptable for the materials hauled, provided that the body is of such shape that the actual contents may be readily and accurately determined. All vehicles shall be loaded to at least their water level capacity, and all loads shall be leveled when the vehicles arrive at the point of delivery.
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Term Description
Asphalt Material Asphalt materials will be measured by the gallon (liter) or ton (kg). When measured by volume, such volumes will be measured at 60°F (16°C) or will be corrected to the volume at 60°F (16°C) using ASTM D1250 for asphalts. Net certified scale weights or weights based on certified volumes in the case of rail shipments will be used as a basis of measurement, subject to correction when asphalt material has been lost from the car or the distributor, wasted, or otherwise not incorporated in the work. When asphalt materials are shipped by truck or transport, net certified weights by volume, subject to correction for loss or foaming, will be used for computing quantities.
Cement Cement will be measured by the ton (kg) or hundredweight (km).
Structure Structures will be measured according to neat lines shown on the plans or as altered to fit field conditions.
Timber Timber will be measured by the thousand feet board measure (MFBM) actually incorporated in the structure. Measurement will be based on nominal widths and thicknesses and the extreme length of each piece.
Plates and Sheets The thickness of plates and galvanized sheet used in the manufacture of corrugated metal pipe, metal plate pipe culverts and arches, and metal cribbing will be specified and measured in decimal fraction of inch.
Miscellaneous
Items
When standard manufactured items are specified such as fence, wire, plates, rolled shapes, pipe conduit, etc., and these items are identified by gauge, unit weight, section dimensions, etc., such identification will be considered to be nominal weights or dimensions. Unless more stringently controlled by tolerances in cited specifications, manufacturing tolerances established by the industries involved will be accepted.
Scales Scales must be tested for accuracy and serviced before use. Scales for weighing materials which are required to be proportioned or measured and paid for by weight shall be furnished, erected, and maintained by the Contractor, or be certified permanently installed commercial scales. Platform scales shall be installed and maintained with the platform level and rigid bulkheads at each end.
Scales shall be accurate within 0.5% of the correct weight throughout the range of use. The Contractor shall have the scales checked under the observation of the RPR before beginning work and at such other times as requested. The intervals shall be uniform in spacing throughout the graduated or marked length of the beam or dial and shall not exceed 0.1% of the nominal rated capacity of the scale, but not less than one pound (454 grams). The use of spring balances will not be permitted.
more than correct weight) they will be immediately adjusted. All materials received subsequent to the last previous correct weighting-accuracy test will be reduced by the percentage of error in excess of 0.5%.
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Term Description
In the event inspection reveals the scales have been under-weighing (indicating less than correct weight), they shall be immediately adjusted. No additional payment to the Contractor will be allowed for materials previously weighed and recorded.
Beams, dials, platforms, and other scale equipment shall be so arranged that the operator and the RPR can safely and conveniently view them.
Scale installations shall have available ten standard 50-pound (2.3 km) weights for testing the weighing equipment or suitable weights and devices for other approved equipment.
All costs in connection with furnishing, installing, certifying, testing, and maintaining scales; for furnishing check weights and scale house; and for all other items specified in this subsection, for the weighing of materials for proportioning or payment, shall be included in the unit contract prices for the various items of the project.
Rental Equipment Rental of equipment will be measured by time in hours of actual working time and necessary traveling time of the equipment within the limits of the work.
Special equipment ordered in connection with extra work will be measured as agreed in the change order or supplemental agreement authorizing such work as provided in paragraph 90-05 Payment for Extra Work.
Pay Quantities When the estimated quantities for a specific portion of the work are designated as the pay quantities in the contract, they shall be the final quantities for which payment for such specific portion of the work will be made, unless the dimensions of said portions of the work shown on the plans are revised by the RPR. If revised dimensions result in an increase or decrease in the quantities of such work, the final quantities for payment will be revised in the amount represented by the authorized changes in the dimensions. 90-02 Scope of payment. The Contractor shall receive and accept compensation provided for in the contract as full payment for furnishing all materials, for performing all work under the contract in a complete and acceptable manner, and for all risk, loss, damage, or expense of whatever character arising out of the nature of the work or the execution thereof, subject to the provisions of Section 70, paragraph 70-18, No Waiver of Legal Rights.
ntract price (price
bid) include compensation for certain work or material essential to the item, this same work or material will not also be measured for payment under any other contract item which may appear elsewhere in the contract, plans, or specifications.
90-03 Compensation for altered quantities. When the accepted quantities of work vary from the quantities in the proposal, the Contractor shall accept as payment in full, so far as contract items are concerned, payment at the original contract price for the accepted quantities of work actually completed and accepted.
No allowance, except as provided for in Section 40, paragraph 40-02, Alteration of Work and Quantities, will be made for any increased expense, loss of expected reimbursement, or loss of anticipated profits suffered or claimed by the Contractor which results directly from such alterations or indirectly from their own unbalanced allocation of overhead and profit among the contract items, or from any other cause. 166
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90-04 Payment for omitted items. As specified in Section 40, paragraph 40-03, Omitted Items, the RPR shall have the right to omit from the work (order nonperformance) any contract item, except major contract items, in the best interest of the Owner.
Should the RPR omit or order nonperformance of a contract item or portion of such item from the work, the Contractor shall accept payment in full at the contract prices for any work actually completed and acceptable -perform such contract item.
Accept
will be paid for at the actual cost to the Contractor and shall thereupon become the property of the Owner.
In addition to the reimbursement hereinbefore provided, the Contractor shall be reimbursed for all actual Such additional costs incurred by the Contractor must be directly related to the deleted contract item and shall be supported by certified statements by the Contractor as to the nature the amount of such costs. 90-05 Payment for extra work. Extra work, performed in accordance with Section 40, paragraph 40-04, Extra Work, will be paid for at the contract prices or agreed prices specified in the change order or supplemental agreement authorizing the extra work.
90-06 Partial payments. Partial payments will be made to the Contractor at least once each month as the work progresses. Said payments will be based upon estimates, prepared by the RPR, of the value of the work performed and materials complete and in place, in accordance with the contract, plans, and specifications.
Such partial payments may also include the delivered actual cost of those materials stockpiled and stored in accordance with paragraph 90-07, Payment for Materials on Hand. No partial payment will be made when the amount due to the Contractor since the last estimate amounts to less than five hundred dollars. a. From the total of the amount determined to be payable on a partial payment, 5% percent of such total amount will be deducted and retained by the Owner for amount retained by the Owner will be in effect until the final payment is made except as follows:
(1) Contractor may request release of retainage on work that has been partially accepted by the Owner in accordance with Section 50-03. Contractor must provide a certified invoice to the RPR that supports the value of retainage held by the Owner for partially accepted work.
(2) In lieu of retainage, the Contractor may exercise at its option the establishment of an escrow account per paragraph 90-08.
b. The Contractor is required to pay all subcontractors for satisfactory performance of their contracts no later than 30 days after the Contractor has received a partial payment.
Contractor must provide the Owner evidence of prompt and full payment of retainage held by the prime Contractor to the subcontractor within 30 days after the completed when all the tasks called for in the subcontract have been accomplished and documented as required by the Owner. When the Owner has made an incremental acceptance of a portion of a prime contract, the work of a subcontractor covered by that acceptance is deemed to be satisfactorily completed.
c. When at least 95% of the work has been completed to the satisfaction of the RPR, the estimates of both the contract value and the cost of the remaining work to be done. The Owner may retain an amount not less than twice the contract value or estimated cost, 167
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whichever is greater, of the work remaining to be done. The remainder, less all previous payments and deductions, will then be certified for payment to the Contractor.
It is understood and agreed that the Contractor shall not be entitled to demand or receive partial payment based on quantities of work in excess of those provided in the proposal or covered by approved change orders or supplemental agreements, except when such excess quantities have been determined by the RPR to be a part of the final quantity for the item of work in question.
No partial payment shall bind the Owner to the acceptance of any materials or work in place as to quality or quantity. All partial payments are subject to correction at the time of final payment as provided in paragraph 90-09, Acceptance and Final Payment.
The Contractor shall deliver to the Owner a complete release of all claims for labor and material arising out of this contract before the final payment is made. If any subcontractor or supplier fails to furnish such a release in full, the Contractor may furnish a bond or other collateral satisfactory to the Owner to indemnify the Owner against any potential lien or other such claim. The bond or collateral shall include all costs, expenses, and attorney fees the Owner may be compelled to pay in discharging any such lien or claim. 90-07 Payment for materials on hand. Partial payments may be made to the extent of the delivered cost of materials to be incorporated in the work, provided that such materials meet the requirements of the contract, plans, and specifications and are delivered to acceptable sites on the airport property or at other sites in the vicinity that are acceptable to the Owner. Such delivered costs of stored or stockpiled materials may be included in the next partial payment after the following conditions are met:
a. The material has been stored or stockpiled in a manner acceptable to the RPR at or on an approved site.
b. The Contractor has furnished the RPR with acceptable evidence of the quantity and quality of such stored or stockpiled materials.
c. The Contractor has furnished the RPR with satisfactory evidence that the material and transportation costs have been paid.
d. The Contractor has furnished the Owner legal title (free of liens or encumbrances of any kind) to the material stored or stockpiled.
e. The Contractor has furnished the Owner evidence that the material stored or stockpiled is insured against loss by damage to or disappearance of such materials at any time prior to use in the work. materials shall in no way relieve the Contractor of their responsibility for furnishing and placing such materials in accordance with the requirements of the contract, plans, and specifications.
In no case will the amount of partial payments for materials on hand exceed the contract price for such materials or the contract price for the contract item in which the material is intended to be used.
No partial payment will be made for stored or stockpiled living or perishable plant materials.
The Contractor shall bear all costs associated with the partial payment of stored or stockpiled materials in accordance with the provisions of this paragraph.
90-08 Payment of withheld funds
accordance with the methods described in paragraph 90-06 Partial Payments, the Contractor may request nage into an
escrow account is subject to the following conditions:
a. The Contractor shall bear all expenses of establishing and maintaining an escrow account and escrow agreement acceptable to the Owner.
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b. The Contractor shall deposit to and maintain in such escrow only those securities or bank certificates of deposit as are acceptable to the Owner and having a value not less than the retainage that would otherwise be withheld from partial payment.
c. The Contractor shall enter into an escrow agreement satisfactory to the Owner. d. The Contractor shall obtain the written consent of the surety to such agreement. 90-09 Acceptance and final payment. When the contract work has been accepted in accordance with the requirements of Section 50, paragraph 50-15, Final Acceptance, the RPR will prepare the final estimate of asurements or
computations of the final quantities to be paid under the contract as amended by change order or supplemental agreement. The Contractor and the RPR shall resolve all disputes (if any) in the measurement and computation of final quantities to
-day period, a dispute still exists, the Contractor may approve the ities shall be considered by
the Owner as a claim in accordance with Section 50, paragraph 50-16, Claims for Adjustment and Disputes. receipt of the project closeout documentation required in paragraph 90-11, Contractor Final Project Documentation, final payment will be processed based on the entire sum, or the undisputed sum in case of approval under protest, determined to be due the Contractor less all previous payments and all amounts to be deducted under the provisions of the contract. All prior partial estimates and payments shall be subject to correction in the final estimate and payment.
If the Contractor has filed a claim for additional compensation under the provisions of Section 50, paragraph 50-16, Claims for Adjustments and Disputes, or under the provisions of this paragraph, such claims will be considered by the Owner in accordance with local laws or ordinances. Upon final adjudication of such claims, any additional payment determined to be due the Contractor will be paid pursuant to a supplemental final estimate.
90-10 Construction warranty.
a. In addition to any other warranties in this contract, the Contractor warrants that work performed under this contract conforms to the contract requirements and is free of any defect in equipment, material, workmanship, or design furnished, or performed by the Contractor or any subcontractor or supplier at any tier.
b. This warranty shall continue for a period of one year from the date of final acceptance of the work, except as noted. If the Owner takes possession of any part of the work before final acceptance, this warranty shall continue for a period of one year from the date the Owner takes possession. c.
property, when that damage is the result of the Contra
any defect of equipment, material, workmanship, or design furnished by the Contractor. d. The Contractor shall restore any work damaged in fulfilling the terms and conditions of this clause.
The Contr
repair or replacement.
e. The Owner will notify the Contractor, in writing, within seven (7) days after the discovery of any failure, defect, or damage.
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f. If the Contractor fails to remedy any failure, defect, or damage within 14 days after receipt of notice, the Owner shall have the right to replace, repair, or otherwise remedy the failure, defect, or damage at the g. With respect to all warranties, express or implied, from subcontractors, manufacturers, or suppliers for work performed and materials furnished under this contract, the Contractor shall: (1) Obtain all warranties that would be given in normal commercial practice; (2) Require all warranties to be executed, in writing, for the benefit of the Owner, as directed by the Owner, and (3) Enforce all warranties for the benefit of the Owner.
h. efects, gross mistakes, or fraud.
90-11 Contractor Final Project Documentation. Approval of final payment to the Contractor is contingent upon completion and submittal of the items listed below. The final payment will not be approved until the a. Provide two (2) copies of all manufacturer s warranties specified for materials, equipment, and installations.
b. Provide weekly payroll records (not previously received) from the general Contractor and all subcontractors.
c. Complete final cleanup in accordance with Section 40, paragraph 40-08, Final Cleanup. d. Complete all punch list items identified during the Final Inspection. e. Provide complete release of all claims for labor and material arising out of the Contract. f. Provide a certified statement signed by the subcontractors, indicating actual amounts paid to the Disadvantaged Business Enterprise (DBE) subcontractors and/or suppliers associated with the project. g. When applicable per state requirements, return copies of sales tax completion forms. h. Manufacturer's certifications for all items incorporated in the work. i. All required record drawings, as-built drawings or as-constructed drawings. j. Project Operation and Maintenance (O&M) Manual(s).
k. Security for Construction Warranty.
l. Equipment commissioning documentation submitted, if required.
END OF SECTION 90
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PART 2
FAA General Construction Items
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Ukiah Municipal Airport Item C-100 Contractor Quality Control Program (CQCP) Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
Item C-100 Contractor Quality Control Program (CQCP)
100-1 General. Quality is more than test results. Quality is the combination of proper materials, testing, workmanship, equipment, inspection, and documentation of the project. Establishing and maintaining a culture of quality is key to achieving a quality project. The Contractor shall establish, provide, and maintain an effective Contractor Quality Control Program (CQCP) that details the methods and procedures that will be taken to assure that all materials and completed construction required by this contract conform to contract plans, technical specifications and other requirements, whether manufactured by the Contractor, or procured from subcontractors or vendors. Although guidelines are established and certain minimum requirements are specified here and elsewhere in the contract technical specifications, the Contractor shall assume full responsibility for accomplishing the stated purpose.
The Contractor shall establish a CQCP that will:
a. Provide qualified personnel to develop and implement the CQCP. b. Provide for the production of acceptable quality materials. c. Provide sufficient information to assure that the specification requirements can be met. d. Document the CQCP process.
The Contractor shall not begin any construction or production of materials to be incorporated into the completed work until the CQCP has been reviewed and approved by the Resident Project Representative (RPR). No partial payment will be made for materials subject to specific quality control (QC) requirements until the CQCP has been reviewed and approved.
The QC requirements contained in this section and elsewhere in the contract technical specifications are in addition to and separate from the quality assurance (QA) testing requirements. QA testing requirements are the responsibility of the RPR or Contractor as specified in the specifications.
A Quality Control (QC)/Quality Assurance (QA) workshop with the Engineer, Resident Project be held prior to start of construction. The QC/QA workshop will be facilitated by the Contractor. The Contractor shall coordinate with the Airport and the RPR on time and location of the QC/QA workshop.
Items to be addressed, at a minimum, will include:
a. Review of the CQCP including submittals, QC Testing, Action & Suspension Limits for Production, Corrective Action Plans, Distribution of QC reports, and Control Charts. b. Discussion of the QA program.
c. Discussion of the QC and QA Organization and authority including coordination and information exchange between QC and QA.
d. Establish regular meetings to discuss control of materials, methods and testing. e. Establishment of the overall QC culture.
100-2 Description of program.
a. General description. The Contractor shall establish a CQCP to perform QC inspection and testing of all items of work required by the technical specifications, including those performed by subcontractors.
The CQCP shall ensure conformance to applicable specifications and plans with respect to materials, offsite fabrication, workmanship, construction, finish, and functional performance. The CQCP shall be effective for control of all construction work performed under this Contract and shall specifically include surveillance and tests required by the technical specifications, in addition to other requirements of this section and any other activities deemed necessary by the Contractor to establish an effective level of QC. 174
Ukiah Municipal Airport Item C-100 Contractor Quality Control Program (CQCP) Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
b. Contractor Quality Control Program (CQCP). The Contractor shall describe the CQCP in a written document that shall be reviewed and approved by the RPR prior to the start of any production, construction, or off-site fabrication. The written CQCP shall be submitted to the RPR for review and approval at least 10 c
laboratory must be approved in writing by the RPR prior to the Notice to Proceed (NTP).
The CQCP shall be organized to address, as a minimum, the following:
1. QC organization and resumes of key staff
2. Project progress schedule
3. Submittals schedule
4. Inspection requirements
5. QC testing plan
6. Documentation of QC activities and distribution of QC reports
7. Requirements for corrective action when QC and/or QA acceptance criteria are not met
8. Material quality and construction means and methods. Address all elements applicable to the project that affect the quality of the pavement structure including subgrade, subbase, base, and surface course. Some elements that must be addressed include, but is not limited to mix design, aggregate grading, stockpile management, mixing and transporting, placing and finishing, quality control testing and inspection, smoothness, laydown plan, equipment, and temperature management plan.
The Contractor must add any additional elements to the CQCP that is necessary to adequately control all production and/or construction processes required by this contract. 100-3 CQCP organization. The CQCP shall be implemented by the establishment of a QC organization.
An organizational chart shall be developed to show all QC personnel, their authority, and how these personnel integrate with other management/production and construction functions and personnel.
The organizational chart shall identify all QC staff by name and function, and shall indicate the total staff required to implement all elements of the CQCP, including inspection and testing for each item of work.
If necessary, different technicians can be used for specific inspection and testing functions for different items of work. If an outside organization or independent testing laboratory is used for implementation of all or part of the CQCP, the personnel assigned shall be subject to the qualification requirements of paragraphs 100-03a and 100-03b. The organizational chart shall indicate which personnel are Contractor employees and which are provided by an outside organization.
The QC organization shall, as a minimum, consist of the following personnel:
a. Program Administrator. The Contractor Quality Control Program Administrator (CQCPA) must be a full-time employee of the Contractor, or a consultant engaged by the Contractor. The CQCPA must have a minimum of five (5) years of experience in QC pavement construction with prior QC experience on a project of comparable size and scope as the contract.
Included in the five (5) years of paving/QC experience, the CQCPA must meet at least one of the following requirements:
(1) Professional Engineer with one (1) year of airport paving experience. (2) Engineer-in-training with two (2) years of airport paving experience. (3) National Institute for Certification in Engineering Technologies (NICET) Civil Engineering Technology Level IV with three (3) years of airport paving experience. 175
Ukiah Municipal Airport Item C-100 Contractor Quality Control Program (CQCP) Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
(4) An individual with four (4) years of airport paving experience, with a Bachelor of Science Degree in Civil Engineering, Civil Engineering Technology or Construction.
The CQCPA must have full authority to institute any and all actions necessary for the successful implementation of the CQCP to ensure compliance with the contract plans and technical specifications.
The CQCPA authority must include the ability to immediately stop production until materials and/or processes are in compliance with contract specifications. The CQCPA must report directly to a principal officer of the construction firm. The CQCPA may supervise the Quality Control Program on more than one project provided that person can be at the job site within two (2) hours after being notified of a problem.
b. QC technicians. A sufficient number of QC technicians necessary to adequately implement the CQCP must be provided. These personnel must be either Engineers, engineering technicians, or experienced craftsman with qualifications in the appropriate field equivalent to NICET Level II in Civil Engineering Technology or higher, and shall have a minimum of two (2) years of experience in their area of expertise.
The QC technicians must report directly to the CQCPA and shall perform the following functions:
(1) Inspection of all materials, construction, plant, and equipment for conformance to the technical specifications, and as required by paragraph 100-6. (2) Performance of all QC tests as required by the technical specifications and paragraph100-8. (3) Performance of tests for the RPR when required by the technical specifications.
Certification at an equivalent level of qualification and experience by a state or nationally recognized organization will be acceptable in lieu of NICET certification. c. Staffing levels. The Contractor shall provide sufficient qualified QC personnel to monitor each work activity at all times. Where material is being produced in a plant for incorporation into the work, separate plant and field technicians shall be provided at each plant and field placement location. The scheduling and coordinating of all inspection and testing must match the type and pace of work activity.
The CQCP shall state where different technicians will be required for different work elements. 100-4 Project progress schedule. Critical QC activities must be shown on the project schedule as required by Section 80, paragraph 80-03, Execution and Progress. 100-5 Submittals schedule. The Contractor shall submit a detailed listing of all submittals (for example, mix designs, material certifications) and shop drawings required by the technical specifications. The listing can be developed in a spreadsheet format and shall include as a minimum:
a. Specification item number
b. Item description
c. Description of submittal
d. Specification paragraph requiring submittal
e. Scheduled date of submittal
100-6 Inspection requirements. QC inspection functions shall be organized to provide inspections for all definable features of work, as detailed below. All inspections shall be documented by the Contractor as specified by paragraph 100-9.
Inspections shall be performed as needed to ensure continuing compliance with contract requirements until completion of the particular feature of work. Inspections shall include the following minimum requirements:
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a. During plant operation for material production, QC test results and periodic inspections shall be used to ensure the quality of aggregates and other mix components, and to adjust and control mix proportioning to meet the approved mix design and other requirements of the technical specifications. All equipment used in proportioning and mixing shall be inspected to ensure its proper operating condition.
The CQCP shall detail how these and other QC functions will be accomplished and used. b. During field operations, QC test results and periodic inspections shall be used to ensure the quality of all materials and workmanship. All equipment used in placing, finishing, and compacting shall be inspected to ensure its proper operating condition and to ensure that all such operations are in conformance to the technical specifications and are within the plan dimensions, lines, grades, and tolerances specified. The CQCP shall document how these and other QC functions will be accomplished and used.
100-7 Contractor QC testing facility.
a. For projects that include Item P-401, Item P-403, and Item P-404, the Contractor shall ensure facilities, including all necessary equipment, materials, and current reference standards, are provided that meet requirements in the following paragraphs of ASTM D3666, Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials:
8.1.3 Equipment Calibration and Checks;
8.1.9 Equipment Calibration, Standardization, and Check Records;
8.1.12 Test Methods and Procedures
b. For projects that include P-501, the Contractor shall ensure facilities, including all necessary equipment, materials, and current reference standards, are provided that meet requirements in the following paragraphs of ASTM C1077, Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation:
7 Test Methods and Procedures
8 Facilities, Equipment, and Supplemental Procedures
100-8 QC testing plan. As a part of the overall CQCP, the Contractor shall implement a QC testing plan, as required by the technical specifications. The testing plan shall include the minimum tests and test frequencies required by each technical specification Item, as well as any additional QC tests that the Contractor deems necessary to adequately control production and/or construction processes.
The QC testing plan can be developed in a spreadsheet fashion and shall, as a minimum, include the following:
a. Specification item number (e.g., P-401)
b. Item description (e.g., Hot Mix Asphalt Pavements)
c. Test type (e.g., gradation, grade, asphalt content)
d. Test standard (e.g., ASTM or American Association of State Highway and Transportation Officials (AASHTO) test number, as applicable)
e. Test frequency (e.g., as required by technical specifications or minimum frequency when requirements are not stated)
f. Responsibility (e.g., plant technician)
g. Control requirements (e.g., target, permissible deviations) 177
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The QC testing plan shall contain a statistically-based procedure of random sampling for acquiring test samples in accordance with ASTM D3665. The RPR shall be provided the opportunity to witness QC sampling and testing.
All QC test results shall be documented by the Contractor as required by paragraph 100-9. 100-9 Documentation. The Contractor shall maintain current QC records of all inspections and tests performed. These records shall include factual evidence that the required QC inspections or tests have been performed, including type and number of inspections or tests involved; results of inspections or tests; nature of defects, deviations, causes for rejection, etc.; proposed remedial action; and corrective actions taken.
These records must cover both conforming and defective or deficient features, and must include a statement that all supplies and materials incorporated in the work are in full compliance with the terms of the contract. Legible copies of these records shall be furnished to the RPR daily. The records shall cover all work placed subsequent to the previously furnished records and shall be verified and signed by the CQCPA.
Contractor QC records required for the contract shall include, but are not necessarily limited to, the following records:
a. Daily inspection reports. Each Contractor QC technician shall maintain a daily log of all shall provide factual evidence that continuous QC inspections have been performed and shall, as a minimum, include the following:
(1) Technical specification item number and description (2) Compliance with approved submittals
(3) Proper storage of materials and equipment
(4) Proper operation of all equipment
(5) Adherence to plans and technical specifications
(6) Summary of any necessary corrective actions
(7) Safety inspection.
(8) Photographs
The daily inspection reports shall identify all QC inspections and QC tests conducted, results of inspections, location and nature of defects found, causes for rejection, and remedial or corrective actions taken or proposed.
The daily inspection reports shall be signed by the responsible QC technician and the CQCPA. The RPR shall be provided at least one copy of each daily inspection report on the work day following the day of record. When QC inspection and test results are recorded and transmitted electronically, the results must be archived.
b. Daily test reports. The Contractor shall be responsible for establishing a system that will record all QC test results. Daily test reports shall document the following information:
(1) Technical specification item number and description (2) Test designation
(3) Location
(4) Date of test
(5) Control requirements
(6) Test results
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Ukiah Municipal Airport Item C-100 Contractor Quality Control Program (CQCP) Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
(7) Causes for rejection
(8) Recommended remedial actions
(9) Retests
work period. When required by the technical specifications, the Contractor shall maintain statistical QC charts. When QC daily test results are recorded and transmitted electronically, the results must be archived.
100-10 Corrective action requirements. The CQCP shall indicate the appropriate action to be taken when a process is deemed, or believed, to be out of control (out of tolerance) and detail what action will be taken to bring the process into control. The requirements for corrective action shall include both general requirements for operation of the CQCP as a whole, and for individual items of work contained in the technical specifications.
The CQCP shall detail how the results of QC inspections and tests will be used for determining the need for corrective action and shall contain clear rules to gauge when a process is out of control and the type of correction to be taken to regain process control.
When applicable or required by the technical specifications, the Contractor shall establish and use statistical QC charts for individual QC tests. The requirements for corrective action shall be linked to the control charts.
100-11 Inspection and/or observations by the RPR. All items of material and equipment are subject to inspection and/or observation by the RPR at the point of production, manufacture or shipment to determine if the Contractor, producer, manufacturer or shipper maintains an adequate QC system in conformance with the requirements detailed here and the applicable technical specifications and plans. In addition, all items of materials, equipment and work in place shall be subject to inspection and/or observation by the RPR at the site for the same purpose.
Inspection and/or observations by the RPR does not relieve the Contractor of performing QC inspections of either on-site or off-site Contracto
100-12 Noncompliance.
a. The Resident Project Representative (RPR) will provide written notice to the Contractor of any noncompliance with their CQCP. After receipt of such notice, the Contractor must take corrective action. b. When QC activities do not comply with either the CQCP or the contract provisions or when the Contractor fails to properly operate and maintain an effective CQCP, and no effective corrective actions have been taken after notification of non-compliance, the RPR will recommend the Owner take the following actions:
(1) Order the Contractor to replace ineffective or unqualified QC personnel or subcontractors and/or
(2) Order the Contractor to stop operations until appropriate corrective actions are taken. 179
Ukiah Municipal Airport Item C-100 Contractor Quality Control Program (CQCP) Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
METHOD OF MEASUREMENT
100-13 Basis of measurement and payment. No separate measurement for payment shall be made for the Contractor Quality Control Program (CQCP). CQCP shall be considered necessary and incidental to the work of this Contract.
BASIS OF PAYMENT
100-14 Payment. No payment will be made separately or directly for Contractor Quality Control Program (CQCP). CQCP shall be considered necessary and incidental to the work of this Contract.
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
National Institute for Certification in Engineering Technologies (NICET) ASTM International (ASTM)
ASTM C1077 Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation
ASTM D3665 Standard Practice for Random Sampling of Construction Materials ASTM D3666 Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
END OF ITEM C-100
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181
Ukiah Municipal Airport Item C-105 Mobilization
Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
Item C-105 Mobilization
105-1 Description. This item of work shall consist of, but is not limited to, work and operations necessary for the movement of personnel, equipment, material and supplies to and from the project site for work on the project except as provided in the contract as separate pay items. 105-2 Mobilization limit. Mobilization shall be limited to 10 percent of the total project cost. 105-3 Posted notices. Prior to commencement of construction activities, the Contractor must post the following documents in a prominent and accessible place where they may be easily viewed by all employees of the prime Contractor and by all employees of subcontractors engaged by the prime in accordance with the Office of Federal Contract Compliance Programs Executive Order 11246, as amended; Davis Bacon Wage Poster (WH 1321) -
Applicable Davis-Bacon Wage Rate Determination. These notices must remain posted until final acceptance of the work by the Owner.
105-4 Engineer/RPR field office. An Engineer/RPR field office is not required.
METHOD OF MEASUREMENT
105-5 Basis of measurement and payment.
partial payments will be allowed as follows:
a. With first pay request, 50%.
b. With second pay request, an additional 20%.
c. With third pay request, an additional 20%.
d. After Final Inspection, Staging area clean-up and delivery of all Project Closeout materials as required by Section 90, paragraph 90-11, Contractor Final Project Documentation, the final 10%.
BASIS OF PAYMENT
105-6 Payment will be made under:
Item C-105-6.1 Mobilization per lump sum
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
Office of Federal Contract Compliance Programs (OFCCP)
Executive Order 11246, as amended
EEOC-P/E-1 Equal Employment Opportunity is the Law Poster United States Department of Labor, Wage and Hour Division (WHD) WH 1321 Employee Rights under the Davis-Bacon Act Poster END OF ITEM C-105
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Page Intentionally Blank
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Ukiah, California Runway 15-33 Pavement Rehabilitation, Phase 2 AIP No. 3-06-0268-0XX-20XX 100% Submittal
PARTS 3-13
FAA Technical Specifications
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185
Ukiah Municipal Airport Item P-151 Clearing and Grubbing Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Item P-151 Clearing and Grubbing
DESCRIPTION
151-1.1 This item shall consist of clearing or clearing and grubbing, including the disposal of materials, for all areas within the limits designated on the plans or as required by the Resident Project Representative (RPR).
a. Clearing shall consist of the cutting and removal of all trees, stumps, brush, logs, hedges, the removal of fences and other loose or projecting material from the designated areas. The grubbing of stumps and roots will not be required.
b. Clearing and grubbing shall consist of clearing the surface of the ground of the designated areas of all trees, stumps, down timber, logs, snags, brush, undergrowth, hedges, heavy growth of grass or weeds, fences, structures, debris, and rubbish of any nature, natural obstructions or such material which in the opinion of the RPR is unsuitable for the foundation of strips, pavements, or other required structures, including the grubbing of stumps, roots, matted roots, foundations, and the disposal from the project of all spoil materials resulting from clearing and grubbing.
c. Tree Removal. Tree Removal shall consist of the cutting and removal of isolated single trees or isolated groups of trees, and the grubbing of stumps and roots. The removal of all the trees of this classification shall be in accordance with the requirements for the particular area being cleared.
CONSTRUCTION METHODS
151-2.1 General. The areas denoted on the plans to be cleared shall be staked on the ground by the Contractor as indicated on the plans.
The removal of existing structures and utilities required to permit orderly progress of work shall be accomplished by local agencies, unless otherwise shown on the plans. Whenever a telephone pole, pipeline, conduit, sewer, roadway, or other utility is encountered and must be removed or relocated, the Contractor shall advise the RPR who will notify the proper local authority or owner to secure prompt action.
151-2.1.1 Disposal. All materials removed by clearing or by clearing and grubbing shall be disposed of , except when otherwise directed by the RPR. As far as
practicable, waste concrete and masonry shall be placed on slopes of embankments or channels. When embankments are constructed of such material, this material shall be placed in accordance with requirements for formation of embankments. Any broken concrete or masonry that cannot be used in construction and all other materials not considered suitable for use elsewhere, shall be disposed of by the Contractor. In no case, shall any discarded materials be left in windrows or piles adjacent to or within the airport limits. The manner and location of disposal of materials shall be subject to the approval of the RPR and shall not create an unsightly or objectionable view. When the Contractor is required to locate a disposal area outside the airport property limits, the Contractor shall obtain and file with the RPR permission in writing from the property owner for the use of private property for this purpose. 151-2.1.2 Blasting. Blasting shall not be allowed.
151-2.2 Clearing. The Contractor shall clear the staked or indicated area of all materials as indicated on the plans. Trees unavoidably falling outside the specified clearing limits must be cut up, removed, and disposed of in a satisfactory manner. To minimize damage to trees that are to be left standing, trees shall be felled toward the center of the area being cleared. The Contractor shall preserve and protect from 186
Ukiah Municipal Airport Item P-151 Clearing and Grubbing Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
injury all trees not to be removed. The trees, stumps, and brush shall be cut flush with the original ground surface. The grubbing of stumps and roots will not be required.
Fences shall be removed and disposed of as directed by the RPR. Fence wire shall be neatly rolled and the wire and posts stored on the airport if they are to be used again, or stored at a location designated by the RPR if the fence is to remain the property of a local owner or authority. 151-2.3 Clearing and grubbing. In areas designated to be cleared and grubbed, all stumps, roots, buried logs, brush, grass, and other unsatisfactory materials as indicated on the plans, shall be removed, except where embankments exceeding 3-1/2 feet (105 cm) in depth will be constructed outside of paved areas.
For embankments constructed outside of paved areas, all unsatisfactory materials shall be removed, but sound trees, stumps, and brush can be cut off flush with the original ground and allowed to remain. Tap roots and other projections over 1-1/2 inches (38 mm) in diameter shall be grubbed out to a depth of at least 18 inches (0.5 m) below the finished subgrade or slope elevation.
Any buildings and miscellaneous structures that are shown on the plans to be removed shall be demolished or removed, and all materials shall be disposed of by removal from the site. The cost of removal is incidental to this item. The remaining or existing foundations, wells, cesspools, and like structures shall be destroyed by breaking down the materials of which the foundations, wells, cesspools, etc., are built to a depth at least 2 feet (60 cm) below the existing surrounding ground. Any broken concrete, blocks, or other objectionable material that cannot be used in backfill shall be removed and material and properly compacted.
All holes in embankment areas remaining after the grubbing operation shall have the sides of the holes flattened to facilitate filling with acceptable material and compacting as required in Item P-152. The same procedure shall be applied to all holes remaining after grubbing in areas where the depth of holes exceeds the depth of the proposed excavation.
METHOD OF MEASUREMENT
151-3.1 Clearing shall be considered as incidental to other items of the work. No separate measurement for clearing shall be made.
BASIS OF PAYMENT
151-4.1 Clearing shall be considered as incidental to other items of the work. No separate payment shall be made for clearing.
END OF ITEM P-151
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Ukiah Municipal Airport Item P-153 Controlled Low-Strength Material (CLSM) Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Item P-153 Controlled Low-Strength Material (CLSM)
DESCRIPTION
153-1.1 This item shall consist of furnishing, transporting, and placing a controlled low-strength material (CLSM) as flowable backfill in trenches or at other locations shown on the plans or as directed by the Resident Project Representative (RPR).
MATERIALS
153-2.1 Materials.
a. Cement. Cement shall conform to the requirements of ASTM C150 Type II or V. b. Fly ash. Fly ash shall conform to ASTM C618, Class C or F. c. Fine aggregate (sand). Fine aggregate shall conform to the requirements of ASTM C33 except for aggregate gradation. Any aggregate gradation which produces the specified performance characteristics of the CLSM and meets the following requirements, will be accepted.
Sieve Size Percent Passing by weight
3/4 inch (19.0 mm) 100
No. 200 (75 µm) 0 - 12
d. Water. Water used in mixing or curing shall be from potable water sources. Other sources shall be tested in accordance with ASTM C1602 prior to use.
MIX DESIGN
153-3.1 Proportions. The Contractor shall submit, to the RPR, a mix design including the proportions and source of aggregate, fly ash, cement, water, and approved admixtures. No CLSM mixture shall be produced for payment until the RPR has given written approval of the proportions. The proportions shall be prepared by a laboratory and shall remain in effect for the duration of the project. The proportions shall establish a single percentage or weight for aggregate, fly ash, cement, water, and any admixtures proposed. Laboratory costs are incidental to this item. a. Compressive strength. CLSM shall be designed to achieve a 28-day compressive strength of 100 to 200 psi (690 to 1379 kPa) when tested in accordance with ASTM D4832, with no significant strength gain after 28 days.
b. Consistency. Design CLSM to achieve a consistency that will produce an approximate 8-inch (200 mm) diameter circular-type spread without segregation. CLSM consistency shall be determined per ASTM D6103.
CONSTRUCTION METHODS
153-4.1 Placement.
a. Placement. CLSM may be placed by any reasonable means from the mixing unit into the space to be filled. Agitation is required during transportation and waiting time. Placement shall be performed so structures or pipes are not displaced from their final position and intrusion of CLSM into unwanted areas is avoided. The material shall be brought up uniformly to the fill line shown on the plans or as directed by 188
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the RPR. Each placement of CLSM shall be as continuous an operation as possible. If CLSM is placed in more than one lift, the base lift shall be free of surface water and loose foreign material prior to placement of the next lift.
b. Contractor Quality Control. The Contractor shall collect all batch tickets to verify the CLSM delivered to the project conforms to the mix design. The Contractor shall verify daily that the CLSM is consistent with 153-3.1a and 153-3.1b. Adjustments shall be made as necessary to the proportions and materials as needed. The Contractor shall provide all batch tickets to the RPR. c. Limitations of placement. CLSM shall not be placed on frozen ground. Mixing and placing may begin when the air or ground temperature is at least 35°F (2°C) and rising. Mixing and placement shall stop when the air temperature is 40°F (4°C) and falling or when the anticipated air or ground temperature will be 35°F (2°C) or less in the 24-hour period following proposed placement. At the time of placement, CLSM shall have a temperature of at least 40°F (4°C).
153-4.2 Curing and protection
a. Curing. The air in contact with the CLSM shall be maintained at temperatures above freezing for a minimum of 72 hours. If the CLSM is subjected to temperatures below 32°F (0°C), the material may be rejected by the RPR if damage to the material is observed. b. Protection. The CLSM shall not be subject to loads and shall remain undisturbed by construction activities for a period of 48 hours or until a compressive strength of 15 psi (105 kPa) is obtained. The Contractor shall be responsible for providing evidence to the RPR that the material has reached the desired strength. Acceptable evidence shall be based upon compressive tests made in accordance with paragraph 153-3.1a.
153-4.3 Quality Assurance (QA) Acceptance. CLSM QA acceptance shall be based upon batch tickets provided by the Contractor to the RPR to confirm that the delivered material conforms to the mix design.
METHOD OF MEASUREMENT
153-5.1 Measurement.
No separate measurement for payment shall be made for controlled low strength material (CLSM). CLSM shall be considered necessary and incidental to the work of this Contract.
BASIS OF PAYMENT
153-6.1 Payment.
No payment will be made separately or directly for controlled low strength material (CLSM). CLSM shall be considered necessary and incidental to the work of this Contract.
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM C33 Standard Specification for Concrete Aggregates ASTM C150 Standard Specification for Portland Cement
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ASTM C618 Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
ASTM C595 Standard Specification for Blended Hydraulic Cements ASTM C1602 Standard Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete
ASTM D4832 Standard Test Method for Preparation and Testing of Controlled LowStrength Material (CLSM) Test Cylinders ASTM D6103 Flow Consistency of Controlled Low Strength Material (CLSM) END OF ITEM P-153
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Ukiah Municipal Airport Item P-608 Emulsified Asphalt Seal Coat Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019 100% Submittal
Item P-608 Emulsified Asphalt Seal Coat
DESCRIPTION
608-1.1 This item shall consist of the application of a emulsified asphalt surface treatment composed of an emulsion of natural and refined asphalt materials, water and a polymer additive, for taxiways and runways with the application of a suitable aggregate to maintain adequate surface friction; and airfield secondary and tertiary pavements including low-speed taxiways, shoulders, overruns, roads, parking areas, and other general applications with or without aggregate applied as designated on the plans. The terms seal coat, asphalt sealer, and asphalt material are interchangeable throughout this specification. The term emulsified asphalt means an emulsion of natural and refined asphalt materials.
MATERIALS
608-2.1 Aggregate. The aggregate material shall be a dry, clean, dust and dirt free, sound, durable, angular shaped manufactured specialty sand, such as that used as an abrasive, with a Mohs hardness of 6 to 8. The Contractor shall submit the specialty sand
Certificate of Analysis (COA) indicating that the specialty sand meets the requirements of the specification to the RPR prior to start of construction. The sand must be approved for use by the RPR and shall meet the following gradation limits when tested in accordance with ASTM C136 and ASTM C117:
Aggregate Material Gradation Requirements1
Sieve Designation (square
openings)
Individual Percentage Retained
by Weight
No. 10 (2.00 mm)
No. 14 (1.41 mm)
No. 16 (1.18 mm)
No. 20 (850 µm)
No. 30 (600 µm)
No. 40 (425 µm)
No. 50 (300 µm)
No. 70 (212 µm)
No. 100 (150 µm)
No. 200 (75 µm)
0 0-4
0-8
0-35
20-50
10-45
0-20
0-5
0-2
0-2
1 Locally available sand or abrasive material that is slightly outside of the gradation requirements may be approved by the RPR with concurrence by the seal coat manufacturer for the use of locally available sand or abrasive material. The RPR and manufactur should verify acceptance during application of Control strips indicated under paragraph 608-3.2.
The Contractor shall provide a certification showing particle size analysis and properties of the material delivered for use on the p
the material delivered for use on the project.
608-2.2 Asphalt Emulsion. The asphalt emulsion shall meet the properties in the following table:
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Concentrated Asphalt Emulsion Properties
Properties Specification Limits
Viscosity, Saybolt Furol at 77°F
(25°C)
ASTM D7496 20 100 seconds
Residue by Distillation or Evaporation ASTM D6997 or
ASTM D6934
57% minimum
Sieve Test ASTM D6933 0.1% maximum
24-hour Stability ASTM D6930 1% maximum
5-day Settlement Test ASTM D6930 5.0% maximum
Particle Charge 1 ASTM D7402 Positive
6.5 maximum pH
1 pH may be used in lieu of the particle charge test which is sometimes inconclusive in slow setting, asphalt emulsions.
The asphalt material base residue shall contain not less than 20% gilsonite, or uintaite and shall not contain any tall oil pitch or coal tar material and shall contain no less than one percent (1%) polymer.
Tests on Residue from Distillation or Evaporation
Properties Specification Limits
Viscosity at 275°F (135°C) ASTM D4402 1750 cSt maximum
Solubility in 1, 1, 1 trichloroethylene ASTM D2042 97.5% minimum Penetration ASTM D5 50 dmm maximum
Asphaltenes ASTM D2007 15% minimum
Saturates ASTM D2007 15% maximum
Polar Compounds ASTM D2007 25% minimum
Aromatics ASTM D2007 15% minimum
The asphalt emulsion, when diluted in the volumetric proportion of two parts concentrated asphalt material to one part hot water shall have the following properties:
Two-to-One Dilution Emulsion Properties
Properties Specification Limits
In Ready-to-Apply Form, two parts concentrate to one part water, by volume Viscosity, Saybolt Furol at 77°F (25°C) ASTM D7496 5 50 seconds Residue by Distillation or Evaporation ASTM D6997 or
ASTM D6934
38% minimum
Pumping Stability 1 Pass
1 Pumping stability is tested by pumping one pint (475 ml) of seal coat diluted one (1) part concentrate to one (1) part water, at 77°F (25°C), through a 1/4-inch (6 mm) gear pump operating 1750 rpm for 10 minutes with no significant separation or coagulation.
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The Contractor shall provide a copy of the
emulsified asphalt delivered to the project. If the asphalt emulsion is diluted at other than the verifying the asphalt emulsion properties.
The COA shall be provided to and approved by the RPR before the emulsified asphalt is applied. The for
delivered for use on the project.
The asphalt material storage and handling temperature shall be between 50°F - 160°F (10°C - 70°C) and the material shall be protected from freezing, or whenever outside temperature drops below 40°F (4°C) for prolonged time periods.
Contractor shall provide a list of airport pavement projects, exposed to similar climate conditions, where this product has been successfully applied within at least 5 years of the project. 608-2.3 Water. Water used in mixing or curing shall be from potable water sources. Other sources shall be tested in accordance with ASTM C1602 prior to use. Water used in making and diluting the emulsion shall be potable, with a maximum hardness of 90ppm calcium and 15ppm magnesium; deleterious iron, sulfates, and phosphates maximum 7ppm, and less than 1ppm of organic byproducts. Water shall be a minimum of 140°F (60°C) prior to adding to emulsion.
608-2.4 Polymer. The polymer shall meet the properties in the following table:
Polymer Properties
Properties Limits
Solids Content 47% to 65%,
Percent by Weight
Weight 8.0 to 9.0 pounds/gallon (1.07 to 1.17 kg/L)
pH 3.0 to 8.0
Particle Charge Nonionic/Cationic
Mechanical Stability Excellent
Film Forming Temperature, °C +5°C, minimum
Tg, °C 22°C, maximum
The manufacturer shall provide a copy of the Certificate of Analysis (COA) for the polymer used in the seal coat; and the Contractor shall include the COA with the emulsified asphalt COA when submitting to the RPR.
608-2.5 Seal Coat with Aggregate. The Contractor shall submit friction test data from no less than one of the airport projects identified under 608-2.2. The test data must be from the same project and include technical details on application rates, aggregate rates, and point of contact at the airport to confirm use and success of sealer with aggregate.
Friction test data in accordance with AC 150/5320-12, at 40 or 60 mph (65 or 95 km/h) wet, must include as a minimum; the friction value prior to sealant application; two values, between 24 and 96 hours after application, with a minimum of 24 hours between tests; and one value between 180 days and 360 days after the application. The results of the tests between 24 and 96 hours shall indicate friction is increasing at a rate to obtain similar friction value of the pavement surface prior to application, and the long-term 194
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test shall indicate no apparent adverse effect with time relative to friction values and existing pavement surface.
Seal coat material submittal without required friction performance will not be approved. Friction tests performed on this project cannot be used as a substitute of this requirement.
COMPOSITION AND APPLICATION RATE
608-3.1 Application Rate. The approximate amounts of materials per square yard (square meter) for the asphalt surface treatment shall be as provided in the table for the treatment area(s) at the specified dilution rate(s) as noted on the plans. The actual application rates will vary within the range specified to suit field from
the test area/sections evaluation.
Application Rate
Dilution
Rate
Quantity of Emulsion
gal/yd2(l/m2)
Quantity of Aggregate
lb/yd2(kg/m2)
2:1 0.08-0.17 0.20-0.50
608-3.2 Control areas and control strips. Prior to full application, the control strip must be accepted by the RPR. The surface preparation, personnel, equipment, and method of operation used on the test area(s) and control strip(s) shall be the same as used on the remainder of the work.
A qualif
control areas and/or control strips to determine the appropriate application rate of both emulsion and aggregate to be approved by the RPR.
A test area(s) and control strip(s) shall be applied for each differing asphalt pavement surface identified in the project. The test area(s) and control strip(s) shall be used to determine the material application rate(s) of both emulsion and sand prior to full production.
a. For taxiway, taxilane and apron surfaces. Prior to full application, the Contractor shall place test areas at varying application rates as recommended by the to determine appropriate application rate(s). The test areas will be located on representative section(s) of the pavement to receive the asphalt surface treatment designated by the RPR. b. For runway and high-speed exit taxiway surfaces. Not used.
CONSTRUCTION METHODS
608-4.1 Worker safety. The Contractor shall obtain a Safety Data Sheet (SDS) for both the asphalt emulsion product and sand and require workmen to fol
precautions.
608-4.2 Weather limitations. The asphalt emulsion shall be applied only when the existing pavement surface is dry and when the weather is not foggy, rainy, or when the wind velocity will prevent the uniform application of the material. No material shall be applied in strong winds that interfere with the uniform application of the material(s), or when dust or sand is blowing or when rain is anticipated within eight (8) hours of application completion. The atmospheric temperature and the pavement surface temperature shall both be at, or above 60°F (16°C) and rising. Seal coat shall not be applied when 195
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pavement temperatures are expected to exceed 130ºF within the subsequent 72 hours if traffic will be opened on pavement within those 72 hours. During application, account for wind drift. Cover existing buildings, structures, runway edge lights, taxiway edge lights, informational signs, retro-reflective marking and in-pavement duct markers as necessary to protect against overspray before applying the emulsion. Should emulsion get on any light or marker fixture, promptly clean the fixture. If cleaning is not satisfactory to the RPR, the Contractor shall replace any light, sign or marker with equivalent equipment at no cost to the Owner.
608-4.3 Equipment and tools. The Contractor shall furnish all equipment, tools, and machinery necessary for the performance of the work.
a. Pressure distributor. The emulsion shall be applied with a manufacturer-approved computer ratecontrolled asphalt distributor. The equipment shall be in good working order and contain no contaminants or diluents in the tank. Spray bar tips must be clean, free of burrs, and of a size to maintain an even distribution of the emulsion. Any type of tip or pressure source is suitable that will maintain predetermined flow rates and constant pressure during the application process with application speeds under eight (8) miles per hour (13 km per hour) or seven hundred (700) feet per minute (213 m per minute). The equipment will be tested under pressure for leaks and to ensure proper set-up before use.
The Contractor will provide verification of truck set-up (via a test-shot area), including but not limited to, nozzle tip size appropriate for application per nozzle manufacturer, spray-bar height and pressure and pump speed appropriate for the viscosity and temperature of sealer material, evidence of triple-overlap spray pattern, lack of leaks, and any other factors relevant to ensure the truck is in good working order before use.
The distributor truck shall be equipped with a 12-foot (3.7-m), minimum, spray bar with individual nozzle control. The distributor truck shall be capable of specific application rates in the range of 0.05 to
0.25 gallons per square yard (0.15 to 0.80 liters per square meter). These rates shall be computercontrolled rather than mechanical. The distributor truck shall have an easily accessible thermometer that constantly monitors the temperature of the emulsion and have an operable mechanical tank gauge that can be used to cross-check the computer accuracy.
The distributor truck shall effectively heat and mix the material to the required temperature prior to The distributor shall be equipped with a hand sprayer to spray the emulsion in areas not accessible to the distributor truck.
b. Aggregate spreader. The asphalt distributor truck will be equipped with an aggregate spreader mounted to the distributor truck that can apply sand to the emulsion in a single pass operation without driving through wet emulsion. The aggregate spreader shall be equipped with a variable control system capable of uniformly distributing the sand at the specified rate at varying application widths and speeds.
The aggregate spreader must be adjusted to produce an even and accurate application of specified aggregate. Prior to any seal coat application, the aggregate spreader will be calibrated onsite to ensure acceptable uniformity of spread. The RPR will observe the calibration and verify the results. The aggregate spreader will be re-calibrated each time the aggregate rate is changed either during the application of test strips or production. The Contractor may consult the seal coat manufacturer representative for procedure and guidance. The sander shall have a minimum hopper capacity of 3,000 pounds (1361 kg) of sand. Push-type hand sanders will be allowed for use around lights, signs and other obstructions, if necessary.
c. Power broom/blower. A power broom and/or blower shall be provided for removing loose material from the surface to be treated.
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d. Equipment calibration. Asphalt distributors must be calibrated within the same construction season in accordance with ASTM D2995. The Contractor must furnish a current calibration certification for the asphalt distributor truck from any State or other agency as approved by the RPR. 608-4.4 Preparation of asphalt pavement surfaces. Clean pavement surface immediately prior to placing the seal coat so that it is free of dust, dirt, grease, vegetation, oil or any type of objectionable surface film. Remove oil or grease from the asphalt pavement by scrubbing with a detergent, washing thoroughly with clean water, and then treat these areas with a spot primer. Any additional surface preparation, such as crack repair, shall be in accordance with Item P-101, paragraph 101-3.6. 608-4.5 Emulsion mixing. The application emulsion shall be obtained by blending asphalt material concentrate, water and polymer, if specified. Always add heated water to the asphalt material concentrate, never add asphalt material concentrate to heated water. Mix one part heated water to two parts asphalt material concentrate, by volume.
Add 1% polymer, by volume, to the emulsion mix. If the polymer is added to the emulsion mix at the plant, submit weight scale tickets to the RPR. As an option, the polymer may be added to the emulsion mix at the job site provided the polymer is added slowly while the asphalt distributor truck circulating pump is running. The mix must be agitated for a minimum of 15 minutes or until the polymer is mixed to the satisfaction of the RPR.
608-4.6 Application of asphalt emulsion. The asphalt emulsion shall be applied using a pressure distributor upon the properly prepared, clean and dry surface at the application rate recommended by the roved by the RPR from the test area/sections evaluation for each designated treatment area. The asphalt emulsion should be applied at a temperature between 130°F If low spots and depressions greater than 1/2 inch (12 mm) in depth in the pavement surface cause ponding or puddling of the applied materials, the pavement surface shall be lightly broomed with a broom or brush type squeegee until the pavement surface is free of any pools of excess material.
During all applications, the surfaces of adjacent structures shall be protected to prevent their being spattered or marred.
608-4.7 Application of aggregate material. Immediately following the application of the asphalt emulsion,
the RPR from the test area/sections evaluation for each designated application area, shall be spread uniformly over the asphalt emulsion in a single-pass operation simultaneous with the sealer application.
The aggregate shall be spread to the same width of application as the asphalt material and shall not be applied in such thickness as to cause blanketing.
Sprinkling of additional aggregate material and spraying additional asphalt material over areas that show up having insufficient cover or bitumen, shall be done by hand whenever necessary. In areas where hand work is necessitated, the sand shall be applied before the sealant begins to break.
Minimize aggregate from being broadcast and accumulating on the untreated pavement adjacent to an application pass. Prior to the next application pass, the Contractor shall clean areas of excess or loose aggregate and remove from project site.
QUALITY CONTROL (QC)
608- . knowledgeable of the
material, procedures, and equipment described in the specification is responsible to assist the Contractor and RPR in determining the appropriate application rates of the emulsion and aggregate, as well as recommendations for proper preparation and start-up of seal coat application. Documentation of the 197
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manufacturer experience and knowledge for applying the seal coat product shall be furnished to the RPR a minimum of 10 work days prior to placement of the control strips. The cost of the representative shall be included in bid price.
608-5.2 Contractor qualifications. The Contractor shall provide documentation to the RPR that the seal coat Contractor is qualified to apply the seal coat, including personnel, and equipment, and has made at least three (3) applications similar to this project in the past two (2) years.
MATERIAL ACCEPTANCE
608-6.1 Application rate. The rate of application of the asphalt emulsion shall be verified at least twice per day.
608-6.2 Friction tests. Not used.
METHOD OF MEASUREMENT
608-7.1 Emulsified Asphalt Seal Coat. The quantity of asphalt surface treatment shall be measured by the square yards of material applied in accordance with the plans and specifications and accepted by the RPR.
The Contractor must furnish the RPR with the certified weigh bills when materials are received for the asphalt material used under this contract. The Contractor must not remove material from the tank car or storage tank until initial amounts and temperature measurements have been verified.
BASIS OF PAYMENT
608-8.1 Payment shall be made at the contract unit price per square yard for the asphalt surface treatment applied and accepted by the RPR, and the contract unit price per lump sum for runway friction testing.
This price shall be full compensation for all surface preparation, furnishing all materials, delivery and application of these materials, for all labor, equipment, tools, and incidentals necessary to complete the item, representative to assist with
control strips.
Item P-608-8.1 Emulsified Asphalt Seal Coat per square yard
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM C117 Standard Test Method for Materials Finer than 75- Mineral Aggregates by Washing
ASTM C136 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates ASTM C1602 Standard Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete
ASTM D5 Standard Test Method for Penetration of Asphalt Materials ASTM D244 Standard Test Methods and Practices for Emulsified Asphalts 198
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ASTM D2007 Standard Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption Chromatographic Method
ASTM D2042 Standard Test Method for Solubility of Asphalt Materials in Trichloroethylene
ASTM D2995 Standard Practice for Estimating Application Rate of Bituminous Distributors
ASTM D4402 Standard Test Method for Viscosity Determination of Asphalt at Elevated Temperatures Using a Rotational Viscometer
ASTM D5340 Standard Test Method for Airport Pavement Condition Index Surveys Advisory Circulars (AC)
AC 150/5320-12 Measurement, Construction, and Maintenance of Skid-Resistant Airport Pavement Surfaces
AC 150/5320-17 Airfield Pavement Surface Evaluation and Rating (PASER) Manuals AC 150/5380-6 Guidelines and Procedures for Maintenance of Airport Pavements END OF ITEM P-608
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Ukiah Municipal Airport Item P-603 Emulsified Asphalt Tack Coat Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019 100%
Item P-603 Emulsified Asphalt Tack Coat
DESCRIPTION
603-1.1 This item shall consist of preparing and treating an asphalt or concrete surface with asphalt material in accordance with these specifications and in reasonably close conformity to the lines shown on the plans.
MATERIALS
603-2.1 Asphalt materials. The asphalt material shall be an emulsified asphalt as specified in ASTM D3628 as an asphalt application for tack coat appropriate to local conditions. The emulsified asphalt shall not be diluted.
(COA) for the asphalt material to the Resident Project Representative (RPR) before the asphalt material is applied for review and acceptance. The furnishing of COA for the asphalt material shall not be interpreted material delivered for use on the project.
CONSTRUCTION METHODS
603-3.1 Weather limitations. The tack coat shall be applied only when the existing surface is dry and the atmospheric temperature is 50°F (10°C) or above; the temperature has not been below 35°F (2°C) for the 12 hours prior to application; and when the weather is not foggy or rainy. The temperature requirements may be waived when directed by the RPR.
603-3.2 Equipment. The Contractor shall provide equipment for heating and applying the emulsified asphalt material. The emulsion shall be applied with a manufacturer-approved computer rate-controlled asphalt distributor. The equipment shall be in good working order and contain no contaminants or diluents in the tank. Spray bar tips must be clean, free of burrs, and of a size to maintain an even distribution of the emulsion. Any type of tip or pressure source is suitable that will maintain predetermined flow rates and constant pressure during the application process with application speeds under eight (8) miles per hour (13 km per hour) or seven (700) feet per minute (213 m per minute).
The equipment will be tested under pressure for leaks and to ensure proper set-up before use to verify truck set-up (via a test-shot area), including but not limited to, nozzle tip size appropriate for application, spray-bar height and pressure and pump speed, evidence of triple-overlap spray pattern, lack of leaks, and any other factors relevant to ensure the truck is in good working order before use.
The distributor truck shall be equipped with a minimum 12-foot (3.7-m) spreader spray bar with individual nozzle control with computer-controlled application rates. The distributor truck shall have an easily accessible thermometer that constantly monitors the temperature of the emulsion and have an operable mechanical tank gauge that can be used to cross-check the computer accuracy. If the distributor is not equipped with an operable quick shutoff valve, the prime operations shall be started and stopped on building paper.
The distributor truck shall be equipped to effectively heat and mix the material to the required temperature prior to application as required. Heating and mixing shall be done in accordance with the The distributor shall be equipped with a hand sprayer.
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Asphalt distributors must be calibrated annually in accordance with ASTM D2995. The Contractor must furnish a current calibration certification for the asphalt distributor truck from any State or other agency as approved by the RPR.
A power broom and/or power blower suitable for cleaning the surfaces to which the asphalt tack coat is to be applied shall be provided.
603-3.3 Application of emulsified asphalt material. The emulsified asphalt shall not be diluted.
Immediately before applying the emulsified asphalt tack coat, the full width of surface to be treated shall be swept with a power broom and/or power blower to remove all loose dirt and other objectionable material.
The emulsified asphalt material shall be uniformly applied with an asphalt distributor at the rates appropriate for the conditions and surface specified in the table below. The type of asphalt material and application rate shall be approved by the RPR prior to application.
Emulsified Asphalt
Surface Type Residual Rate, gal/SY
(L/square meter)
Emulsion Application Bar Rate, gal/SY
(L/square meter)
New asphalt 0.02-0.05 (0.09-0.23) 0.03-0.07 (0.13-0.32) Existing asphalt 0.04-0.07 (0.18-0.32) 0.06-0.11 (0.27-0.50) Milled Surface 0.04-0.08 (0.18-0.36) .0.06-0.12 (0.27-0.54) Concrete 0.03-0.05 (0.13-0.23) 0.05-0.08 (0.23-0.36)
After application of the tack coat, the surface shall be allowed to cure without being disturbed for the period of time necessary to permit drying and setting of the tack coat. This period shall be determined by the RPR. The Contractor shall protect the tack coat and maintain the surface until the next course has been placed. When the tack coat has been disturbed by the Contractor, tack coat shall be reapplied at the 603-3.4 Freight and waybills The Contractor shall submit waybills and delivery tickets, during progress of the work. Before the final statement is allowed, file with the RPR certified waybills and certified delivery tickets for all emulsified asphalt materials used in the construction of the pavement covered by the contract. Do not remove emulsified asphalt material from storage until the initial outage and temperature measurements have been taken. The delivery or storage units will not be released until the final outage has been taken.
METHOD OF MEASUREMENT
603-4.1 No separate measurement for payment shall be made for Emulsified Asphalt Tack Coat.
Emulsified Asphalt Tack Coat shall be considered necessary and incidental to the work of this Contract.
BASIS OF PAYMENT
603.5-1 No separate payment shall be made for Emulsified Asphalt Tack Coat. Emulsified Asphalt Tack Coat shall be considered necessary and incidental to the work of this Contract. 201
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REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM D1250 Standard Guide for Use of the Petroleum Measurement Tables ASTM D2995 Standard Practice for Estimating Application Rate and Residual Application Rate of Bituminous Distributors
ASTM D3628 Standard Practice for Selection and Use of Emulsified Asphalts END ITEM P-603
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Ukiah Municipal Airport Item P-610 Concrete for Miscellaneous Structures Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019 100%
Item P-610 Concrete for Miscellaneous Structures
DESCRIPTION
610-1.1 This item shall consist of concrete and reinforcement, as shown on the plans, prepared and constructed in accordance with these specifications. This specification shall be used for all concrete other than airfield pavement which are cast-in-place.
MATERIALS
610-2.1 General. Only approved materials, conforming to the requirements of these specifications, shall be used in the work. Materials may be subject to inspection and tests at any time during their preparation or use. The source of all materials shall be approved by the Resident Project Representative (RPR) before delivery or use in the work. Representative preliminary samples of the materials shall be submitted by the Contractor, when required, for examination and test. Materials shall be stored and handled to ensure preservation of their quality and fitness for use and shall be located to facilitate prompt inspection. All equipment for handling and transporting materials and concrete must be clean before any material or concrete is placed in them.
The use of pit-run aggregates shall not be permitted unless the pit-run aggregate has been screened and washed, and all fine and coarse aggregates stored separately and kept clean. The mixing of different aggregates from different sources in one storage stockpile or alternating batches of different aggregates shall not be permitted.
a. Reactivity. Fine aggregate and coarse aggregates to be used in all concrete shall have been tested separately within six months of the project in accordance with ASTM C1260. Test results shall be submitted to the RPR. The aggregate shall be considered innocuous if the expansion of test specimens, tested in accordance with ASTM C1260, does not exceed 0.08% at 14 days (16 days from casting). If the expansion either or both test specimen is greater than 0.08% at 14 days, but less than 0.20%, a minimum of 25% of Type F fly ash, or between 40% and 55% of slag cement shall be used in the concrete mix.
If the expansion is greater than 0.20% the aggregates shall not be used, and test results for other aggregates must be submitted for evaluation; or aggregates that meet P-501 reactivity test requirements may be utilized.
610-2.2 Coarse aggregate. The coarse aggregate for concrete shall meet the requirements of ASTM C33 and the requirements of Table 4, Class Designation 5S; and the grading requirements shown below, as required for the project.
Coarse Aggregate Grading Requirements
Maximum Aggregate Size ASTM C33, Table 3 Grading
Requirements (Size No.)
1 1/2 inch (37.5 mm) 467 or4 and 67
1 inch (25 mm) 57
¾ inch (19 mm) 67
½ inch (12.5 mm) 7
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610-2.2.1 Coarse Aggregate susceptibility to durability (D) cracking. Not used. 610-2.3 Fine aggregate. The fine aggregate for concrete shall meet all fine aggregate requirements of ASTM C33.
610-2.4 Cement. Cement shall conform to the requirements of ASTM C150 Type II. 610-2.5 Cementitious materials.
a. Fly ash. Fly ash shall meet the requirements of ASTM C618, with the exception of loss of ignition, where the maximum shall be less than 6%. Fly ash shall have a Calcium Oxide (CaO) content of less than 15% and a total available alkali content less than 3% per ASTM C311. Fly ash produced in furnace operations using liming materials or soda ash (sodium carbonate) as an additive shall not be acceptable.
The Contractor shall furnish the previous three most recent, consecutive ASTM C618 reports for each source of fly ash proposed in the concrete mix and shall furnish each additional report as they become available during the project. The reports can be used for acceptance or the material may be tested independently by the RPR.
b. Slag cement (ground granulated blast furnace (GGBF)). Slag cement shall conform to ASTM C989, Grade 100 or Grade 120. Slag cement shall be used only at a rate between 25% and 55% of the total cementitious material by mass.
610-2.6 Water. Water used in mixing or curing shall be from potable water sources. Other sources shall be tested in accordance with ASTM C1602 prior to use.
610-2.7 Admixtures. The Contractor shall submit certificates indicating that the material to be furnished meets all of the requirements indicated below. In addition, the RPR may require the Contractor to submit complete test data from an approved laboratory showing that the material to be furnished meets all of the requirements of the cited specifications. Subsequent tests may be made of samples taken by the RPR from the supply of the material being furnished or proposed for use on the work to determine whether the admixture is uniform in quality with that approved.
a. Air-entraining admixtures. Air-entraining admixtures shall meet the requirements of ASTM C260 and shall consistently entrain the air content in the specified ranges under field conditions. The airentrainment agent and any water reducer admixture shall be compatible. b. Water-reducing admixtures. Water-reducing admixture shall meet the requirements of ASTM C494, Type A, B, or D. ASTM C494, Type F and G high range water reducing admixtures and ASTM C1017 flowable admixtures shall not be used.
c. Other chemical admixtures. The use of set retarding, and set-accelerating admixtures shall be approved by the RPR. Retarding shall meet the requirements of ASTM C494, Type A, B, or D and setaccelerating shall meet the requirements of ASTM C494, Type C. Calcium chloride and admixtures containing calcium chloride shall not be used.
610-2.8 Premolded joint material. Premolded joint material for expansion joints shall meet the requirements of ASTM D1751 or ASTM D1752.
610-2.9 Joint filler. The filler for joints shall meet the requirements of Item P-605, unless otherwise specified.
610-2.10 Steel reinforcement. Reinforcing shall consist of reinforcing steel conforming to the requirements of ASTM A615.
610-2.11 Materials for curing concrete. Curing materials shall conform to ASTM C309. 205
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CONSTRUCTION METHODS
610-3.1 General. The Contractor shall furnish all labor, materials, and services necessary for, and incidental to, the completion of all work as shown on the drawings and specified here. All machinery and equipment used by the Contractor on the work, shall be of sufficient size to meet the requirements of the work. All work shall be subject to the inspection and approval of the RPR. 610-3.2 Concrete Mixture. The concrete shall develop a compressive strength of 4000 psi in 28 days as determined by test cylinders made in accordance with ASTM C31 and tested in accordance with ASTM C39. The concrete shall contain not less than 470 pounds of cementitious material per cubic yard (280 kg per cubic meter). The water cementitious ratio shall not exceed 0.45 by weight. The air content of the concrete shall be 5% +/- 1.2% as determined by ASTM C231 and shall have a slump of not more than 4 inches (100 mm) as determined by ASTM C143.
610-3.3 Mixing. Concrete may be mixed at the construction site, at a central point, or wholly or in part in truck mixers. The concrete shall be mixed and delivered in accordance with the requirements of ASTM C94 or ASTM C685.
The concrete shall be mixed only in quantities required for immediate use. Concrete shall not be mixed while the air temperature is below 40°F (4°C) without the RPRs approval. If approval is granted for mixing under such conditions, aggregates or water, or both, shall be heated and the concrete shall be placed at a temperature not less than 50°F (10°C) nor more than 100°F (38°C). The Contractor shall be held responsible for any defective work, resulting from freezing or injury in any manner during placing and curing, and shall replace such work at his expense.
Retempering of concrete by adding water or any other material is not permitted.
The rate of delivery of concrete to the job shall be sufficient to allow uninterrupted placement of the concrete.
610-3.4 Forms. Concrete shall not be placed until all the forms and reinforcements have been inspected and approved by the RPR. Forms shall be of suitable material and shall be of the type, size, shape, quality, and strength to build the structure as shown on the plans. The forms shall be true to line and grade and shall be mortar-tight and sufficiently rigid to prevent displacement and sagging between supports.
The surfaces of forms shall be smooth and free from irregularities, dents, sags, and holes. The Contractor shall be responsible for their adequacy.
The internal form ties shall be arranged so no metal will show in the concrete surface or discolor the surface when exposed to weathering when the forms are removed. All forms shall be wetted with water or with a non-staining mineral oil, which shall be applied immediately before the concrete is placed. Forms shall be constructed so they can be removed without injuring the concrete or concrete surface. 610-3.5 Placing reinforcement. All reinforcement shall be accurately placed, as shown on the plans, and shall be firmly held in position during concrete placement. Bars shall be fastened together at intersections.
The reinforcement shall be supported by approved metal chairs. Shop drawings, lists, and bending details shall be supplied by the Contractor when required.
610-3.6 Embedded items. Before placing concrete, all embedded items shall be firmly and securely fastened in place as indicated. All embedded items shall be clean and free from coating, rust, scale, oil, or any foreign matter. The concrete shall be spaded and consolidated around and against embedded items.
The embedding of wood shall not be allowed.
610-3.7 Concrete Consistency. The Contractor shall monitor the consistency of the concrete delivered to the project site; collect each batch ticket; check temperature; and perform slump tests on each truck at the project site in accordance with ASTM C143.
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610-3.8 Placing concrete. All concrete shall be placed during daylight hours, unless otherwise approved.
The concrete shall not be placed until the depth and condition of foundations, the adequacy of forms and falsework, and the placing of the steel reinforcing have been approved by the RPR. Concrete shall be placed as soon as practical after mixing, but in no case later than one (1) hour after water has been added to the mix. The method and manner of placing shall avoid segregation and displacement of the reinforcement. Troughs, pipes, and chutes shall be used as an aid in placing concrete when necessary. The concrete shall not be dropped from a height of more than 5 feet (1.5 m). Concrete shall be deposited as nearly as practical in its final position to avoid segregation due to rehandling or flowing. Do not subject concrete to procedures which cause segregation. Concrete shall be placed on clean, damp surfaces, free from running water, or on a properly consolidated soil foundation. 610-3.9 Vibration. Vibration shall follow the guidelines in American Concrete Institute (ACI) Committee 309R, Guide for Consolidation of Concrete.
610-3.10 Joints. Joints shall be constructed as indicated on the plans. 610-3.11 Finishing. All exposed concrete surfaces shall be true, smooth, and free from open or rough areas, depressions, or projections. All concrete horizontal plane surfaces shall be brought flush to the proper elevation with the finished top surface struck-off with a straightedge and floated. 610-3.12 Curing and protection. All concrete shall be properly cured in accordance with the recommendations in American Concrete Institute (ACI) 308R, Guide to External Curing of Concrete.
The concrete shall be protected from damage until project acceptance. 610-3.13 Cold weather placing. When concrete is placed at temperatures below 40°F (4°C), follow the cold weather concreting recommendations found in ACI 306R, Cold Weather Concreting. 610-3.14 Hot weather placing. When concrete is placed in hot weather greater than 85ºF (30 ºC), follow the hot weather concreting recommendations found in ACI 305R, Hot Weather Concreting.
QUALITY ASSURANCE (QA)
610-4.1 Quality Assurance sampling and testing
on the basis of the compressive strength specified in paragraph 610-3.2. The RPR will sample the concrete in accordance with ASTM C172; test the slump in accordance with ASTM C143; test air content in accordance with ASTM C231; make and cure compressive strength specimens in accordance with ASTM C31; and test in accordance with ASTM C39. The QA testing agency will meet the requirements of ASTM C1077.
The Contractor shall provide adequate facilities for the initial curing of cylinders. 610-4.2 Defective work. Any defective work that cannot be satisfactorily repaired as determined by the limited to, uneven dimensions, honeycombing and other voids on the surface or edges of the concrete.
METHOD OF MEASUREMENT
610-5.1 Concrete shall be considered incidental and no separate measurement shall be made of concrete complete in place and accepted.
BASIS OF PAYMENT
610-6.1 Concrete shall be considered incidental and no separate payment shall be made. This price shall be full compensation for furnishing all materials including reinforcement and embedded items and for all 207
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preparation, delivery, installation, and curing of these materials, and for all labor, equipment, tools, and incidentals necessary to complete the item.
Payment will be made under:
Item P-610-6.1 Concrete, incidental to other work items
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM A184 Standard Specification for Welded Deformed Steel Bar Mats for Concrete Reinforcement
ASTM A615 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
ASTM A704 Standard Specification for Welded Steel Plain Bar or Rod Mats for Concrete Reinforcement
ASTM A706 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
ASTM A775 Standard Specification for Epoxy-Coated Steel Reinforcing Bars ASTM A884 Standard Specification for Epoxy-Coated Steel Wire and Welded Wire Reinforcement
ASTM A934 Standard Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars
ASTM A1064 Standard Specification for Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete
ASTM C31 Standard Practice for Making and Curing Concrete Test Specimens in the Field
ASTM C33 Standard Specification for Concrete Aggregates ASTM C39 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
ASTM C94 Standard Specification for Ready-Mixed Concrete ASTM C136 Standard Test Method for Sieve or Screen Analysis of Fine and Coarse Aggregates
ASTM C114 Standard Test Methods for Chemical Analysis of Hydraulic Cement ASTM C136 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates ASTM C143 Standard Test Method for Slump of Hydraulic-Cement Concrete ASTM C150 Standard Specification for Portland Cement
ASTM C171 Standard Specification for Sheet Materials for Curing Concrete ASTM C172 Standard Practice for Sampling Freshly Mixed Concrete 208
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ASTM C231 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
ASTM C260 Standard Specification for Air-Entraining Admixtures for Concrete ASTM C309 Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete
ASTM C311 Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use in Portland-Cement Concrete
ASTM C494 Standard Specification for Chemical Admixtures for Concrete ASTM C618 Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
ASTM C666 Standard Test Method for Resistance of Concrete to Rapid Freezing and Thawing
ASTM C685 Standard Specification for Concrete Made by Volumetric Batching and Continuous Mixing
ASTM C989 Standard Specification for Slag Cement for Use in Concrete and Mortars ASTM C1017 Standard Specification for Chemical Admixtures for Use in Producing Flowing Concrete
ASTM C1077 Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation
ASTM C1157 Standard Performance Specification for Hydraulic Cement ASTM C1260 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
ASTM C1365 Standard Test Method for Determination of the Proportion of Phases in Portland Cement and Portland-Cement Clinker Using X-Ray Powder Diffraction Analysis
ASTM C1602 Standard Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete
ASTM D1751 Standard Specification for Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Asphalt Types)
ASTM D1752 Standard Specification for Preformed Sponge Rubber Cork and Recycled PVC Expansion Joint Fillers for Concrete Paving and Structural Construction
American Concrete Institute (ACI)
ACI 305R Hot Weather Concreting
ACI 306R Cold Weather Concreting
ACI 308R Guide to External Curing of Concrete
ACI 309R Guide for Consolidation of Concrete
END OF ITEM P-610
209
Ukiah Municipal Airport Item P-620 Runway and Taxiway Marking Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Item P-620 Runway and Taxiway Marking
DESCRIPTION
620-1.1 This item shall consist of the preparation and painting of numbers, markings, and stripes on the surface of runways, taxiways, and aprons, in accordance with these specifications and at the locations shown on the plans, or as directed by the Resident Proje this specification.
MATERIALS
620-2.1 Materials acceptance. certified test reports, for materials shipped to the project. The certified test reports shall include a statement that the materials meet preparation; marking materials, including adhesion, flow promoting and/or floatation additive; and application requirements must be submitted and approved by the Resident Project Representative (RPR) prior to the initial application of markings. The reports can be used for material acceptance or the RPR may perform verification testing. The reports shall not be interpreted as a basis for payment. The Contractor shall notify the RPR upon arrival of a shipment of materials to the site. All material shall arrive in sealed containers that are easily quantifiable for inspection by the RPR. 620-2.2 Marking materials.
Table 1. Marking Materials
Paint1 Glass Beads2
Type Color Fed Std. 595
Number
Application Rate
Maximum
Type Application Rate
Minimum
Waterborne
Type II
Coat 1 of 2
Yellow 33538 or 33655 230 ft2/gal No beads No beads
Waterborne
Type II
Coat 1 of 2
White 37925 230 ft2/gal Type III 10 lb/gal
Waterborne
Type II
Coat 2 of 2
Yellow 33538 or 33655 115 ft2/gal Type III 10 lb/gal
Waterborne
Type II
Coat 2 of 2
White 37925 115 ft2/gal Type III 10 lb/gal
Waterborne
Type II
Black 37038 115 ft2/gal No beads No beads
1 See paragraph 620-2.2a
2 See paragraph 620-2.2b
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Ukiah Municipal Airport Item P-620 Runway and Taxiway Marking Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
a. Paint. Paint shall be waterborne in accordance with the requirements of this paragraph. Paint colors shall comply with Federal Standard No. 595.Waterborne. Paint shall meet the requirements of Federal Specification TT-P-1952F, Type II. The non-volatile portion of the vehicle for all paint types shall be composed of a 100% acrylic polymer as determined by infrared spectral analysis. b. Reflective media. Glass beads for white and yellow paint shall meet the requirements for Federal Specification TT-B-1325D II.
Glass beads shall be treated with all compatible coupling agents recommended by the manufacturers of the paint and reflective media to ensure adhesion and embedment.
Glass beads shall not be used in black and green paint.
CONSTRUCTION METHODS
620-3.1 Weather limitations. Painting shall only be performed when the surface is dry, and the ambient accordance with paragraph 620-2.1. Painting operations shall be discontinued when the ambient or recommendations. Markings shall not be applied
when the wind speed exceeds 10 mph unless windscreens are used to shroud the material guns. Markings recommendations for application and dry time.
620-3.2 Equipment. Equipment shall include the apparatus necessary to properly clean the existing surface, a mechanical marking machine, a bead dispensing machine, and such auxiliary hand-painting equipment as may be necessary to satisfactorily complete the job.
The mechanical marker shall be an atomizing spray-type or airless type marking machine with automatic glass bead dispensers suitable for application of traffic paint. It shall produce an even and uniform film thickness and appearance of both paint and glass beads at the required coverage and shall apply markings of uniform cross-sections and clear-cut edges without running or spattering and without over spray. The marking equipment for both paint and beads shall be calibrated daily. 620-3.3 Preparation of surfaces. Immediately before application of the paint, the surface shall be dry and free from dirt, grease, oil, laitance, or other contaminates that would reduce the bond between the paint and the pavement. Use of any chemicals or impact abrasives during surface preparation shall be approved in advance by the RPR. After the cleaning operations, sweeping, blowing, or rinsing with pressurized water shall be performed to ensure the surface is clean and free of grit or other debris left from the cleaning process.
a. Preparation of new pavement surfaces. The area to be painted shall be cleaned by broom, blower, water blasting, or by other methods approved by the RPR to remove all contaminants, including PCC curing compounds, minimizing damage to the pavement surface. b. Preparation of pavement to remove existing markings. Existing pavement markings shall receive 95% removal by rotary grinding, water blasting, or by other methods approved by the RPR minimizing damage to the pavement surface. The removal area may need to be larger than the area of the markings to eliminate ghost markings. After removal of markings on asphalt pavements, apply a fog seal c. Preparation of pavement markings prior to remarking. Prior to remarking existing markings, loose existing markings must be removed minimizing damage to the pavement surface, with a method approved by the RPR. After removal, the surface shall be cleaned of all residue or debris.
Prior to the application of markings, the Contractor shall certify in writing that the surface is dry and free from dirt, grease, oil, laitance, or other foreign material that would prevent the bond of the paint to 211
Ukiah Municipal Airport Item P-620 Runway and Taxiway Marking Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
the pavement or existing markings. This certification along with a copy of the paint manufactures application and surface preparation requirements must be submitted to the RPR prior to the initial application of markings.
620-3.4 Layout of markings. The proposed markings shall be laid out in advance of the paint application. The locations of markings to receive glass beads shall be shown on the plans 620-3.5 Application. A period of 30 days shall elapse between placement of surface course or seal coat and application of the permanent paint markings. Paint shall be applied at the locations and to the dimensions and spacing shown on the plans. Paint shall not be applied until the layout and condition of the surface has been approved by the RPR.
The edges of the markings shall not vary from a straight line more than 1/2 inch in 50 feet, and marking dimensions and spacing shall be within the following tolerances:
Marking Dimensions and Spacing Tolerance
Dimension and Spacing Tolerance
36 inch or less ±1/2 inch
greater than 36 inch to 6 feet ±1 inch
greater than 6 feet to 60 feet ±2 inch
greater than 60 feet ±3 inch
with a marking machine at the rate shown in Table 1. The addition of thinner will not be permitted.
Glass beads shall be distributed upon the marked areas at the locations shown on the plans to receive glass beads immediately after application of the paint. A dispenser shall be furnished that is properly designed for attachment to the marking machine and suitable for dispensing glass beads. Glass beads shall be applied at the rate shown in Table 1. Glass beads shall not be applied to black paint or green paint. Glass beads shall adhere to the cured paint or all marking operations shall cease until corrections are made.
Different bead types shall not be mixed. Regular monitoring of glass bead embedment and distribution should be performed.
620-3.6 Application--preformed thermoplastic airport pavement markings. Preformed thermoplastic pavement markings not used.
620-3.7 Control strip. Prior to the full application of airfield markings, the Contractor shall prepare a control strip in the presence of the RPR. The Contractor shall demonstrate the surface preparation method and all striping equipment to be used on the project. The marking equipment must achieve the prescribed application rate of paint and population of glass beads (per Table 1) that are properly embedded and evenly distributed across the full width of the marking. Prior to acceptance of the control strip, markings must be evaluated during darkness to ensure a uniform appearance. 620-3.8 Retro-reflectance. Reflectance shall be measured with a portable retro-reflectometer meeting ASTM E1710 (or equivalent). A total of 6 reading shall be taken over a 6 square foot area with 3 readings taken from each direction. The average shall be equal to or above the minimum levels of all readings which are within 30% of each other.
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Ukiah Municipal Airport Item P-620 Runway and Taxiway Marking Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Minimum Retro-Reflectance Values
Material Retro-reflectance mcd/m2/lux
White Yellow Red
Initial Type III 600 300 N/A
Initial Thermoplastic 225 100 N/A
1 s will restore retro-reflectance
620-3.9 Protection and cleanup. After application of the markings, all markings shall be protected from damage until dry. All surfaces shall be protected from excess moisture and/or rain and from disfiguration by spatter, splashes, spillage, or drippings. The Contractor shall remove from the work area all debris, waste, loose reflective media, and by-products generated by the surface preparation and application operations to the satisfaction of the RPR. The Contractor shall dispose of these wastes in strict compliance with all applicable state, local, and federal environmental statutes and regulations.
METHOD OF MEASUREMENT
620-4.1a The quantity of surface preparation shall be measured by the number of square feet for each type of surface preparation specified in paragraph 620-3.3.
620-4.1b The quantity of markings shall be paid for shall be measured by the number of square feet of painting.
BASIS OF PAYMENT
620-5.1 This price shall be full compensation for furnishing all materials and for all labor, equipment, tools, and incidentals necessary to complete the item complete in place and accepted by the RPR in accordance with these specifications.
620-5.1a Payment for surface preparation shall be made at the contract price for the number of square feet for each type of surface preparation specified in paragraph 620-3.3. 620-5.1b Payment for markings shall be made at the contract price for the number of square feet of painting including reflective media where indicated.
Payment will be made under:
Item P-620-5.1a Surface Preparation - per square foot
Item P-620-5.1b.1 Runway and Taxiway Marking, White - per square foot Item P-620-5.1b.2 Runway and Taxiway Marking, Yellow - per square foot Item P-620-5.1b.3 Runway and Taxiway Marking, Black - per square foot 213
Ukiah Municipal Airport Item P-620 Runway and Taxiway Marking Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM D476 Standard Classification for Dry Pigmentary Titanium Dioxide Products ASTM D968 Standard Test Methods for Abrasion Resistance of Organic Coatings by Falling Abrasive
ASTM D1652 Standard Test Method for Epoxy Content of Epoxy Resins ASTM D2074 Standard Test Method for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method ASTM D2240 Standard Test Method for Rubber Property - Durometer Hardness ASTM D7585 Standard Practice for Evaluating Retroreflective Pavement Markings Using Portable Hand-Operated Instruments
ASTM E303 Standard Test Method for Measuring Surface Frictional Properties Using the British Pendulum Tester
ASTM E1710 Standard Test Method for Measurement of Retroreflective Pavement Marking Materials with CEN-Prescribed Geometry Using a Portable Retroreflectometer
ASTM E2302 Standard Test Method for Measurement of the Luminance Coefficient Under Diffuse Illumination of Pavement Marking Materials Using a Portable Reflectometer
ASTM G154 Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials
Code of Federal Regulations (CFR)
40 CFR Part 60, Appendix A-7, Method 24
Determination of volatile matter content, water content, density, volume solids, and weight solids of surface coatings
29 CFR Part 1910.1200 Hazard Communication
Federal Specifications (FED SPEC)
FED SPEC TT-B-1325D Beads (Glass Spheres) Retro-Reflective FED SPEC TT-P-1952F Paint, Traffic and Airfield Marking, Waterborne FED STD 595 Colors used in Government Procurement
Commercial Item Description
A-A-2886B Paint, Traffic, Solvent Based
Advisory Circulars (AC)
AC 150/5340-1 Standards for Airport Markings
AC 150/5320-12 Measurement, Construction, and Maintenance of Skid Resistant Airport Pavement Surfaces
END OF ITEM P-620
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Ukiah Municipal Airport Item P-620 Runway and Taxiway Marking Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Page Intentionally Blank
215
Ukiah Municipal Airport Item F-162 Chain-Link Fence
Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Item F-162 Chain-Link Fence
DESCRIPTION
162-1.1 This item shall consist of furnishing and erecting a chain-link fence in accordance with these specifications, the details shown on the plans, and in conformity with the lines and grades shown on the plans or established by the RPR.
MATERIALS
162-2.1 Fabric. The fabric shall be woven with a 9-gauge galvanized steel wire in a 2-inch mesh and shall meet the requirements of ASTM A392, Class 2.
162-2.2 Barbed wire. Barbed wire shall be 2-strand 12-1/2 gauge zinc-coated wire with 4-point barbs and shall conform to the requirements of ASTM A121, Class 3, Chain Link Fence Grade. 162-2.3 Posts, rails, and braces. Line posts, rails, and braces shall conform to the requirements of ASTM F1043 or ASTM F1083 as follows:
Galvanized tubular steel pipe shall conform to the requirements of Group IA, (Schedule 40) coatings conforming to Type A, or Group IC (High Strength Pipe), External coating Type B, and internal coating Type B or D.
Roll Formed Steel Shapes (C-Sections) shall conform to the requirements of Group IIA, and be galvanized in accordance with the requirements of ASTM F1043, Type A.
Hot-Rolled Shapes (H Beams) shall meet the requirements of Group III, and be galvanized in accordance with the requirements of ASTM F1043, Type A.
Posts, rails, and braces, with the exception of galvanized steel conforming to ASTM F1043 or ASTM F1083, Group 1A, Type A, shall demonstrate the ability to withstand testing in salt spray in accordance with ASTM B117 as follows:
External: 1,000 hours with a maximum of 5% red rust.
Internal: 650 hours with a maximum of 5% red rust.
The dimensions of the posts, rails, and braces shall be in accordance with Tables I through VI of Federal Specification RR-F-191/3.
162-2.4 Gates. Not used.
162-2.5 Wire ties and tension wires. Wire ties for use in conjunction with a given type of fabric shall be of the same material and coating weight identified with the fabric type. Tension wire shall be 7-gauge marcelled steel wire with the same coating as the fabric type and shall conform to ASTM A824.
All material shall conform to Federal Specification RR-F-191/4. 162-2.6 Miscellaneous fittings and hardware. Miscellaneous steel fittings and hardware for use with zinc-coated steel fabric shall be of commercial grade steel or better quality, wrought or cast as appropriate to the article, and sufficient in strength to provide a balanced design when used in conjunction with fabric posts, and wires of the quality specified herein. All steel fittings and hardware shall be protected with a zinc coating applied in conformance with ASTM A153. Barbed wire support arms shall withstand a load of 250 pounds (113 kg) applied vertically to the outermost end of the arm. 216
Ukiah Municipal Airport Item F-162 Chain-Link Fence
Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
162-2.7 Concrete. Concrete shall have a minimum 28-day compressive strength of 3000 psi (2670 kPa). 162-2.8 Marking. Each roll of fabric shall carry a tag showing the kind of base metal (steel, aluminum, or aluminum alloy number), kind of coating, the gauge of the wire, the length of fencing in the roll, and the name of the manufacturer. Posts, wire, and other fittings shall be identified as to manufacturer, kind of base metal (steel, aluminum, or aluminum alloy number), and kind of coating.
CONSTRUCTION METHODS
162-3.1 General. The fence shall be constructed in accordance with the details on the plans and as specified here using new materials. All work shall be performed in a workmanlike manner satisfactory to the RPR. The RPR shall establish and mark the property line or fence line for the work. The Contractor shall span the opening below the fence with barbed wire at all locations where it is not practical to conform the fence to the general contour of the ground surface because of natural or manmade features such as drainage ditches. The new fence shall be permanently tied to the terminals of existing fences as shown on the plans. The Contractor shall stake down the woven wire fence at several points between posts as shown on the plans.
The Contractor shall arrange the work so that construction of the new fence will immediately follow the removal of existing fences. The length of unfenced section at any time shall not exceed 300 feet (90 m).
The work shall progress in this manner and at the close of the working day the newly constructed fence shall be tied to the existing fence.
162-3.2 Clearing fence line. Clearing shall consist of the removal of all stumps, brush, rocks, trees, or other obstructions that will interfere with proper construction of the fence. Stumps within the cleared area of the fence shall be grubbed or excavated. The bottom of the fence shall be placed a uniform distance above ground, as specified in the plans. When shown on the plans or as directed by the RPR, the existing fences which interfere with the new fence location shall be removed by the Contractor as a part of the construction work unless such removal is listed as a separate item in the bid schedule. All holes remaining after post and stump removal shall be refilled with suitable soil, gravel, or other suitable material and compacted with tampers.
The cost of removing and disposing of the material shall not constitute a pay item and shall be considered incidental to fence construction.
162-3.3 Installing posts. All posts shall be set in concrete at the required dimension and depth and at the spacing shown on the plans.
The concrete shall be thoroughly compacted around the posts by tamping or vibrating and shall have a smooth finish slightly higher than the ground and sloped to drain away from the posts. All posts shall be set plumb and to the required grade and alignment. No materials shall be installed on the posts, nor shall the posts be disturbed in any manner within seven (7) days after the individual post footing is completed.
Should rock be encountered at a depth less than the planned footing depth, a hole 2 inches (50 mm) larger than the greatest dimension of the posts shall be drilled to a depth of 12 inches (300 mm). After the posts are set, the remainder of the drilled hole shall be filled with grout, composed of one part Portland cement and two parts mortar sand. Any remaining space above the rock shall be filled with concrete in the manner described above.
In lieu of drilling, the rock may be excavated to the required footing depth. No extra compensation shall be made for rock excavation.
162-3.4 Installing top rails. The top rail shall be continuous and shall pass through the post tops. The coupling used to join the top rail lengths shall allow for expansion. 217
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Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
162-3.5 Installing braces. Horizontal brace rails, with diagonal truss rods and turnbuckles, shall be installed at all terminal posts.
162-3.6 Installing fabric. The wire fabric shall be firmly attached to the posts and braced as shown on the plans. All wire shall be stretched taut and shall be installed to the required elevations. The fence shall generally follow the contour of the ground, with the bottom of the fence fabric no less than one inch (25 mm) or more than 4 inches (100 mm) from the ground surface. Grading shall be performed where necessary to provide a neat appearance.
At locations of small natural swales or drainage ditches and where it is not practical to have the fence conform to the general contour of the ground surface, longer posts may be used and multiple strands of barbed wire stretched to span the opening below the fence. The vertical clearance between strands of barbed wire shall be 6 inches (150 mm) or less.
162-3.7 Electrical grounds. Electrical grounds shall be constructed where a power line passes over the fence The ground shall be accomplished with a copper clad rod 8 feet (2.4 m) long and a minimum of 5/8 inches (16 mm) in diameter driven vertically until the top is 6 inches (150 mm) below the ground surface. A No. 6 solid copper conductor shall be clamped to the rod and to the fence in such a manner that each element of the fence is grounded. Installation of ground rods shall not constitute a pay item and shall be considered incidental to fence construction. The Contractor shall comply with FAA-STD-019, Lightning and Surge Protection, Grounding, Bonding and Shielding Requirements for Facilities and Electronic Equipment, paragraph 4.2.3.8, Lightning Protection for Fences and Gates, when fencing is adjacent to FAA facilities.
162-3.8 Cleaning up. The Contractor shall remove from the vicinity of the completed work all tools, buildings, equipment, etc., used during construction. All disturbed areas shall be seeded per T-901.
METHOD OF MEASUREMENT
162-4.1 No separate measurement for payment shall be made for Chain Link Fence. Chain Link Fence shall be considered necessary and incidental to the work of this Contract.
BASIS OF PAYMENT
162-5.1 No separate measurement for payment shall be made for Chain Link Fence. Chain Link Fence shall be considered necessary and incidental to the work of this Contract.
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM A121 Standard Specification for Metallic-Coated Carbon Steel Barbed Wire ASTM A153 Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
ASTM A392 Standard Specification for Zinc-Coated Steel Chain-Link Fence Fabric ASTM A491 Standard Specification for Aluminum-Coated Steel Chain-Link Fence Fabric
218
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ASTM A824 Standard Specification for Metallic-Coated Steel Marcelled Tension Wire for Use with Chain Link Fence
ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apparatus ASTM F668 Standard Specification for Polyvinyl Chloride (PVC), Polyolefin and other Organic Polymer Coated Steel Chain-Link Fence Fabric ASTM F1043 Standard Specification for Strength and Protective Coatings on Steel Industrial Fence Framework
ASTM F1083 Standard Specification for Pipe, Steel, Hot-Dipped Zinc-Coated (Galvanized) Welded, for Fence Structures
ASTM F1183 Standard Specification for Aluminum Alloy Chain Link Fence Fabric ASTM F1345 Standard Specification for Zinc 5% Aluminum-Mischmetal Alloy Coated Steel Chain-Link Fence Fabric
ASTM G152 Standard Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials
ASTM G153 Standard Practice for Operating Enclosed Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials
ASTM G154 Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials
ASTM G155 Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Nonmetallic Materials
Federal Specifications (FED SPEC)
FED SPEC RR-F-191/3 Fencing, Wire and Post, Metal (Chain-Link Fence Posts, Top Rails and Braces)
FED SPEC RR-F-191/4 Fencing, Wire and Post, Metal (Chain-Link Fence Accessories) FAA Standard
FAA-STD-019 Lightning and Surge Protection, Grounding, Bonding and Shielding Requirements for Facilities and Electronic Equipment
FAA Orders
5300.38 AIP Handbook
END OF ITEM F-162
219
Errata 150-5370-10H, 2/15/19
Ukiah Municipal Airport Item T-901 Seeding
Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Item T-901 Seeding
DESCRIPTION
901-1.1 This item shall consist of soil preparation and seeding the areas shown on the plans or as directed by the RPR in accordance with these specifications.
MATERIALS
901-2.1 Seed. The species and application rates of grass, legume, and cover-crop seed furnished shall be those stipulated herein. Seed shall conform to the requirements of Federal Specification JJJ-S-181, Federal Specification, Seeds, Agricultural.
Seed shall be furnished separately or in mixtures in standard containers labeled in conformance with the Agricultural Marketing Service (AMS) Seed Act and applicable state seed laws with the seed name, lot number, net weight, percentages of purity and of germination and hard seed, and percentage of maximum weed seed content clearly marked for each kind of seed. The Contractor shall furnish the RPR duplicate signed copies of a statement by the vendor certifying that each lot of seed has been tested by a recognized laboratory for seed testing within six (6) months of date of delivery. This statement shall include: name and address of laboratory, date of test, lot number for each kind of seed, and the results of tests as to name, percentages of purity and of germination, and percentage of weed content for each kind of seed furnished, and, in case of a mixture, the proportions of each kind of seed. Wet, moldy, or otherwise damaged seed will be rejected.
Seeds shall be applied as follows:
Seed
(Scientific) Seed (Common) Minimum SeedPurity (Percent) Minimum
Germination
(Percent)
Rate of
Application
lb/acre
Melica
californica
California
melicgrass 98 90 10
Elymus glaucus Blue Wildrye 98 90 12
Hordeum
brachyantherum
Meadow Barley 98 90 18
Festuca rubra Red (molate)
Fescue 98 90 20
Seeding shall be performed during the period between October 1 and November 15 inclusive, unless otherwise approved by the RPR.
901-2.2 Lime. Not required.
901-2.3 Fertilizer. Not required.
901-2.4 Soil for repairs. The soil for fill and topsoiling of areas to be repaired shall be at least of equal quality to that which exists in areas adjacent to the area to be repaired. The soil shall be relatively free from large stones, roots, stumps, or other materials that will interfere with subsequent sowing of seed, compacting, and establishing turf, and shall be approved by the RPR before being placed. 220
Errata 150-5370-10H, 2/15/19
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Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
CONSTRUCTION METHODS
901-3.1 Advance preparation and cleanup. After grading of areas has been completed and before applying fertilizer and ground limestone, areas to be seeded shall be raked or otherwise cleared of stones larger than 2 inches (50 mm) in any diameter, sticks, stumps, and other debris that might interfere with sowing of seed, growth of grasses, or subsequent maintenance of grass-covered areas. If any damage by erosion or other causes has occurred after the completion of grading and before beginning the application of fertilizer and ground limestone, the Contractor shall repair such damage include filling gullies, smoothing irregularities, and repairing other incidental damage.
An area to be seeded shall be considered a satisfactory seedbed without additional treatment if it has recently been thoroughly loosened and worked to a depth of not less than 5 inches (125 mm) as a result of grading operations and, if immediately prior to seeding, the top 3 inches (75 mm) of soil is loose, friable, reasonably free from large clods, rocks, large roots, or other undesirable matter, and if shaped to the required grade.
When the area to be seeded is sparsely sodded, weedy, barren and unworked, or packed and hard, any grass and weeds shall first be cut or otherwise satisfactorily disposed of, and the soil then scarified or otherwise loosened to a depth not less than 5 inches (125 mm). Clods shall be broken and the top 3 inches (75 mm) of soil shall be worked into a satisfactory seedbed by discing, or by use of cultipackers, rollers, drags, harrows, or other appropriate means.
901-3.2 Dry application method.
a. Seeding. Grass seed shall be sown at the rate specified in paragraph 901-2.1 immediately after fertilizing. The fertilizer and seed shall be raked within the depth range stated in the special provisions.
Seeds of legumes, either alone or in mixtures, shall be inoculated before mixing or sowing, in accordance with the instructions of the manufacturer of the inoculant. When seeding is required at other than the seasons shown on the plans or in the special provisions, a cover crop shall be sown by the same methods required for grass and legume seeding.
b. Rolling. After the seed has been properly covered, the seedbed shall be immediately compacted by means of an approved lawn roller, weighing 40 to 65 pounds per foot (60 to 97 kg per meter) of width for clay soil (or any soil having a tendency to pack), and weighing 150 to 200 pounds per foot (223 to 298 kg per meter) of width for sandy or light soils.
901-3.3 Wet application method.
a. General. The Contractor may elect to apply seed and fertilizer (and lime, if required) by spraying them on the previously prepared seedbed in the form of an aqueous mixture and by using the methods and equipment described herein. The rates of application shall be as specified in the special provisions. b. Spraying equipment. The spraying equipment shall have a container or water tank equipped with a liquid level gauge calibrated to read in increments not larger than 50 gallons (190 liters) over the entire range of the tank capacity, mounted so as to be visible to the nozzle operator. The container or tank shall also be equipped with a mechanical power-driven agitator capable of keeping all the solids in the mixture in complete suspension at all times until used.
The unit shall also be equipped with a pressure pump capable of delivering 100 gallons (380 liters) per minute at a pressure of 100 lb / sq inches. The pump shall be mounted in a line that will recirculate the mixture through the tank whenever it is not being sprayed from the nozzle. All pump passages and pipe lines shall be capable of providing clearance for 5/8 inch solids. The power unit for the pump and agitator shall have controls mounted so as to be accessible to the nozzle operator. There shall be an indicating pressure gauge connected and mounted immediately at the back of the nozzle.
The nozzle pipe shall be mounted on an elevated supporting stand in such a manner that it can be rotated through 360 degrees horizontally and inclined vertically from at least 20 degrees below to at least 221
Errata 150-5370-10H, 2/15/19
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Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
60 degrees above the horizontal. There shall be a quick-acting, three-way control valve connecting the recirculating line to the nozzle pipe and mounted so that the nozzle operator can control and regulate the amount of flow of mixture delivered to the nozzle. At least three different types of nozzles shall be supplied so that mixtures may be properly sprayed over distance varying from 20 to 100 feet. One shall be a close-range ribbon nozzle, one a medium-range ribbon nozzle, and one a long-range jet nozzle. For case of removal and cleaning, all nozzles shall be connected to the nozzle pipe by means of quick-release couplings.
In order to reach areas inaccessible to the regular equipment, an extension hose at least 50 feet in length shall be provided to which the nozzles may be connected. c. Mixtures. Lime, if required, shall be applied separately, in the quantity specified, prior to the fertilizing and seeding operations. Not more than 220 pounds of lime shall be added to and mixed with each 100 gallons of water. Seed and fertilizer shall be mixed together in the relative proportions specified, but not more than a total of 220 pounds of these combined solids shall be added to and mixed with each 100 gallons of water.
All water used shall be obtained from fresh water sources and shall be free from injurious chemicals and other toxic substances harmful to plant life. The Contractor shall identify to the RPR all sources of water at least two (2) weeks prior to use. The RPR may take samples of the water at the source or from the tank at any time and have a laboratory test the samples for chemical and saline content. The Contractor shall not use any water from any source that is disapproved by the RPR following such tests.
All mixtures shall be constantly agitated from the time they are mixed until they are finally applied to the seedbed. All such mixtures shall be used within two (2) hours from the time they were mixed, or they shall be wasted and disposed of at approved locations.
d. Spraying. Lime, if required, shall be sprayed only upon previously prepared seedbeds. After the applied lime mixture has dried, the lime shall be worked into the top 3 inches, after which the seedbed shall again be properly graded and dressed to a smooth finish.
Mixtures of seed and fertilizer shall only be sprayed upon previously prepared seedbeds on which the lime, if required, shall already have been worked in. The mixtures shall be applied by means of a highpressure spray that shall always be directed upward into the air so that the mixtures will fall to the ground like rain in a uniform spray. Nozzles or sprays shall never be directed toward the ground in such a manner as might produce erosion or runoff.
Particular care shall be exercised to ensure that the application is made uniformly and at the prescribed rate and to guard against misses and overlapped areas. Proper predetermined quantities of the mixture in accordance with specifications shall be used to cover specified sections of known area.
Checks on the rate and uniformity of application may be made by observing the degree of wetting of the ground or by distributing test sheets of paper or pans over the area at intervals and observing the quantity of material deposited thereon.
On surfaces that are to be mulched as indicated by the plans or designated by the RPR, seed and fertilizer applied by the spray method need not be raked into the soil or rolled. However, on surfaces on which mulch is not to be used, the raking and rolling operations will be required after the soil has dried. 901-3.4 Maintenance of seeded areas. The Contractor shall protect seeded areas against traffic or other use by warning signs or barricades, as approved by the RPR. Surfaces gullied or otherwise damaged following seeding shall be repaired by regrading and reseeding as directed. The Contractor shall mow, water as directed, and otherwise maintain seeded areas in a satisfactory condition until final inspection and acceptance of the work.
When either the dry or wet application method outlined above is used for work done out of season, it will be required that the Contractor establish a good stand of grass of uniform color and density to the 222
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Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
satisfaction of the RPR. A grass stand shall be considered adequate when bare spots are one square foot or less, randomly dispersed, and do not exceed 3% of the area seeded.
METHOD OF MEASUREMENT
901-4.1 No separate measurement for payment shall be made for Seeding. Seeding shall be considered necessary and incidental to the work of this Contract.
BASIS OF PAYMENT
901-5.1 No separate payment shall be made for Seeding. Seeding shall be considered necessary and incidental to the work of this Contract .
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM C602 Standard Specification for Agricultural Liming Materials Federal Specifications (FED SPEC)
FED SPEC JJJ-S-181, Federal Specification, Seeds, Agricultural Advisory Circulars (AC)
AC 150/5200-33 Hazardous Wildlife Attractants on or Near Airports FAA/United States Department of Agriculture
Wildlife Hazard Management at Airports, A Manual for Airport Personnel END OF ITEM T-901
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Item L-108 Underground Power Cable for Airports
DESCRIPTION
108-1.1 This item shall consist of furnishing and installing power cables that are direct buried and furnishing and/or installing power cables within conduit or duct banks per these specifications at the locations shown on the plans. It includes excavation and backfill of trench for direct-buried cables only.
Also included are the installation of counterpoise wires, ground wires, ground rods and connections, cable splicing, cable marking, cable testing, and all incidentals necessary to place the cable in operating condition as a completed unit to the satisfaction of the RPR. This item shall not include the installation of duct banks or conduit, trenching and backfilling for duct banks or conduit, or furnishing or installation of cable for FAA owned/operated facilities.
EQUIPMENT AND MATERIALS
108-2.1 General.
a. Airport lighting equipment and materials covered by advisory circulars (AC) shall be approved under the Airport Lighting Equipment Certification Program per AC 150/5345-53, current version. b. All other equipment and materials covered by other referenced specifications shall be subject to requested by the RPR.
c. ve the Contractor of the responsibility to provide
materials per these specifications. Materials supplied and/or installed that do not comply with these specifications shall be removed (when directed by the RPR) and replaced with materials that comply with d. All materials and equipment used to construct this item shall be submitted to the RPR for approval prior to ordering the equipment. Submittals consisting of marked catalog sheets or shop drawings shall be provided. Submittal data shall be presented in a clear, precise and thorough manner. Original catalog sheets are preferred. Photocopies are acceptable provided they are as good a quality as the original.
Clearly and boldly mark each copy to identify products or models applicable to this project. Indicate all optional equipment and delete any non-pertinent data. Submittals for components of electrical equipment and systems shall identify the equipment to which they apply on each submittal sheet. Markings shall be made bold and clear with arrows or circles (highlighting is not acceptable). The Contractor is solely responsible for delays in the project that may accrue directly or indirectly from late submissions or resubmissions of submittals.
e. The data submitted shall be sufficient, in the opinion of the RPR, to determine compliance with the plans and specifications. electronically submitted in pdf format. The RPR reserves the right to reject any and all equipment, materials, or procedures that do not meet the system design and the standards and codes, specified in this document. f. All equipment and materials furnished and installed under this section shall be guaranteed against defects in materials and workmanship for at least twelve (12) months from the date of final acceptance by the Owner. The defective materials and/or
discretion, with no additional cost to the Owner. The Contractor shall maintain a minimum insulation resistance in accordance with paragraph 108-3.10e with isolation transformers connected in new circuits and new segments of existing circuits through the end of the contract warranty period when tested in accordance with AC 150/5340-26, Maintenance Airport Visual Aid Facilities, paragraph 5.1.3.1, Insulation Resistance Test.
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108-2.2 Cable. Underground cable for airfield lighting facilities (runway and taxiway lights and signs) shall conform to the requirements of AC 150/5345-7, Specification for L-824 Underground Electrical Cable for Airport Lighting Circuits latest edition. Conductors for use on 6.6 ampere primary airfield lighting series circuits shall be single conductor, seven strand, #8 American wire gauge (AWG), L-824 Type C, 5,000 volts, non-shielded, with cross-linked polyethylene insulation. Conductors for use on 20 ampere primary airfield lighting series circuits shall be single conductor, seven strand, #6 AWG, L-824 Type C, 5,000 volts, non-shielded, with cross-linked polyethylene insulation. L-824 conductors for use on the L-830 secondary of airfield lighting series circuits shall be sized in accordance with the man National Electric
Code (NEC) requirements. Conductor sizes noted above shall not apply to leads furnished by manufacturers on airfield lighting transformers and fixtures.
Wire for electrical circuits up to 600 volts shall comply with Specification L-824 and/or Commercial Item Description A-A-59544A and shall be type THWN-2, 75°C for installation in conduit and RHW-2, 75°C for direct burial installations. Conductors for parallel (voltage) circuits shall be type and size and installed in accordance with NFPA-70, National Electrical Code.
Unless noted otherwise, all 600-volt and less non-airfield lighting conductor sizes are based on a 75°C, THWN-2, 600-volt insulation, copper conductors, not more than three single insulated conductors, in raceway, in free air. The conduit/duct sizes are based on the use of THWN-2, 600-volt insulated conductors. The Contractor shall make the necessary increase in conduit/duct sizes for other types of wire insulation. In no case shall the conduit/duct size be reduced. The minimum power circuit wire size shall be #12 AWG.
Conductor sizes may have been adjusted due to voltage drop or other engineering considerations.
Equipment provided by the Contractor shall be capable of accepting the quantity and sizes of conductors shown in the Contract Documents. All conductors, pigtails, cable step-down adapters, cable step-up adapters, terminal blocks and splicing materials necessary to complete the cable termination/splice shall be considered incidental to the respective pay items provided.
Cable type, size, number of conductors, strand and service voltage shall be as specified in the Contract Document.
108-2.3 Bare copper wire (counterpoise, bare copper wire ground and ground rods). Wire for counterpoise or ground installations for airfield lighting systems shall be No. 6 AWG bare solid copper wire for counterpoise and/or No. 6 AWG insulated stranded for grounding bond wire per ASTM B3 and ASTM B8, and shall be bare copper wire. For voltage powered circuits, the equipment grounding conductor shall comply with NEC Article 250.
Ground rods shall be copper-clad steel or sectional copper-clad steel. The ground rods shall be of the length and diameter specified on the plans, but in no case be less than 10 feet (2.54 m) long and 3/4 inch (19 mm) in diameter.
108-2.4 Cable connections. In-line connections or splices of underground primary cables shall be of the type called for on the plans, and shall be one of the types listed below. No separate payment will be made for cable connections.
a. The cast splice. For 600V circuits only. A cast splice, employing a plastic mold and using epoxy resin equivalent to that manufactured by 3MTM -B, or an approved equivalent, used for potting the splice is acceptable.
b. The field-attached plug-in splice. Field attached plug-in splices shall be installed as shown on the plans. The Contractor shall determine the outside diameter of the cable to be spliced and furnish appropriately sized connector kits and/or adapters. Tape or heat shrink tubing with integral sealant shall 225
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Amerace, "Super Kit", Integro "Complete Kit", or approved equal is acceptable. c. The factory-molded plug-in splice. Specification for L-823 Connectors, Factory-Molded to Individual Conductors, is acceptable.
d. The taped or heat-shrink splice. Not used this project.
In all the above cases, connections of cable conductors shall be made using crimp connectors using a crimping tool designed to make a complete crimp before the tool can be removed. All L-823/L-824 All connections of counterpoise, grounding conductors and ground rods shall be made by the exothermic process or approved equivalent, except that a light base ground clamp connector shall be used for recommendations and listings.
108-2.5 Splicer qualifications. Every airfield lighting cable splicer shall be qualified in making airport cable splices and terminations on cables rated at or above 5,000 volts AC. The Contractor shall submit to the RPR proof of the qualifications of each proposed cable splicer for the airport cable type and voltage level to be worked on. Cable splicing/terminating personnel shall have a minimum of three (3) years continuous experience in terminating/splicing medium voltage cable. 108-2.6 Concrete. Concrete shall be proportioned, placed, and cured per state department of transportation structural concrete with minimum 25% Type F fly ash, and a minimum allowable compressive strength of 4,000 psi (28 MPa).
108-2.7 Flowable backfill. Flowable material used to backfill trenches for power cable trenches shall conform to the requirements of Item P-153, Controlled Low Strength Material. 108-2.8 Cable identification tags. Cable identification tags shall be made from a non-corrosive material with the circuit identification stamped or etched onto the tag. The tags shall be of the type as detailed on the plans.
108-2.9 Tape. Electrical tapes shall be ScotchTM Electrical Tapes ScotchTM 88 (1-1/2 inch (38 mm) wide) and ScotchTM 130C®linerless rubber splicing tape (2-inch (50 mm) wide), as manufactured by the Minnesota Mining and Manufacturing Company (3MTM), or an approved equivalent. 108-2.10 Electrical coating. TM, or an
approved equivalent.
108-2.11 Existing circuits. Whenever the scope of work requires connection to an existing circuit, the performed per this item and prior to any activity that will affect the respective circuit. The Contractor shall record the results on forms acceptable to the RPR. When the work affecting the circuit is complete, record the results on forms acceptable to the RPR. The second reading shall be equal to or greater than the first reading or the Contractor shall make the necessary repairs to the existing circuit to bring the second reading above the first reading. All repair costs including a complete replacement of the L-823 connectors, L-830 transformers and L-824 cable, if necessary, shall be borne by the Contractor. All test results shall be submitted in the Operation and Maintenance (O&M) Manual. 108-2.12 Detectable warning tape. Plastic, detectable, American Public Works Association (APWA) Red (electrical power lines, cables, conduit and lighting cable) with continuous legend tape shall be polyethylene film with a metalized foil core and shall be 3-6 inches (75-150 mm) wide. Detectable tape is incidental to the respective bid item. Detectable warning tape for communication cables shall be orange.
Detectable warning tape color code shall comply with the APWA Uniform Color Code. 226
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CONSTRUCTION METHODS
108-3.1 General. The Contractor shall install the specified cable at the approximate locations indicated on the plans. Unless otherwise shown on the plans, all cable required to cross under pavements expected to carry aircraft loads shall be installed in concrete encased duct banks. Cable shall be run without splices, from fixture to fixture.
Cable connections between lights will be permitted only at the light locations for connecting the underground cable to the primary leads of the individual isolation transformers. The Contractor shall be responsible for providing cable in continuous lengths for home runs or other long cable runs without connections unless otherwise authorized in writing by the RPR or shown on the plans.
In addition to connectors being installed at individual isolation transformers, L-823 cable connectors for maintenance and test points shall be installed at locations shown on the plans. Cable circuit identification markers shall be installed on both sides of the L-823 connectors installed and on both sides of slack loops where a future connector would be installed.
Provide not less than 3 feet (1 m) of cable slack on each side of all connections, isolation transformers, light units, and at points where cable is connected to field equipment. Where provisions must be made for testing or for future above grade connections, provide enough slack to allow the cable to be extended at least one foot (30 cm) vertically above the top of the access structure. This requirement also applies where primary cable passes through empty light bases, junction boxes, and access structures to allow for future connections, or as designated by the RPR.
Primary airfield lighting cables installed shall have cable circuit identification markers attached on both sides of each L-823 connector and on each airport lighting cable entering or leaving cable access points, such as manholes, hand holes, pull boxes, junction boxes, etc. Markers shall be of sufficient length for imprinting the cable circuit identification legend on one line, using letters not less than 1/4 inch (6 mm) in size. The cable circuit identification shall match the circuits noted on the construction plans. 108-3.2 Installation in duct banks or conduits. This item includes the installation of the cable in duct banks or conduit per the following paragraphs. The maximum number and voltage ratings of cables installed in each single duct or conduit, and the current-carrying capacity of each cable shall be per the latest version of the National Electric Code, or the code of the local agency or authority having jurisdiction.
The Contractor shall make no connections or splices of any kind in cables installed in conduits or duct banks.
Unless otherwise designated in the plans, where ducts are in tiers, use the lowest ducts to receive the cable first, with spare ducts left in the upper levels. Check duct routes prior to construction to obtain assurance that the shortest routes are selected and that any potential interference is avoided.
Duct banks or conduits shall be installed as a separate item per Item L-110, Airport Underground Electrical Duct Banks and Conduit. The Contractor shall run a mandrel through duct banks or conduit prior to installation of cable to ensure that the duct bank or conduit is open, continuous and clear of debris. The mandrel size shall be compatible with the conduit size. The Contractor shall swab out all conduits/ducts and clean light bases, manholes, etc., interiors immediately prior to pulling cable. Once cleaned and swabbed, the light bases and all accessible points of entry to the duct/conduit system shall be kept closed except when installing cables. Cleaning of ducts, light bases, manholes, etc., is incidental to the pay item of the item being cleaned. All raceway systems left open, after initial cleaning, for any reason shall be reproposed for use in this project as clear and open. The Contractor shall notify the RPR of any blockage in the existing ducts.
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The cable shall be installed in a manner that prevents harmful stretching of the conductor, damage to the insulation, or damage to the outer protective covering. The ends of all cables shall be sealed with moisture-seal tape providing moisture-tight mechanical protection with minimum bulk, or alternately, heat shrinkable tubing before pulling into the conduit and it shall be left sealed until connections are made. Where more than one cable is to be installed in a conduit, all cable shall be pulled in the conduit at the same time. The pulling of a cable through duct banks or conduits may be accomplished by hand winch or power winch with the use of cable grips or pulling eyes. Maximum pulling tensions shall not exceed -hardening cable-pulling lubricant recommended for
the type of cable being installed shall be used where required.
The Contractor shall submit the recommended pulling tension values to the RPR prior to any cable installation. If required by the RPR, pulling tension values for cable pulls shall be monitored by a dynamometer in the presence of the RPR. Cable pull tensions shall be recorded by the Contractor and reviewed by the RPR. Cables exceeding the maximum allowable pulling tension values shall be removed and repl
we
or may submit a plan, for review by the RPR, for
heated storage of the cable and maintenance of an acceptable cable temperature during installation when Cable shall not be dragged across base can or manhole edges, pavement or earth. When cable must be coiled, lay cable out on a canvas tarp or use other appropriate means to prevent abrasion to the cable jacket.
108-3.3 Installation of direct-buried cable in trenches. Not used this project. 108-3.4 Cable markers for direct-buried cable. Not used this project. 108-3.5 Splicing. Connections of the type shown on the plans shall be made by experienced personnel regularly engaged in this type of work and shall be made as follows:
a. Cast splices. For use on 600V circuits only. These shall be made by using crimp connectors for jointing conductors. Molds shall be assembled, and the compound shall be mixed and poured per the b. Field-attached plug-in splices.
These splices shall be made by plugging directly into mating connectors. The joint where the connectors come together shall be finished by the following methods: On connector kits equipped with water seal flap; roll-over water seal flap to sealing position on mating connector. Wrapped with at least one layer of rubber or synthetic rubber tape and one layer of plastic tape, one-half lapped, extending at least 2 inches on each side of the joint.
c. Factory-molded plug-in splices. These shall be made by plugging directly into mating connectors.
The joint where the connectors come together shall be finished by the following methods: On connector kits so equipped with water seal flap; roll-over water seal flap to sealing position on mating connector.
Wrapped with at least one layer of rubber or synthetic rubber tape and one layer of plastic tape, one-half lapped, extending at least 2 inches on each side of the joint. d. Taped or heat-shrink splices. Not used this project. e. Assembly. Surfaces of equipment or conductors being terminated or connected shall be prepared in accordance with industry standard practice
connected shall be thoroughly cleaned to remove all dirt, grease, oxides, nonconductive films, or other 228
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foreign material. Paints and other nonconductive coatings shall be removed to expose base metal. Clean all surfaces at least 1/4 inch (6.4 mm) beyond all sides of the larger bonded area on all mating surfaces.
Use a joint compound suitable for the materials used in the connection. Repair painted/coated surface to original condition after completing the connection.
108-3.6 Bare counterpoise wire installation for lightning protection and grounding. If shown on the plans or included in the job specifications, bare solid #6 AWG copper counterpoise wire shall be installed for lightning protection of the underground cables. The RPR shall select one of two methods of lightning protection for the airfield lighting circuit based upon sound engineering practice and lightning strike density.
a. Equipotential. The counterpoise size is as shown on the plans. The equipotential method is applicable to all airfield lighting systems; i.e. runway, taxiway, apron touchdown zone, centerline, edge, threshold and approach lighting systems. The equipotential method is also successfully applied to provide lightning protection for power, signal and communication systems. The light bases, counterpoise, etc. all components - are bonded together and bonded to the vault power system ground loop/electrode.
Counterpoise wire shall be installed in the same trench for the entire length of buried cable, conduits and duct banks that are installed to contain airfield cables. The counterpoise is centered over the cable/conduit/duct to be protected.
The counterpoise conductor shall be installed no less than 8 inches minimum or 12 inches maximum above the raceway or cable to be protected, except as permitted below:
(1) The minimum counterpoise conductor height above the raceway or cable to be protected shall be permitted to be adjusted subject to coordination with the airfield lighting and pavement designs. (2) The counterpoise conductor height above the protected raceway(s) or cable(s) shall be calculated to ensure that the raceway or cable is within a 45-degree area of protection, (45 degrees on each side of vertical creating a 90 degree angle).
The counterpoise conductor shall be bonded to each metallic light base, mounting stake, and metallic airfield lighting component.
All metallic airfield lighting components in the field circuit on the output side of the constant current regulator (CCR) or other power source shall be bonded to the airfield lighting counterpoise system.
All components rise and fall at the same potential; with no potential difference, no damaging arcing and no damaging current flow.
See AC 150/5340-30, Design and Installation Details for Airport Visual Aids and NFPA 780, Standard for the Installation of Lightning Protection Systems, Chapter 11, for a detailed description of the Equipotential Method of lightning protection.
Reference FAA STD-019E, Lightning and Surge Protection, Grounding Bonding and Shielding Requirements for Facilities and Electronic Equipment, Part 4.1.1.7 for FAA facilities. b. Isolation not used
c. Common Installation requirements. When a metallic light base is used, the grounding electrode shall be bonded to the metallic light base or mounting stake with a No. 6 AWG bare, annealed or soft drawn, solid copper conductor. Non-metallic base cans are not allowed.
Grounding electrodes may be rods, ground dissipation plates, radials, or other electrodes listed in the NFPA 70 (NEC) or NFPA 780.
Where raceway is installed by the directional bore, jack and bore, or other drilling method, the counterpoise conductor shall be permitted to be installed concurrently with the directional bore, jack and bore, or other approved drilling method raceway, external to the raceway or sleeve. 229
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The counterpoise wire shall also be exothermically welded to ground rods installed as shown on the plans but not more than 500 feet (150 m) apart around the entire circuit. The counterpoise system shall be continuous and terminate at the transformer vault or at the power source. It shall be securely attached to the vault or equipment external ground ring or other made electrode-grounding system. The connections shall be made as shown on the plans and in the specifications.
Where an existing airfield lighting system is being extended or modified, the new counterpoise conductors shall be interconnected to existing counterpoise conductors at each intersection of the new and existing airfield lighting counterpoise systems.
d. Parallel Voltage Systems. Provide grounding and bonding in accordance with NFPA 70, National Electrical Code.
108-3.7 Counterpoise installation above multiple conduits and duct banks. Counterpoise wires shall be installed above multiple conduits/duct banks for airfield lighting cables, with the intent being to provide a complete area of protection over the airfield lighting cables. When multiple conduits and/or duct banks for airfield cable are installed in the same trench, the number and location of counterpoise wires above the conduits shall be adequate to provide a complete area of protection measured 45 degrees each side of vertical.
Where duct banks pass under pavement to be constructed in the project, the counterpoise shall be placed above the duct bank. Reference details on the construction plans. 108-3.8 Counterpoise installation at existing duct banks. When airfield lighting cables are indicated on the plans to be routed through existing duct banks, the new counterpoise wiring shall be terminated at ground rods at each end of the existing duct bank where the cables being protected enter and exit the duct bank. The new counterpoise conductor shall be bonded to the existing counterpoise system. 108-3.9 Exothermic bonding. Bonding of counterpoise wire shall be by the exothermic welding process or equivalent method accepted by the RPR. Only personnel experienced in and regularly engaged in this type of work shall make these connections.
Contractor shall demonstrate to the satisfaction of the RPR, the welding kits, materials and procedures to be used for welded connections prior to any installations in the field. The installations shall comply with a. All slag shall be removed from welds.
b. Using an exothermic weld to bond the counterpoise to a lug on a galvanized light base is not directions for proper methods of bonding copper wire to the light base. See AC 150/5340-30 for galvanized light base exception.
c. If called for in the plans, all buried copper and weld material at weld connections shall be thoroughly coated with 6 mm of 3MTM ScotchkoteTM, or approved equivalent, or coated with coal tar Bitumastic® material to prevent surface exposure to corrosive soil or moisture. 108-3.10 Testing. The Contractor shall furnish all necessary equipment and appliances for testing the airport electrical systems and underground cable circuits before and after installation. The Contractor shall perform all tests in the presence of the RPR. The Contractor shall demonstrate the electrical characteristics to the satisfaction of the RPR. All costs for testing are incidental to the respective item being tested. For phased projects, the tests must be completed by phase. The Contractor must maintain the test results throughout the entire project as well as during the warranty period that meet the following:
a. Earth resistance testing methods shall be submitted to the RPR for approval. Earth resistance testing results shall be recorded on an approved form and testing shall be performed in the presence of the RPR. All such testing shall be at the sole expense of the Contractor. 230
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b. Should the counterpoise or ground grid conductors be damaged or suspected of being damaged by construction activities the Contractor shall test the conductors for continuity with a low resistance ohmmeter. The conductors shall be isolated such that no parallel path exists and tested for continuity. The RPR shall approve of the test method selected. All such testing shall be at the sole expense of the Contractor.
After installation, the Contractor shall test and demonstrate to the satisfaction of the RPR the following:
c. That all affected lighting power and control circuits (existing and new) are continuous and free from short circuits.
d. That all affected circuits (existing and new) are free from unspecified grounds. e. That the insulation resistance to ground of all new non-grounded high voltage series circuits or cable segments is not less than 500 megohms. Verify continuity of all series airfield lighting circuits prior to energization.
f. That the insulation resistance to ground of all new non-grounded conductors of new multiple circuits or circuit segments is not less than 500 megohms. g. That all affected circuits (existing and new) are properly connected per applicable wiring diagrams. h. That all affected circuits (existing and new) are operable. Tests shall be conducted that include operating each control not less than 10 times and the continuous operation of each lighting and power circuit for not less than 1/2 hour.
i. That the impedance to ground of each ground rod does not exceed 25 ohms prior to establishing connections to other ground electrodes. The fall-of-potential ground impedance test shall be used, as described by American National Standards Institute/Institute of Electrical and Electronic Engineers (ANSI/IEEE) Standard 81, to verify this requirement. As an alternate, clamp-on style ground impedance test meters may be used to satisfy the impedance testing requirement. Test equipment and its calibration sheets shall be submitted for review and approval by the RPR prior to performing the testing.
Two copies of tabulated results of all cable tests performed shall be supplied by the Contractor to the RPR. Where connecting new cable to existing cable, insulation resistance tests shall be performed on the new cable prior to connection to the existing circuit.
that have failed testing other than complete
replacement.
METHOD OF MEASUREMENT
108-4.1 Cable in duct bank or conduit shall be measured by the number of linear feet installed and grounding connectors, and trench marking tape ready for operation, and accepted as satisfactory. Separate measurement shall be made for each cable installed in duct bank or conduit. The measurement for this item shall not include additional quantities required for slack. Trenching shall be incidental. The cost of all excavation, backfill, dewatering and restoration regardless of the type of material encountered shall be included in the unit price bid for the work.
separate measurement or payment will be made for cable slack. 108-4.2 Counterpoise wire installed in trench, or above duct bank or conduit shall be measured by the number of linear feet installed and grounding connectors, and trench marking tape ready for operation, 231
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and accepted as satisfactory. Separate measurement shall be made for each counterpoise wire installed in trench, or above duct bank or conduit. The measurement for this item shall not include additional quantities required for slack. Trenching shall be incidental. The cost of all excavation, backfill, dewatering and restoration regardless of the type of material encountered shall be included in the unit price bid for the work.
Counterpoise slack is considered incidental to this item and is included in the Co price. No separate measurement or payment will be made for counterpoise slack. 108-4.3 No separate payment will be made for ground rods.
BASIS OF PAYMENT
108-5.1 Payment will be made at the contract unit price for trenching, cable and equipment ground installed in duct bank or conduit, in place by the Contractor and accepted by the RPR. This price shall be full compensation for furnishing all materials and for all preparation and installation of these materials, and for all labor, equipment, tools, and incidentals and trench marking tape, necessary to complete this item.
108-5.2 Payment will be made at the contract unit price for bare counterpoise wire installed in trench (direct-buried), in place by the Contractor and accepted by the RPR. This price shall be full compensation for furnishing all materials and for all preparation and installation of these materials, and for all labor, equipment, tools, and incidentals, including ground rods and ground connectors and trench marking tape, necessary to complete this item.
Payment will be made under:
Item L-108-5.1a No. 8 AWG, 5 kV, L-824, Type C Cable, Installed in Duct Bank or Conduit - per liner foot
Item L-108-5.1b No. 12 AWG, 600V, XHHW-2 or RHW-2, Installed in Duct Bank or Conduit per linear foot
Item L-108-5.1c No. 8 AWG, 600V, XHHW-2 or RHW-2, Installed in Duct Bank or Conduit per linear foot
Item L-108-5.1d No. 6 AWG, 600V, XHHW-2 or RHW-2, Insulated Ground, Installed in Duct Bank or Conduit per linear foot
Item L-108-5.1e 2PR No. 18 AWG, RS485, Installed in Duct Bank or Conduit per linear foot
Item L-108-5.1f 6PR Shielded No. 18 AWG PE-39, Installed in Duct Bank or Conduit per linear foot
Item L-108-5.1g No. 6 AWG, 600V, XHHW-2 or RHW-2, Installed in Duct Bank or Conduit per linear foot
Item L-108-5.1g No. 2 AWG, 600V, XHHW-2 or RHW-2, Installed in Duct Bank or Conduit per linear foot
232
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Ukiah Municipal Airport Item L-108 Underground Power Cable for Airports Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Item L-108-5.2a No. 6 AWG, Solid, Bare Copper Counterpoise Wire, Installed in Trench, Above the Duct Bank or Conduit, Including Connections/Terminations - per linear foot
Item L-108-5.2b No. 1/0 AWG, Solid, Bare Copper Guard Wire, Installed in Trench, Above the Duct Bank or Conduit, Including Connections/Terminations - per linear foot
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
Advisory Circulars (AC)
AC 150/5340-26 Maintenance of Airport Visual Aid Facilities AC 150/5340-30 Design and Installation Details for Airport Visual Aids AC 150/5345-7 Specification for L-824 Underground Electrical Cable for Airport Lighting Circuits
AC 150/5345-26 Specification for L-823 Plug and Receptacle, Cable Connectors AC 150/5345-53 Airport Lighting Equipment Certification Program Commercial Item Description
A-A-59544A Cable and Wire, Electrical (Power, Fixed Installation) A-A-55809 Insulation Tape, Electrical, Pressure-Sensitive Adhesive, Plastic ASTM International (ASTM)
ASTM B3 Standard Specification for Soft or Annealed Copper Wire ASTM B8 Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft
ASTM B33 Standard Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes
ASTM D4388 Standard Specification for Nonmetallic Semi-Conducting and Electrically Insulating Rubber Tapes
Mil Spec
MIL-PRF-23586F Performance Specification: Sealing Compound (with Accelerator), Silicone Rubber, Electrical
MIL-I-24391 Insulation Tape, Electrical, Plastic, Pressure Sensitive National Fire Protection Association (NFPA)
NFPA-70 National Electrical Code (NEC)
NFPA-780 Standard for the Installation of Lightning Protection Systems 233
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Ukiah Municipal Airport Item L-108 Underground Power Cable for Airports Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
American National Standards Institute (ANSI)/Institute of Electrical and Electronics Engineers (IEEE) ANSI/IEEE STD 81 IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System
Federal Aviation Administration Standard
FAA STD-019E Lightning and Surge Protection, Grounding Bonding and Shielding Requirements for Facilities and Electronic Equipment
END OF ITEM L-108
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Ukiah Municipal Airport Item L-108 Underground Power Cable for Airports Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Page Intentionally Blank
235
Ukiah Municipal Airport Item L-110 Airport Underground Electrical Duct Banks and Conduits Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019XX 100%
Item L-110 Airport Underground Electrical Duct Banks and Conduits
DESCRIPTION
110-1.1 This item shall consist of underground electrical conduits and duct banks (single or multiple conduits encased in concrete or buried in sand) installed per this specification at the locations and per the dimensions, designs, and details shown on the plans. This item shall include furnishing and installing of all underground electrical duct banks and individual and multiple underground conduits and removal of existing duct banks. It shall also include all turfing trenching, backfilling, removal, and restoration of any paved or turfed areas; concrete encasement, mandrelling, pulling lines, duct markers, plugging of conduits, and the testing of the installation as a completed system ready for installation of cables per the plans and specifications. This item shall also include furnishing and installing conduits and all incidentals for providing positive drainage of the system. Verification of existing ducts is incidental to the pay items provided in this specification.
EQUIPMENT AND MATERIALS
110-2.1 General.
a. All equipment and materials covered by referenced specifications shall be subject to acceptance the RPR.
b. lieve the Contractor of the responsibility to provide materials per these specifications and acceptable to the RPR. Materials supplied and/or installed that do not comply with these specifications shall be removed, when directed by the RPR and replaced with c. All materials and equipment used to construct this item shall be submitted to the RPR for approval prior to ordering the equipment. Submittals consisting of marked catalog sheets or shop drawings shall be provided. Submittal data shall be presented in a clear, precise and thorough manner. Original catalog sheets are preferred. Photocopies are acceptable provided they are as good a quality as the original.
Clearly and boldly mark each copy to identify products or models applicable to this project. Indicate all optional equipment and delete non-pertinent data. Submittals for components of electrical equipment and systems shall identify the equipment for which they apply on each submittal sheet. Markings shall be made bold and clear with arrows or circles (highlighting is not acceptable). The Contractor is solely responsible for delays in project that accrue directly or indirectly from late submissions or resubmissions of submittals.
d. The data submitted shall be sufficient, in the opinion of the RPR, to determine compliance with the plans and specifications. electronically submitted in pdf format, tabbed by specification section. The RPR reserves the right to reject any and all equipment, materials or procedures that do not meet the system design and the standards and codes specified in this document. e. All equipment and materials furnished and installed under this section shall be guaranteed against defects in materials and workmanship for a period of at least twelve (12) months from final acceptance by discretion, with no additional cost to the Owner.
110-2.2 Steel conduit. Rigid galvanized steel (RGS) conduit and fittings shall be hot dipped galvanized inside and out and conform to the requirements of Underwriters Laboratories Standards 6, 514B, and 1242. All RGS conduits or RGS elbows installed below grade, in concrete, permanently wet locations or 236
Ukiah Municipal Airport Item L-110 Airport Underground Electrical Duct Banks and Conduits Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019XX 100%
other similar environments shall be painted with a 10-mil thick coat of asphaltum sealer or shall have a factory-bonded polyvinyl chloride (PVC) cover. Any exposed galvanizing or steel shall be coated with 10 mils of asphaltum sealer. When using PVC coated RGS conduit, care shall be exercised not to damage the factory PVC coating. Damaged PVC coating shall be repaired per the manufacturer's written instructions. In lieu of PVC coated RGS, corrosion wrap tape shall be permitted to be used where RGS is 110-2.3 Plastic conduit. Plastic conduit and fittings-shall conform to the following requirements:
UL 514B covers W-C-1094-Conduit fittings all types, classes 1 thru 3 and 6 thru 10.
UL 514C covers W-C-1094- all types, Class 5 junction box and cover in plastic (PVC).
UL 651 covers W-C-1094-Rigid PVC Conduit, types I and II, Class 4.
UL 651A covers W-C-1094-Rigid PVC Conduit and high-density polyethylene (HDPE) Conduit type III and Class 4.
Underwriters Laboratories Standards UL-651 and Article 352 of the current National Electrical Code shall be one of the following, as shown on the plans:
a. Type I Schedule 40 and Schedule 80 PVC suitable for underground use either direct-buried or encased in concrete.
b. Type II Schedule 40 PVC suitable for either above ground or underground use. c. Type III Schedule 80 PVC suitable for either above ground or underground use either directburied or encased in concrete. d. Type III HDPE pipe, minimum standard dimensional ratio (SDR) 11, suitable for placement with directional boring under pavement.
The type of solvent cement shall be as recommended by the conduit/fitting manufacturer. 110-2.4 Split conduit. Split conduit shall be pre-manufactured for the intended purpose and shall be made of steel or plastic.
110-2.5 Conduit spacers. Conduit spacers shall be prefabricated interlocking units manufactured for the intended purpose. They shall be of double wall construction made of high grade, high density polyethylene complete with interlocking cap and base pads. They shall be designed to accept No. 4 reinforcing bars installed vertically.
110-2.6 Concrete. Concrete shall be proportioned, placed, and cured per state department of transportation structural concrete with minimum 25% Type F fly ash, and a minimum allowable compressive strength of 4,000 psi (28 MPa).
110-2.7 Precast concrete structures. Precast concrete structures shall be furnished by a plant meeting National Precast Concrete Association Plant Certification Program or another RPR approved third party certification program. Precast concrete structures shall conform to ASTM C478. 110-2.8 Flowable backfill. Flowable material used to back fill conduit and duct bank trenches shall conform to the requirements of Item P-153, Controlled Low Strength Material. 110-2.9 Detectable warning tape. Plastic, detectable, American Public Works Association (APWA) red (electrical power lines, cables, conduit and lighting cable), orange (telephone/fiber optic cabling) with continuous legend magnetic tape shall be polyethylene film with a metallized foil core and shall be 3-6 inches (75-150 mm) wide. Detectable tape is incidental to the respective bid item. 237
Ukiah Municipal Airport Item L-110 Airport Underground Electrical Duct Banks and Conduits Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019XX 100%
CONSTRUCTION METHODS
110-3.1 General. The Contractor shall install underground duct banks and conduits at the approximate locations indicated on the plans. The RPR shall indicate specific locations as the work progresses, if required to differ from the plans. Duct banks and conduits shall be of the size, material, and type indicated on the plans or specifications. Where no size is indicated on the plans or in the specifications, conduits shall be not less than 2 inches (50 mm) inside diameter or comply with the National Electrical Code based on cable to be installed, whichever is larger. All duct bank and conduit lines shall be laid so as to grade toward access points and duct or conduit ends for drainage. Unless shown otherwise on the plans, grades shall be at least 3 inches (75 mm) per 100 feet (30 m). On runs where it is not practicable to maintain the grade all one way, the duct bank and conduit lines shall be graded from the center in both directions toward access points or conduit ends, with a drain into the storm drainage system. Pockets or traps where moisture may accumulate shall be avoided. Under pavement, the top of the duct bank shall not be less than 18 inches (0.5 m) below the subgrade; in other locations, the top of the duct bank or underground conduit shall be not less than 18 inches (0.5 m) below finished grade.
The Contractor shall mandrel each individual conduit whether the conduit is direct-buried or part of a duct bank. An iron-shod mandrel, not more than 1/4 inch (6 mm) smaller than the bore of the conduit shall be pulled or pushed through each conduit. The mandrel shall have a leather or rubber gasket slightly larger than the conduit hole.
The Contractor shall swab out all conduits/ducts and clean base can, manhole, pull boxes, etc., interiors immediately prior to pulling cable. Once cleaned and swabbed the light bases, manholes, pull boxes, etc., and all accessible points of entry to the duct/conduit system shall be kept closed except when installing cables. Cleaning of ducts, base cans, manholes, etc., is incidental to the pay item of the item being cleaned. All raceway systems left open, after initial cleaning, for any reason shall be recleaned at the shall verify existing ducts proposed for use in this project as clear and open. The Contractor shall notify the RPR of any blockage in the existing ducts.
For pulling the permanent wiring, each individual conduit, whether the conduit is direct-buried or part of a duct bank, shall be provided with a 200-pound (90 kg) test polypropylene pull rope. The ends shall be secured and sufficient length shall be left in access points to prevent it from slipping back into the conduit. Where spare conduits are installed, as indicated on the plans, the open ends shall be plugged with removable tapered plugs, designed for this purpose.
All conduits shall be securely fastened in place during construction and shall be plugged to prevent contaminants from entering the conduits. Any conduit section having a defective joint shall not be installed. Ducts shall be supported and spaced apart using approved spacers at intervals not to exceed 5 feet (1.5 m).
Unless otherwise shown on the plans, concrete encased duct banks shall be used when crossing under pavements expected to carry aircraft loads, such as runways, taxiways, taxilanes, ramps and aprons. When under paved shoulders and other paved areas, conduit and duct banks shall be encased using flowable fill for protection.
All conduits within concrete encasement of the duct banks shall terminate with female ends for ease in current and future use. Install factory plugs in all unused ends. Do not cover the ends or plugs with concrete.
Where turf is well established and the sod can be removed, it shall be carefully stripped and properly stored.
Trenches for conduits and duct banks may be excavated manually or with mechanical trenching equipment unless in pavement, in which case they shall be excavated with mechanical trenching 238
Ukiah Municipal Airport Item L-110 Airport Underground Electrical Duct Banks and Conduits Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019XX 100%
equipment. Walls of trenches shall be essentially vertical so that a minimum of shoulder surface is disturbed. Blades of graders shall not be used to excavate the trench.
When rock is encountered, the rock shall be removed to a depth of at least 3 inches (75 mm) below the required conduit or duct bank depth and it shall be replaced with bedding material of earth or sand containing no mineral aggregate particles that would be retained on a 1/4-inch (6.3 mm) sieve. Flowable backfill may alternatively be used
Underground electrical warning (Caution) tape shall be installed in the trench above all underground duct banks and conduits in unpaved areas. Contractor shall submit a sample of the proposed warning tape for approval by the RPR. If not shown on the plans, the warning tape shall be located 6 inches above the duct/conduit or the counterpoise wire if present.
s for the particular type
of conduit. Plastic conduit shall be prepared by application of a plastic cleaner and brushing a plastic solvent on the outside of the conduit ends and on the inside of the couplings. The conduit fitting shall then be slipped together with a quick one-quarter turn twist to set the joint tightly. Where more than one conduit is placed in a single trench, or in duct banks, joints in the conduit shall be staggered a minimum of 2 feet (60 cm).
Changes in direction of runs exceeding 10 degrees, either vertical or horizontal, shall be accomplished using manufactured sweep bends.
Whether or not specifically indicated on the drawings, where the soil encountered at established duct bank grade is an unsuitable material, as determined by the RPR, the unsuitable material shall be removed per Item P-152 and replaced with suitable material. Additional duct bank supports shall be installed, as approved by the RPR.
All excavation shall be unclassified and shall be considered incidental to Item L-110. Dewatering necessary for duct installation, and erosion per federal, state, and local requirements is incidental to Item L-110.
Unless otherwise specified, excavated materials that are deemed by the RPR to be unsuitable for use in backfill or embankments shall be removed and disposed of offsite.
Any excess excavation shall be filled with suitable material approved by the RPR and compacted per Item P-152.
vation.
Where existing active cables) cross proposed installations, the Contractor shall ensure that these cables are adequately protected. Where crossings are unavoidable, no splices will be allowed in the existing cables, except as specified on the plans. Installation of new cable where such crossings must occur shall proceed as follows:
a. Existing cables shall be located manually. Unearthed cables shall be inspected to assure absolutely no damage has occurred
b. Trenching, etc., in cable areas shall then proceed with approval of the RPR, with care taken to minimize possible damage or disruption of existing cable, including careful backfilling in area of cable.
In the event that any previously identified cable is damaged during the course of construction, the Contractor shall be responsible for the complete repair. 110-3.2 Duct banks. Unless otherwise shown in the plans, duct banks shall be installed so that the top of the concrete envelope is not less than 18 inches (0.5 m) below the bottom of the base or stabilized base course layers where installed under runways, taxiways, aprons, or other paved areas, and not less than 18 inches (0.5 m) below finished grade where installed in unpaved areas. 239
Ukiah Municipal Airport Item L-110 Airport Underground Electrical Duct Banks and Conduits Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019XX 100%
Unless otherwise shown on the plans, duct banks under paved areas shall extend at least 3 feet (1 m) beyond the edges of the pavement or 3 feet (1 m) beyond any under drains that may be installed alongside the paved area. Trenches for duct banks shall be opened the complete length before concrete is placed so that if any obstructions are encountered, provisions can be made to avoid them. Unless otherwise shown on the plans, all duct banks shall be placed on a layer of concrete not less than 3 inches (75 mm) thick prior to its initial set. The Contractor shall space the conduits not less than 3 inches (75 mm) apart (measured from outside wall to outside wall). All such multiple conduits shall be placed using conduit spacers applicable to the type of conduit. As the conduit laying progresses, concrete shall be placed around and on top of the conduits not less than 3 inches (75 mm) thick unless otherwise shown on the plans. All conduits shall terminate with female ends for ease of access in current and future use. Install factory plugs in all unused ends. Do not cover the ends or plugs with concrete.
Conduits forming the duct bank shall be installed using conduit spacers. No. 4 reinforcing bars shall be driven vertically into the soil a minimum of 6 inches (150 mm) to anchor the assembly into the earth prior to placing the concrete encasement. For this purpose, the spacers shall be fastened down with locking collars attached to the vertical bars. Spacers shall be installed at 5-foot (1.5-m) intervals. Spacers shall be in the proper sizes and configurations to fit the conduits. Locking collars and spacers shall be submitted to the RPR for review prior to use.
When specified, the Contractor shall reinforce the bottom side and top of encasements with steel reinforcing mesh or fabric or other approved metal reinforcement. When directed, the Contractor shall supply additional supports where the ground is soft and boggy, where ducts cross under roadways, or where shown on the plans. Under such conditions, the complete duct structure shall be supported on reinforced concrete footings, piers, or piles located at approximately 5-foot (1.5-m) intervals.
All pavement surfaces that are to have ducts installed therein shall be neatly saw cut to form a vertical face. All excavation shall be included in the contract with price for the duct.
Install a plastic, detectable, color as noted, 3 to 6 inches (75 to 150 mm) wide tape, 8 inches (200 mm) minimum below grade above all underground conduit or duct lines not installed under pavement. Utilize the 3-inch (75-mm) wide tape only for single conduit runs. Utilize the 6-inch (150-mm) wide tape for multiple conduits and duct banks. For duct banks equal to or greater than 24 inches (600 mm) in width, utilize more than one tape for sufficient coverage and identification of the duct bank as required.
When existing cables are to be placed in split duct, encased in concrete, the cable shall be carefully located and exposed by hand tools. Prior to being placed in duct, the RPR shall be notified so that he may inspect the cable and determine that it is in good condition. Where required, split duct shall be installed as shown on the drawings or as required by the RPR.
110-3.3 Conduits without concrete encasement. Trenches for single-conduit lines shall be not less than 6 inches (150 mm) nor more than 12 inches (300 mm) wide. The trench for 2 or more conduits installed at the same level shall be proportionately wider. Trench bottoms for conduits without concrete encasement shall be made to conform accurately to grade so as to provide uniform support for the conduit along its entire length.
Unless otherwise shown on the plans, a layer of fine earth material, at least 4 inches (100 mm) thick (loose measurement) shall be placed in the bottom of the trench as bedding for the conduit. The bedding material shall consist of soft dirt, sand or other fine fill, and it shall contain no particles that would be retained on a 1/4-inch (6.3 mm) sieve. The bedding material shall be tamped until firm. Flowable backfill may alternatively be used.
Unless otherwise shown on plans, conduits shall be installed so that the tops of all conduits within the the tops of the conduits are at
least 24 inches (60 cm) below the finished grade per National Electric Code (NEC), Table 300.5. 240
Ukiah Municipal Airport Item L-110 Airport Underground Electrical Duct Banks and Conduits Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019XX 100%
When two or more individual conduits intended to carry conductors of equivalent voltage insulation rating are installed in the same trench without concrete encasement, they shall be spaced not less than 3 inches (75 mm) apart (measured from outside wall to outside wall) in a horizontal direction and not less than 6 inches (150 mm) apart in a vertical direction. Where two or more individual conduits intended to carry conductors of differing voltage insulation rating are installed in the same trench without concrete encasement, they shall be placed not less than 3 inches (75 mm) apart (measured from outside wall to outside wall) in a horizontal direction and lot less than 6 inches (150 mm) apart in a vertical direction.
Trenches shall be opened the complete length between normal termination points before conduit is installed so that if any unforeseen obstructions are encountered, proper provisions can be made to avoid them.
Conduits shall be installed using conduit spacers. No. 4 reinforcing bars shall be driven vertically into the soil a minimum of 6 inches (150 mm) to anchor the assembly into the earth while backfilling. For this purpose, the spacers shall be fastened down with locking collars attached to the vertical bars. Spacers shall be installed at 5-foot (1.5-m) intervals. Spacers shall be in the proper sizes and configurations to fit the conduits. Locking collars and spacers shall be submitted to the RPR for review prior to use. 110-3.4 Markers. Not used this Project.
110-3.5 Backfilling for conduits. For conduits, 8 inches (200 mm) of sand, soft earth, or other fine fill (loose measurement) shall be placed around the conduits ducts and carefully tamped around and over them with hand tampers. The remaining trench shall then be backfilled and compacted per Item P-152 except that material used for back fill shall be select material not larger than 4 inches (100 mm) in diameter.
Flowable backfill may alternatively be used.
Trenches shall not contain pools of water during back filling operations.
The trench shall be completely backfilled and tamped level with the adjacent surface; except that, where sod is to be placed over the trench, the backfilling shall be stopped at a depth equal to the thickness of the sod to be used, with proper allowance for settlement.
Any excess excavated material shall be removed and disposed of per instructions issued by the RPR. 110-3.6 Backfilling for duct banks. After the concrete has cured, the remaining trench shall be backfilled and compacted per Item Pbackfill shall be select material not larger than 4 inches (100 mm) in diameter. In addition to the requirements of Item P-152, where duct banks are installed under pavement, one moisture/density test per whichever is less.
Flowable backfill may alternatively be used.
Trenches shall not contain pools of water during backfilling operations.
The trench shall be completely backfilled and tamped level with the adjacent surface; except that, where sod is to be placed over the trench, the backfilling shall be stopped at a depth equal to the thickness of the sod to be used, with proper allowance for settlement.
Any excess excavated material shall be removed and disposed of per instructions issued by the RPR. 110-3.7 Restoration. Where sod has been removed, it shall be replaced as soon as possible after the backfilling is completed. All areas disturbed by the work shall be restored to its original condition. The restoration shall include sodding, topsoiling, fertilizing, seeding, and mulching shown on the plans. The Contractor shall be held responsible for maintaining all disturbed surfaces and replacements until final acceptance. All restoration shall be considered incidental to the respective L-110 pay item. Following 241
Ukiah Municipal Airport Item L-110 Airport Underground Electrical Duct Banks and Conduits Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019XX 100%
restoration of all trenching near airport movement surfaces, the Contractor shall thoroughly visually inspect the area for foreign object debris (FOD) and remove any such FOD that is found. This FOD inspection and removal shall be considered incidental to the pay item of which it is a component part. 110-3.8 Ownership of removed cable. All cable removed during the project shall become property of the contractor to be disposed of off-site.
METHOD OF MEASUREMENT
110-4.1 Underground conduits and duct banks shall be measured by the linear feet of conduits and duct banks installed, including encasement, locator tape, trenching and backfill with designated material, and restoration, and for drain lines, the termination at the drainage structure, all measured in place, completed, and accepted. Separate measurement shall be made for the various types and sizes.
BASIS OF PAYMENT
110-5.1 Payment will be made at the contract unit price per linear foot for each type and size of conduit and duct bank completed and accepted, including trench and backfill with the designated material, and, for drain lines, the termination at the drainage structure. This price shall be full compensation for removal and disposal of existing duct banks and conduits as shown on the plans, furnishing all materials and for all preparation, assembly, and installation of these materials, and for all labor, equipment, tools, and incidentals necessary to complete this item per the provisions and intent of the plans and specifications.
Payment will be made under:
Item L-110-5.1a Non-Encased Electrical Duct Bank, 1-Way, 2-Inch - per linear foot Item L-110-5.1b Concrete Encased Electrical Duct Bank, 1-Way, 2-Inch - per linear foot Item L-110-5.1c Concrete Encased Electrical Duct Bank, 2-Way, 2-Inch - per linear foot Item L-110-5.1d Concrete Encased Electrical Duct Bank, 4-Way, 2-Inch - per linear foot Item L-110-5.1e Concrete Encased Electrical Duct Bank, 5-Way, 2-Inch - per linear foot Item L-110-5.1f Concrete Encased Electrical Duct Bank, 6-Way, 2-Inch - per linear foot Item L-110-5.1g Concrete Encased Electrical Duct Bank, 7-Way, 2-Inch - per linear foot
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
Advisory Circular (AC)
AC 150/5340-30 Design and Installation Details for Airport Visual Aids AC 150/5345-53 Airport Lighting Equipment Certification Program ASTM International (ASTM)
ASTM A615 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
242
Ukiah Municipal Airport Item L-110 Airport Underground Electrical Duct Banks and Conduits Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-016-2019XX 100%
National Fire Protection Association (NFPA)
NFPA-70 National Electrical Code (NEC)
Underwriters Laboratories (UL)
UL Standard 6 Electrical Rigid Metal Conduit - Steel
UL Standard 514B Conduit, Tubing, and Cable Fittings
UL Standard 514C Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers UL Standard 1242 Electrical Intermediate Metal Conduit Steel UL Standard 651 Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings UL Standard 651A Type EB and A Rigid PVC Conduit and HDPE Conduit END OF ITEM L-110
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Errata 150-5370-10H, 6/26/20
Ukiah Municipal Airport Item L-115 Electrical Manholes and Junction Structures Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Item L-115 Electrical Manholes and Junction Structures
DESCRIPTION
115-1.1 This item shall consist of electrical manholes and junction structures (hand holes, pull boxes, junction cans, etc.) installed per this specification, at the indicated locations and conforming to the lines, grades and dimensions shown on the plans or as required by the RPR. This item shall include the installation of each electrical manhole and/or junction structures with all associated excavation, backfilling, sheeting and bracing, concrete, reinforcing steel, ladders, appurtenances, testing, dewatering and restoration of surfaces to the satisfaction of the RPR including removal of existing manholes and junction structures as shown on the plans.
EQUIPMENT AND MATERIALS
115-2.1 General.
a. All equipment and materials covered by referenced specifications shall be subject to acceptance cation of compliance with the applicable specification when so requested by the RPR.
b.
materials per these specifications. Materials supplied and/or installed that do not comply with these specifications shall be removed (when directed by the RPR) and replaced with materials that comply with c. All materials and equipment used to construct this item shall be submitted to the RPR for approval prior to ordering the equipment. Submittals consisting of marked catalog sheets or shop drawings shall be provided. Submittal data shall be presented in a clear, precise and thorough manner. Original catalog sheets are preferred. Photocopies are acceptable provided they are as good a quality as the original.
Clearly and boldly mark each copy to identify products or models applicable to this project. Indicate all optional equipment and delete any non-pertinent data. Submittals for components of electrical equipment and systems shall identify the equipment to which they apply on each submittal sheet. Markings shall be made bold and clear with arrows or circles (highlighting is not acceptable). The Contractor is solely responsible for delays in the project that may accrue directly or indirectly from late submissions or resubmissions of submittals.
d. The data submitted shall be sufficient, in the opinion of the RPR, to determine compliance with the plans and specifications. The Contr electronically submitted in pdf format, tabbed by specification section. The RPR reserves the right to reject any and all equipment, materials or procedures that do not meet the system design and the standards and codes, specified in this document. e. All equipment and materials furnished and installed under this section shall be guaranteed against defects in materials and workmanship for a period of at least twelve (12) months from the date of final acceptance by the Owner. The defective materials and/or equipment shall be repaired or replaced, at the no additional cost to the Owner.
115-2.2 Concrete structures. Concrete shall be proportioned, placed, and cured per Item P-610, Concrete for Miscellaneous Structures. Cast-in-place concrete structures shall be as shown on the plans. 115-2.3 Precast concrete structures. Precast concrete structures shall be furnished by a plant meeting National Precast Concrete Association Plant Certification Program or another engineer approved third party certification program. Provide precast concrete structures where shown on the plans. 244
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Precast concrete structures shall be an approved standard design of the manufacturer. Precast units shall have mortar or bitumastic sealer placed between all joints to make them watertight. The structure shall be designed to withstand 100,000 lb aircraft loads, unless otherwise shown on the plans. Openings or knockouts shall be provided in the structure as detailed on the plans.
Threaded inserts and pulling eyes shall be cast in as shown on the plans.
If the Contractor chooses to propose a different structural design, signed and sealed shop drawings, design calculations, and other information requested by the RPR shall be submitted by the Contractor to allow for a full evaluation by the RPR. The RPR shall review per the process defined in the General Provisions. 115-2.4 Junction boxes. Junction boxes shall be L-867 Class 1 (non-load bearing) or L-868 Class 1 (load bearing) airport light bases that are encased in concrete. The light bases shall have a L-894 blank cover, gasket, and stainless-steel hardware. All bolts, studs, nuts, lock washers, and other similar fasteners used for the light fixture assemblies must be fabricated from 316L (equivalent to EN 1.4404), 18-8, 410, or 416 stainless steel. If 18-8, 410, or 416 stainless steel is utilized it shall be passivated and be free from any discoloration. Covers shall be 3/8-inch (9-mm) thickness for L-867 and 3/4-inch (19-mm) thickness for L868. All junction boxes shall be provided with both internal and external ground lugs. 115-2.5 Mortar. The mortar shall be composed of one part of cement and two parts of mortar sand, by volume. The cement shall be per the requirements in ASTM C150, Type I. The sand shall be per the requirements in ASTM C144. Hydrated lime may be added to the mixture of sand and cement in an amount not to exceed 15% of the weight of cement used. The hydrated lime shall meet the requirements of ASTM C206. Water shall be potable, reasonably clean and free of oil, salt, acid, alkali, sugar, vegetable, or other substances injurious to the finished product. 115-2.6 Concrete. Concrete shall be proportioned, placed, and cured per state department of transportation structural concrete with minimum 25% Type F fly ash, and a minimum allowable compressive strength of 4,000 psi (28 MPa).
115-2.7 Frames and covers. The frames shall conform to one of the following requirements:
a. ASTM A48 Gray iron castings
b. ASTM A47 Malleable iron castings
c. ASTM A27 Steel castings
d. ASTM A283, Grade D Structural steel for grates and frames e. ASTM A536 Ductile iron castings
f. ASTM A897 Austempered ductile iron castings
All castings specified shall withstand a maximum tire pressure of 250 psi and maximum load of 100,000 lbs.
All castings or structural steel units shall conform to the dimensions shown on the plans and shall be designed to support the loadings specified.
Each frame and cover unit shall be provided with fastening members to prevent it from being dislodged by traffic, but which will allow easy removal for access to the structure.
All castings shall be thoroughly cleaned. After fabrication, structural steel units shall be galvanized to meet the requirements of ASTM A123.
cover shall be as shown on the plans or approved equivalent. No cable notches are required. 245
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Ukiah Municipal Airport Item L-115 Electrical Manholes and Junction Structures Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Each manhole shall be provided with -- PERMIT-REQUIRED CONFINED SPACE, DO 1910.146 (c)(2).
115-2.8 Ladders. Ladders, if specified, shall be galvanized steel or as shown on the plans. 115-2.9 Reinforcing steel. All reinforcing steel shall be deformed bars of new billet steel meeting the requirements of ASTM A615, Grade 60.
115-2.10 Bedding/special backfill. Bedding or special backfill shall be as shown on the plans. 115-2.11 Flowable backfill. Flowable material used to backfill shall conform to the requirements of Item P-153, Controlled Low Strength Material.
115-2.12 Cable trays. Cable trays shall be of plastic or polycarbonate. Cable trays shall be located as shown on the plans.
115-2.13 Plastic conduit. Plastic conduit shall comply with Item L-110, Airport Underground Electrical Duct Banks and Conduits.
115-2.14 Conduit terminators. Conduit terminators shall be pre-manufactured for the specific purpose and sized as required or as shown on the plans.
115-2.15 Pulling-in irons. Pulling-in irons shall be manufactured with 7/8-inch (22 mm) diameter hotdipped galvanized steel or stress-relieved carbon steel roping designed for concrete applications (7 strand, 1/2-inch (12 mm) diameter with an ultimate strength of 270,000 psi (1862 MPa)). Where stress-relieved carbon steel roping is used, a rustproof sleeve shall be installed at the hooking point and all exposed surfaces shall be encapsulated with a polyester coating to prevent corrosion. 115-2.16 Ground rods. Ground rods shall be one piece, copper clad steel. The ground rods shall be of the length and diameter specified on the plans, but in no case shall they be less than 10 feet long nor less than 3/4 inch in diameter.
CONSTRUCTION METHODS
115-3.1 Unclassified excavation. within the
work area prior to excavation. Damage to utility lines, through lack of care in excavating, shall be repaired or replaced to the satisfaction of the RPR without additional expense to the Owner.
The Contractor shall perform excavation for structures and structure footings to the lines and grades or elevations shown on the plans or as staked by the RPR. The excavation shall be of sufficient size to permit the placing of the full width and length of the structure or structure footings shown.
All excavation shall be unclassified and shall be considered incidental to Item L-115. Dewatering necessary for structure installation and erosion per federal, state, and local requirements is incidental to Item L-115.
Boulders, logs and all other objectionable material encountered in excavation shall be removed. All rock and other hard foundation material shall be cleaned of all loose material and cut to a firm surface either level, stepped or serrated, as directed by the RPR. All seams, crevices, disintegrated rock and thin strata shall be removed. When concrete is to rest on a surface other than rock, special care shall be taken not to disturb the bottom of the excavation. Excavation to final grade shall not be made until just before the concrete or reinforcing is to be placed.
The Contractor shall provide all bracing, sheeting and shoring necessary to implement and protect the excavation and the structure as required for safety or conformance to governing laws. The cost of bracing, sheeting and shoring shall be included in the unit price bid for the structure. 246
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Unless otherwise provided, bracing, sheeting and shoring involved in the construction of this item shall be removed by the Contractor after the completion of the structure. Removal shall be effected in a manner that will not disturb or mar finished masonry. The cost of removal shall be included in the unit price bid for the structure.
After each excavation is completed, the Contractor shall notify the RPR. Structures shall be placed after the RPR has approved the depth of the excavation and the suitability of the foundation material.
Prior to installation the Contractor shall provide a minimum of 6 inches (150 mm) of sand or a material approved by the RPR as a suitable base to receive the structure. The base material shall be compacted and graded level and at proper elevation to receive the structure in proper relation to the conduit grade or ground cover requirements, as indicated on the plans.
115-3.2 Concrete structures. Concrete structures shall be built on prepared foundations conforming to the dimensions and form indicated on the plans. The concrete and construction methods shall conform to the requirements specified above. Any reinforcement required shall be placed as indicated on the plans and shall be approved by the RPR before the concrete is placed. 115-3.3 Precast unit installations. Precast units shall be installed plumb and true. Joints shall be made watertight by use of sealant at each tongue-and-groove joint and at roof of manhole. Excess sealant shall be removed and severe surface projections on exterior of neck shall be removed. 115-3.4 Placement and treatment of castings, frames and fittings. All castings, frames and fittings shall be placed in the positions indicated on the Plans or as directed by the RPR and shall be set true to line and to correct elevation. If frames or fittings are to be set in concrete or cement mortar, all anchors or bolts shall be in place and position before the concrete or mortar is placed. The unit shall not be disturbed until the mortar or concrete has set.
Field connections shall be made with bolts, unless indicated otherwise. Welding will not be permitted unless shown otherwise on the approved shop drawings and written approval is granted by the casting manufacturer. Erection equipment shall be suitable and safe for the workman. Errors in shop fabrication or deformation resulting from handling and transportation that prevent the proper assembly and fitting of parts shall be reported immediately to the RPR and approval of the method of correction shall be Anchor bolts and anchors shall be properly located and built into connection work. Bolts and anchors shall be preset by the use of templates or such other methods as may be required to locate the anchors and anchor bolts accurately.
Pulling-in irons shall be located opposite all conduit entrances into structures to provide a strong, convenient attachment for pulling-in blocks when installing cables. Pulling-in irons shall be set directly into the concrete walls of the structure.
115-3.5 Installation of ladders. Not used this project. 115-3.6 Removal of sheeting and bracing. In general, all sheeting and bracing used to support the sides of trenches or other open excavations shall be withdrawn as the trenches or other open excavations are being refilled. That portion of the sheeting extending below the top of a structure shall be withdrawn, unless otherwise directed, before more than 6 inches (150 mm) of material is placed above the top of the structure and before any bracing is removed. Voids left by the sheeting shall be carefully refilled with selected material and rammed tight with tools especially adapted for the purpose or otherwise as may be approved.
The RPR may direct the Contractor to delay the removal of sheeting and bracing if, in his judgment, the installed work has not attained the necessary strength to permit placing of backfill. 247
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115-3.7 Backfilling. After a structure has been completed, the area around it shall be backfilled in horizontal layers not to exceed 6 inches (150 mm) in thickness measured after compaction to the density requirements in Item P-152. Each layer shall be deposited all around the structure to approximately the same elevation. The top of the fill shall meet the elevation shown on the plans or as directed by the RPR.
Backfill shall not be placed against any structure until approval is given by the RPR. In the case of concrete, such approval shall not be given until tests made by the laboratory under supervision of the RPR establish that the concrete has attained sufficient strength to provide a factor of safety against damage or strain in withstanding any pressure created by the backfill or the methods used in placing it.
Where required, the RPR may direct the Contractor to add, at his own expense, sufficient water during compaction to assure a complete consolidation of the backfill. The Contractor shall be responsible for all damage or injury done to conduits, duct banks, structures, property or persons due to improper placing or compacting of backfill.
115-3.8 Connection of duct banks. To relieve stress of joint between concrete-encased duct banks and structure walls, reinforcement rods shall be placed in the structure wall and shall be formed and tied into duct bank reinforcement at the time the duct bank is installed. 115-3.9 Grounding. A ground rod shall be installed in the floor of all concrete structures so that the top of rod extends 6 inches (150 mm) above the floor. The ground rod shall be installed within one foot (30 cm) of a corner of the concrete structure. Ground rods shall be installed prior to casting the bottom slab.
Where the soil condition does not permit driving the ground rod into the earth without damage to the ground rod, the Contractor shall drill a 4-inch (100 mm) diameter hole into the earth to receive the ground rod. The hole around the ground rod shall be filled throughout its length, below slab, with Portland cement grout. Ground rods shall be installed in precast bottom slab of structures by drilling a hole through bottom slab and installing the ground rod. Bottom slab penetration shall be sealed watertight with Portland cement grout around the ground rod.
A grounding bus of 4/0 bare stranded copper shall be exothermically bonded to the ground rod and loop the concrete structure walls. The ground bus shall be a minimum of one foot (30 cm) above the floor of the structure and separate from other cables. No. 2 American wire gauge (AWG) bare copper pigtails shall bond the grounding bus to all cable trays and other metal hardware within the concrete structure.
Connections to the grounding bus shall be exothermic. If an exothermic weld is not possible, connections to the grounding bus shall be made by using connectors approved for direct burial in soil or concrete per UL 467. Hardware connections may be mechanical, using a lug designed for that purpose. 115-3.10 Cleanup and repair. After erection of all galvanized items, damaged areas shall be repaired by applying a liquid cold-galvanizing compound per MIL-P-21035. Surfaces shall be prepared, and Prior to acceptance, the entire structure shall be cleaned of all dirt and debris. 115-3.11 Restoration. After the backfill is completed, the Contractor shall dispose of all surplus material, dirt and rubbish from the site. The Contractor shall restore all disturbed areas equivalent to or better than their original condition. All sodding, grading and restoration shall be considered incidental to the respective Item L-115 pay item.
The Contractor shall grade around structures as required to provide positive drainage away from the structure.
Areas with special surface treatment, such as roads, sidewalks, or other paved areas shall have backfill compacted to match surrounding areas, and surfaces shall be repaired using materials comparable to original materials.
Following restoration of all trenching near airport movement surfaces, the Contractor shall thoroughly visually inspect the area for foreign object debris (FOD) and remove any such FOD that is found. This 248
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FOD inspection and removal shall be considered incidental to the pay item of which it is a component part.
After all work is completed, the Contractor shall remove all tools and other equipment, leaving the entire site free, clear and in good condition.
115-3.12 Inspection. Prior to final approval, the electrical structures shall be thoroughly inspected for conformance with the plans and this specification. Any indication of defects in materials or workmanship shall be further investigated and corrected. The earth resistance to ground of each ground rod shall not exceed 25 ohms. Each ground rod shall be tested using the fall-of-potential ground impedance test per American National Standards Institute / Institute of Electrical and Electronic Engineers (ANSI/IEEE) Standard 81. This test shall be performed prior to establishing connections to other ground electrodes. 115-3.13 Manhole elevation adjustments. Not used this project. 115-3.14 Duct extension to existing ducts. Where existing concrete encased ducts are to be extended, the duct extension shall be concrete encased plastic conduit. The fittings to connect the ducts together shall be standard manufactured connectors designed and approved for the purpose. The duct extensions shall be installed according to the concrete encased duct detail and as shown on the plans.
METHOD OF MEASUREMENT
115-4.1 Electrical manholes and junction structures shall be measured by each unit completed in place and accepted. The following items shall be included in the price of each unit: All required excavation and dewatering:; sheeting and bracing; all required backfilling with on-site materials; restoration of all surfaces and finished grading and turfing; all required connections; temporary cables and connections; and ground rod testing
BASIS OF PAYMENT
115-5.1 The accepted quantity of electrical manholes and junction structures will be paid for at the Contract unit price per each, complete and in place. This price shall be full compensation for furnishing all materials and for all preparation, excavation, backfilling and placing of the materials, furnishing and installation of appurtenances and connections to duct banks and other structures as may be required to complete the item as shown on the plans and for all labor, equipment, tools and incidentals necessary to complete the structure.
Payment will be made under:
Item L-115-5.1 H20 Rated Electrical Handhole, Standard Lid, Size 1, Per Each
Item L-115-5.2 Aircraft Rated Electrical Handhole, Spring Loaded Lid, Size 2, 36 0 Per Each
Item L-115-5.3 H-20 Rated Electrical Handhole, Spring Loaded Lid, Size 1, 6 Per Each
Item L-115-5.4 Electrical Junction Structure, L-868B with Steel Lid - Per Each 249
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REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
American National Standards Institute / Insulated Cable Engineers Association (ANSI/ICEA) ANSI/IEEE STD 81 IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System
Advisory Circular (AC)
AC 150/5345-7 Specification for L-824 Underground Electrical Cable for Airport Lighting Circuits
AC 150/5345-26 Specification for L-823 Plug and Receptacle, Cable Connectors AC 150/5345-42 Specification for Airport Light Bases, Transformer Housings, Junction Boxes, and Accessories
AC 150/5340-30 Design and Installation Details for Airport Visual Aids AC 150/5345-53 Airport Lighting Equipment Certification Program Commercial Item Description (CID)
A-A 59544 Cable and Wire, Electrical (Power, Fixed Installation) ASTM International (ASTM)
ASTM A27 Standard Specification for Steel Castings, Carbon, for General Application
ASTM A47 Standard Specification for Ferritic Malleable Iron Castings ASTM A48 Standard Specification for Gray Iron Castings
ASTM A123 Standard Specification for Zinc (Hot Dip Galvanized) Coatings on Iron and Steel Products
ASTM A283 Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates
ASTM A536 Standard Specification for Ductile Iron Castings ASTM A615 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
ASTM A897 Standard Specification for Austempered Ductile Iron Castings ASTM C144 Standard Specification for Aggregate for Masonry Mortar ASTM C150 Standard Specification for Portland Cement
ASTM C206 Standard Specification for Finishing Hydrated Lime FAA Engineering Brief (EB)
EB #83 In Pavement Light Fixture Bolts
Mil Spec
MIL-P-21035 Paint High Zinc Dust Content, Galvanizing Repair 250
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National Fire Protection Association (NFPA)
NFPA-70 National Electrical Code (NEC)
END OF ITEM L-115
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Ukiah Municipal Airport Item L-125 Installation of Airport Lighting Systems Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0XX-20XX 100%
Item L-125 Installation of Airport Lighting Systems
DESCRIPTION
125-1.1 This item shall consist of airport lighting systems furnished and installed in accordance with this specification, the referenced specifications, and the applicable advisory circulars (ACs). The systems shall be installed at the locations and in accordance with the dimensions, design, and details shown in the plans.
This item shall include the furnishing of all equipment, materials, services, and incidentals necessary to place the systems in operation as completed units to the satisfaction of the RPR.
EQUIPMENT AND MATERIALS
125-2.1 General.
a. Airport lighting equipment and materials covered by Federal Aviation Administration (FAA) specifications shall be certified under the Airport Lighting Equipment Certification Program in accordance with AC 150/5345-53, current version. FAA certified airfield lighting shall be compatible with each other to perform in compliance with FAA criteria and the intended operation. If the Contractor provides equipment that does not performs as intended because of incompatibility with the system, the Contractor assumes all costs to correct the system for to operate properly. b. Manufacturer's certifications shall not relieve the Contractor of their responsibility to provide materials in accordance with these specifications and acceptable to the RPR. Materials supplied and/or installed that do not comply with these specifications shall be removed, when directed by the RPR and replaced with materials, which do comply with these specifications, at the sole cost of the Contractor. c. All materials and equipment used shall be submitted to the RPR for approval prior to ordering the equipment. Submittals consisting of marked catalog sheets or shop drawings shall be provided. Clearly mark each copy to identify pertinent products or models applicable to this project. Indicate all optional equipment and delete non-pertinent data. Submittals for components of electrical equipment and systems shall identify the equipment for which they apply on each submittal sheet. Markings shall be clearly made with arrows or circles (highlighting is not acceptable). The Contractor shall be responsible for delays in the project accruing directly or indirectly from late submissions or resubmissions of submittals. d. The data submitted shall be sufficient, in the opinion of the RPR, to determine compliance with the plans and specifications. The Contractor's submittals shall be submitted in electronic PDF format, tabbed by specification section. The RPR reserves the right to reject any or all equipment, materials or specified herein.
e. All equipment and materials furnished and installed under this section shall be guaranteed against defects in materials and workmanship for a period of at least twelve (12) months from final acceptance by the Owner. The defective materials and/or equipment shall be repaired or replaced, at the Owner's discretion, with no additional cost to the Owner.
All LED light fixtures, with the exception of obstruction lighting (AC 150/5345-43) must be warranted by the manufacturer for a minimum of 4 years after date of installation inclusive of all electronics. Obstruction lighting warranty is set by the individual manufacturer.
EQUIPMENT AND MATERIALS
125-2.2 Conduit/Duct. Conduit shall conform to Specification Item L-110 Airport Underground Electrical Duct Banks and Conduits.
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125-2.3 Cable and Counterpoise. Cable and Counterpoise shall conform to Item L-108 Underground Power Cable for Airports.
125-2.4 Tape. Rubber and plastic electrical tapes shall be Scotch Electrical Tape Numbers 23 and 88 respectively, as manufactured by 3M Company or an approved equal. 125-2.5 Cable Connections. Cable Connections shall conform to Item L-108 Installation of Underground Cable for Airports.
125-2.6 Retroreflective Markers. Not used this project. 125-2.7 Runway and Taxiway Lights. Runway and taxiway lights shall conform to the requirements of AC 150/5345-46. Lamps shall be of size and type indicated, or as required by fixture manufacturer for each lighting fixture required under this contract. Filters shall be of colors conforming to the specification for the light concerned or to the standard referenced.
Lights
Type Class Mode Style Option Base Filter Transformer Notes L-861(L) 2 1 NA NA L-867 NA Per Manufacturer LED
L-861E(L) 2 1 NA NA L-867 NA Per Manufacturer LED
L-861T(L) 2 1 NA NA L-867 NA Per Manufacturer LED
125-2.7a LED Medium Intensity Runway Lights (MIRL) Elevated. L-861 Runway Lights shall have an LED light source. The fixtures shall conform to the requirements of FAA Advisory Circular 150/5345- 46, -53, Appendix 3,
current editions, at the time of bid. The minimum rated life of the LED light source shall be 50,000 hours.
The L-861(L) shall use an outer lens colored as shown on the Plans. The L-861(L) light fixture shall operate on a 6.6A circuit at 60Hz using a 6.6A (secondary) isolation transformer sized by the manufacturer. The LED runway edge lights shall not have the heater/artic kit option. 125-2.7b LED Medium Intensity Threshold Lights (MITHL) Elevated. L-861E or L-861SE Runway Threshold Lights shall an LED light source. The fixtures shall conform to the requirements of FAA Advisory Circular 150/5345-
in AC 150/5345-53, Appendix 3, current editions, at the time of bid. The minimum rated life of the LED light source shall be 50,000 hours. The L-861E/SE(L) shall use an optical outer lens colored as shown on the Plans. The L-861E/SE(L) light fixture shall operate on a 6.6A circuit at 60Hz using a
6.6A (secondary) isolation transformer sized per manufacturer. The LED runway edge lights shall not have the heater/artic kit options.
125-2.7c LED Medium Intensity Taxiway Edge Lights (MITL) elevated. LED taxiway edge fixtures shall be FAA Type L-861T(L), with LED light source. The fixtures shall conform to the requirements of FAA Advisory Circular 150/5345-
-53, Appendix 3, current editions, at the
time of bid. Edge lights shall be operable from 30/45 watt transformers but shall be equipped with 10/15 watt transformers. The minimum rated life of the LED light sources shall be 50,000 hours. Lens color shall be aviation blue. Light bases shall be FAA Type L-867, Class 1, Size B, 24 inches deep. The LED taxiway edge lights shall not have the heater/artic kit options.
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125-2.8 Runway and Taxiway Signs. Runway and Taxiway Guidance Signs should conform to the requirements of AC 150/5345-44.
Signs
Type Size Style Class Mode Notes
L-858(L) 1 2 2 2 LED
125-2.8a LED Lighted Airfield Guidance Signs. LED lighted airfield guidance signs shall conform to the details shown on the Plans. All signs shall utilize a LED lamp source for illumination. Sign size, style and mode will be listed on the Plans. All signs shall be internally illuminated and shall be doublesided even if one side is blank. L-830 isolation transformers shall be provided for each sign and sized per disconnect switch) with cover over the
the sign and light source when the lighting circuit is energized. Signs shall be installed as required for FAA certification. Signs shall have stainless steel bird spikes fastened to the entire top of the sign. Signs shall have tethers on each side, regardless of sign size or length. 125-2.9 Runway End Identifier Light (REIL). The REIL fixtures shall be provided by the FAA. 125-2.10 Precision Approach Path Indicator (PAPI). The light units for the PAPI shall be provided by the FAA. Verify with FAA all PAPI equipment to be provided by the Contractor. 125-2.11 Circuit Selector Cabinet. Not used this project. 125-2.12 Light Base and Transformer Housings. Light Base and Transformer Housings should conform to the requirements of AC 150/5345-42. Light bases shall be Type L-867 and L-868, Class 1A, Size B, shall be provided as indicated or as required to accommodate the fixture or device installed thereon. Base plates, cover plates, and adapter plates shall be provided to accommodate various sizes of fixtures.
125-2.13 Isolation Transformers. Isolation Transformers shall be Type L-830, size as required for each installation. Transformer shall conform to AC 150/5345-47. 125-2.14 Miscellaneous Lighting Equipment. In addition to the fixture requirements, the Contractor shall provide the following miscellaneous lighting equipment:
Elevated LED Medium Intensity Runway Light (MIRL)
2 Spare MIRL, L-861(L) complete light fixtures (include stem, base plate, and isolation transformer) (1 W/W and 1 W/Y)
4 Spare MIRL, L-861(L) light engines (fixture only) (2 W/W and 2 W/Y) 10 Spare Frangible Couplings
4 Spare Isolation Transformers
2 Spare Lens Assemblies (or 2 more light engines if only available as a single unit) Elevated LED Medium Intensity Threshold Light (MITHL)
2 Spare MITHL, L-861E(L) complete light fixtures (include stem, base plate, and isolation transformer)
2 Spare MITHL, L-861E(L) light engines (fixture only)
2 Spare Isolation Transformers
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Elevated LED Medium Intensity Taxiway Light (MITL)
2 Spare MITL, L-861T(L) complete light fixtures (include stem, base plate, and isolation transformer)
2 Spare MITL, L-861T(L) light engines (fixture only)
10 Spare Frangible Couplings
2 Spare Isolation Transformers
2 Spare Lens Assemblies (or 2 more light engines if only available as a single unit) LED Signs
10 Spare Frangible Couplings
4 Spare Isolation Transformers (2 per each mod)
2 Spare Light Engines, or Light Source (enough to fully relight the largest sign installed in the project)
INSTALLATION
125-3.1 Installation. The Contractor shall furnish, install, connect and test all equipment, accessories, conduit, cables, wires, buses, grounds and support items necessary to ensure a complete and operable airport lighting system as specified here and shown in the plans.
The equipment installation and mounting shall comply with the requirements of the National Electrical Code and state and local code agencies having jurisdiction.
The Contractor shall install the specified equipment in accordance with the applicable advisory circulars and the details shown on the plans.
125-3.2 Testing. All lights shall be fully tested by continuous operation for not less than 24 hours as a completed system prior to acceptance. The test shall include operating the constant current regulator in each step not less than 10 times at the beginning and end of the 24-hour test. The fixtures shall illuminate properly during each portion of the test.
125-3.3 Shipping and Storage. Equipment shall be shipped in suitable packing material to prevent damage during shipping. Store and maintain equipment and materials in areas protected from weather and physical damage. Any equipment and materials, in the opinion of the RPR, damaged during construction or storage shall be replaced by the Contractor at no additional cost to the owner. Painted or recommendations.
125-3.4 Elevated and In-pavement Lights. Not required for this project. 125-3.5 Removal of existing fixtures, signs and foundations. The Contractor shall carefully remove fixtures, signs and foundations as shown on the Plans. This shall include removing the corresponding base cans, sign pads or foundations. This bid item shall include restoration of the affected area to match the existing surrounding area, including acceptable fill and seeding, along with other incidentals as necessary.
The Contractor shall coordinate with the Airport for a salvage area where removed fixtures and signs (including isolation transformers) shall be stored. When the last removed item is placed in the salvage area, the Airport shall have 5 business days to go through and salvage any item(s) for spare parts. Anything left in the salvage area after the 5 business days become property of the Contractor and shall be disposed of offsite. The Contractor shall restore the salvage area to previous conditions after removing any remaining items off-site.
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125-3.6 Removal of VASI system. The Contractor shall remove the existing FAA owned VASI system and turn over the existing light units to the FAA. Direct buried cables shall be abandoned in place with the last 2 feet removed at each end. VASI light unit foundations shall be removed completely, and the area restored to match surrounding areas.
125-3.7 Removal of REIL system. The Contractor shall remove the existing FAA owned REIL system and turn over to the FAA. Direct buried cables shall be abandoned in place with the last 2 feet removed at each end. REIL light unit foundations shall be removed completely, and the area restored to match surrounding areas.
125-3.8 Install Elevated LED Fixtures, and Signs. Where called for on the Plans to install new LED fixtures or signs, this work shall include the installation of new light bases and sign foundation pads, isolation transformers, connectors, grounding wire, ground rods and all miscellaneous equipment and incidental necessary to provide a new fully functional sign or light of the type indicated on the Plans. All components used in this item shall be new and shall be installed as shown on the Plans. 125-3.9 Install LED REILs (FAA provided). The Contractor shall install the new LED REIL system at the location(s) shown on the Plans. The
between the primary-secondary units along with the units itself including the PCA REIL RACKS. Cable, conduit and handholes from the PCA to the REIL ICC units, shall be paid for under other bid item(s).
This item shall include work in the Localizer shelter as shown on the Plans. 125-3.10 Install LED PAPIs (FAA provided). The Contractor shall install the new LED PAPI system at the location(s) shown on the Plans. FAA to provide LHA PAPI units and PAPI Controller. The installation shall follow Plan details, instructions and FAA standards including FAA-918D, FAA-STD019F. This work shall include all work between the PCU rack and the PAPI units, including all work inside the ground rings. Cable, conduit and handholes to the PCU rack (up to the grounding ring) shall be paid for under other bid item(s).
125-3.11 Miscellaneous Lighting Equipment. The Contractor shall deliver the miscellaneous lighting equipment to the Airport as specified above.
METHOD OF MEASUREMENT
125-4.1 New Elevated LED MIRL on new base can will be measured per each installed, completed, and accepted by the RPR.
125-4.2 New Elevated LED MITHL on new base can will be measured per each installed, completed, and accepted by the RPR.
125-4.3 New Elevated LED MITL on new base can will be measured per each installed, completed, and accepted by the RPR.
125-4.4 FAA provided LED REILs on new foundation will be measured per set, installed, completed, and accepted by the RPR.
125-4.5 FAA provided LED PAPIs on new foundations will be measured per set, installed, completed, and accepted by the RPR.
125-4.6 New LED L-858(L) Airfield Guidance Sign with new sign pad will be measured per each installed, completed, and accepted by the RPR.
125-4.7 Miscellaneous Lighting Equipment will be measured per lump sum, delivered and accepted by the RPR.
125-4.8 Remove fixtures will be measured per each, removed fixture, restoration and accepted by the RPR. 256
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125-4.9 Remove guidance signs will be measured per each, removed sign, restoration and accepted by the RPR.
125-4.10 Remove FAA owned REILs will be measured per set, removed REIL system, restoration and accepted by the RPR.
125-4.11 Remove FAA owned VASIs will be measured per set, removed VASI system, restoration and accepted by the RPR.
BASIS OF PAYMENT
125-5.1 New fixtures on new base cans will be paid at the Contract unit price per each item installed and accepted by the RPR. This price shall include full compensation to furnish all materials, labor, equipment, excavation, preparation, assembly, associated light base, concrete, cover, hardware, fixture, light source, isolation transformer, wiring grounding, testing, incidentals and associated items as are applicable for a complete and operational installation.
125-5.2 New LED L-858(L) Airfield Guidance Sign with new pad will be paid at the Contract unit price per each item installed and accepted by the RPR. This price shall include full compensation to furnish all materials, labor, equipment, excavation, preparation, assembly, associated light base, concrete, cover, hardware, fixture, light engine, isolation transformer, wiring grounding, testing, incidentals and associated items as are applicable for a complete and operational installation. 125-5.3 Install FAA provided LED PAPI on new foundations will be paid at the Contract unit price per set, installed and accepted by the RPR. This price shall include full compensation to furnish all materials, labor, equipment, excavation, preparation, assembly, associated PCA rack, concrete, cover, hardware, wiring grounding, lightning arrestors, L-810(L) dual head obstruction light, photocell, disconnects, square ducts, testing, incidentals and associated items as are applicable for a complete and operational installation. 125-5.4 Install FAA provided LED REILs with new foundation will be paid at the Contract unit price per set, installed and accepted by the RPR. This price shall include full compensation to furnish all materials, labor, equipment, excavation, preparation, assembly, associated foundations, concrete, cover, hardware, LED REIL units, PCA rack, wiring grounding, disconnects, current sensing transformer, testing, work in Localizer shelter, incidentals and associated items as are applicable for a complete and operational installation.
125-5.5 Miscellaneous Lighting Equipment will be paid at the Contract unit price per lump sum, furnished and delivered by the Contractor. This price shall include full compensation to furnish all materials, labor, incidentals and associated items as are applicable to complete this item. 125-5.6 Removal of Fixtures, Signs, and foundations will be paid at the Contract unit price per each, removed, restored and accepted by the RPR. This price shall include full compensation to furnish all materials, labor, equipment, preparation, disassembly, removal of associated foundations, concrete, incidentals and associated items as are applicable for a complete removal and restoration of the area, accepted by the Engineer.
125-5.7 Removal of FAA Owned VASI and REIL systems will be paid at the Contract unit price per set, removed, restored and accepted by the RPR. This price shall include full compensation to furnish all materials, labor, equipment, preparation, disassembly, turning over to FAA, removal of associated foundations, concrete, incidentals and associated items as are applicable for a complete removal and restoration of the area, accepted by the Engineer.
Payment will be made under:
Item 125-5.1a LED Medium Intensity Runway Edge Light, L-861(L), per each 257
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Item 125-5.1b LED Medium Intensity Threshold Edge Light, L-861E(L), per each Item 125-5.1c LED Medium Intensity Taxiway Edge Light, L-861T(L), per each Item 125-5.2a LED Guidance Sign, Size 1, L-858(L), Style 2, per each Item 125-5.2b LED Guidance Sign, Size 1, L-858(L), Style 2 , per each Item 125-5.3 FAA-Furnished LED PAPI, L-880(L), per set
Item 125-5.4 FAA-Furnished LED Runway End Identification Light, L849(L), per set Item 125-5.5 Miscellaneous Lighting Equipment, per lump sum Item 125-5.6a Remove Rwy Fixture, per each
Item 125-5.6b Remove Twy Fixture, per each
Item 125-5.6c Remove Airfield Guidance Sign, per each
Item 125-5.6d Remove Rwy Threshold Edge Light, per each Item 125-5.7a Remove FAA Owned VASI System, per lump sum Item 125-5.7b Remove FAA Owned Rwy 33 REIL System, per lump sum
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
Advisory Circulars (AC)
AC 150/5340-18 Standards for Airport Sign Systems
AC 150/5340-26 Maintenance of Airport Visual Aid Facilities AC 150/5340-30 Design and Installation Details for Airport Visual Aids AC 150/5345-5 Circuit Selector Switch
AC 150/5345-7 Specification for L-824 Underground Electrical Cable for Airport Lighting Circuits
AC 150/5345-26 Specification for L-823 Plug and Receptacle, Cable Connectors AC 150/5345-28 Precision Approach Path Indicator (PAPI) Systems AC 150/5345-39 Specification for L-853, Runway and Taxiway Retroreflective Markers AC 150/5345-42 Specification for Airport Light Bases, Transformer Housings, Junction Boxes, and Accessories
AC 150/5345-44 Specification for Runway and Taxiway Signs AC 150/5345-46 Specification for Runway and Taxiway Light Fixtures AC 150/5345-47 Specification for Series to Series Isolation Transformers for Airport Lighting Systems
AC 150/5345-51 Specification for Discharge-Type Flashing Light Equipment AC 150/5345-53 Airport Lighting Equipment Certification Program Engineering Brief (EB)
EB No. 67 Light Sources Other than Incandescent and Xenon for Airport and Obstruction Lighting Fixtures
END OF ITEM L-125
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Section 4
Additional Related Specifications
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Ukiah Municipal Airport Item NS-100 Electrical Work
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ITEM NS-100 ELECTRICAL WORK, GENERAL
DESCRIPTION
100-1.1 The electrical work to be performed under this Contract shall include the furnishing of all supervision, labor, materials, tools, equipment and all incidentals necessary to install new cabling, light fixtures, underground duct, the removal of existing items as shown in plans and restoration to match the existing surface, in accordance with the Federal Aviation Administration Advisory Circular 150/5370-10H, or latest version. All items must be listed as approved in AC 150/5345-53C, or latest version, latest addendum, in effect on the date of advertisement. All other equipment and materials covered by other referenced specifications shall be subject to acceptance through manufacturer's certification of compliance with the applicable FAA specification. The Contractor shall furnish written proof of FAA approval on all equipment covered by FAA specifications. All other equipment and material shall be subject to approval by the Engineer and shall meet the Buy American requirements of the FAA.
All equipment and materials installed on this Contract must be in strict accordance with the plans and specifications. Any deviations from the Contract documents will be rejected during shop drawing review.
The Engineer, at his or her discretion, will determine if said deviations are acceptable and will notify all bidders of the change through issue of addendum.
All work shall be performed in strict accordance with these contract specifications, and drawings and any instructions furnished by the Engineer during execution of the work to aid in interpretation of the drawings or specifications.
The Federal Aviation Administration requires certification that the electrical equipment used in this project meets their requirements. The following testing companies have been accepted by the FAA as Third Party Certifiers under the Airport Lighting Equipment Certification Program:
Intertek Testing Services (Formerly ETL Testing Laboratories, Inc.) (800) 345-3851
100-1.2 Summary of Work. The work to be performed shall include furnishing all labor, supplies, materials, equipment, tools, transportation, and services required to augment, move, install, and complete electrical work as specified herein and as shown on the contract drawings.
This work shall include, but is not limited to, the following:
b. Protect the existing airport vault from any damage to building, equipment, and wiring while adding to or improving the existing equipment in accordance with the plans. c. Remove elevated light fixtures as indicated on plans. e. Furnish and install underground cable in accordance with specifications, at the locations shown on the plans.
f. Furnish and install PVC conduit at the locations indicated and in accordance with specifications, ready for installation of cable.
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g. Ground all signs, light bases, equipment, enclosures, regulators, controls, and conduits installed under this contract as shown in the plans and as required by AC 150/5340-30J, or current edition. h. Furnish and install new handholes as indicated on plans. i. Other items required to complete work are foregoing. The omission of express reference to any parts necessary for complete installation, or that are reasonably incidental to installation, shall not be construed as releasing the Contractor from furnishing such parts. j. The Contractor shall keep all ducts, can banks and manholes covered on a daily basis, to prevent any water or other material from infiltrating the system during construction. In addition, all fixture cans, conduits, and can banks shall be thoroughly cleaned as required in the plans and specifications, prior to installing any lights and transformers.
All items of general work required, such as excavation, cutting, patching, etc., included in this Contract shall be performed by experienced and skilled persons to obtain only the best workmanship. All equipment shall be set square and true with construction. The work shall be under constant supervision by the Contractor or by an authorized and competent foreman with a minimum of five until its completion.
The Contractor shall at all times keep the construction areas free from accumulations of waste material and rubbish and, prior to completion of work, remove any rubbish from and about the project as well as all tools, cable reels, equipment, and materials not a part of the completed project. Upon completion of the construction, the Contractor shall leave the work and premises in a clean, neat, and workmanlike condition satisfactory to the Engineer. The Contractor shall be responsible for the proper performance in all respects, in whole and in part, of the electrical equipment until acceptance of the entire work by the Engineer.
The electrical construction and installation shall be complete, and the Contractor shall furnish all equipment necessary for the satisfactory installation and operation of electrical apparatus and for the operation of the electrical system as indicated, whether specifically mentioned or not.
The Contractor shall submit a detailed construction schedule for all work to be performed. If the Contractor falls significantly behind the submitted schedule, the Contractor shall, upon the Engineer's request, submit a revised schedule for completion of the work within the contract time and modify his operations to provide such additional materials, equipment, and labor necessary to meet the revised schedule. Should the progression of the work be discontinued for any reason, the Contractor shall notify the Engineer at least 24 hours in advance of resuming operations. A minimum of three (3) working days advance notice shall be given to the Engineer and approval received for any disconnections or shutdowns. 100-1.3 Drawings. The drawings, which constitute an integral part of this Contract, shall serve as the working drawings. They indicate the extent and general layout of the lighting system, arrangement of circuits, cables through ducts, connections to existing circuit cables, and other work. Field verification of scale dimensions is required to determine actual locations, distance, and levels. No extra compensation will be allowed because of differences between work shown on the drawings and measurements in the field.
The Contractor shall check the plans and specifications and, if any portion of the work is found to be 263
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omitted, unclear, or in error, the Contractor shall immediately notify the Engineer. The direction of the Engineer shall be followed and the work completed accordingly.
The design drawings may be utilized in the preparation of the shop or working drawings showing the permanent construction as actually made.
The plans and specifications are complementary and what is called for in either one shall be binding as if called for in both.
Where a disagreement exists between the plans and specifications, the item or arrangements of better quality, greater quantity, or higher cost shall be included in the base bid. 100-1.4 Shop Drawings. Before any equipment is ordered and prior to commencement of installation of the electrical systems, a complete schedule of materials and detailed shop drawings covering all items of equipment proposed for installation shall be submitted for approval by the Engineer. Shop drawings shall include, but not be limited to:
a. Physical dimensions and weights of all equipment
b. Operating ratings and specifications of all equipment and cable.
The submittal shall initially include PDF of catalog cuts, diagrams, drawings, brochures, or other such descriptive data as may be required by the Engineer. No equipment shall be ordered or put into manufacture until these shop drawings or brochures have been approved by the Engineer. The Engineer will be allowed ten (10) working days to review all shop drawings or brochures. The Engineer s review shall be based on a complete submittal covering all items to be furnished and installed under the contract. In the event any items, materials or equipment contained in the schedule fail to comply with specification requirements, such items will be rejected.
100-1.5 Site Conditions. The existence of any known buried wires, conduits, pipes, ducts or other facilities is shown in a general way only. It will be the duty of the Contractor, with the help of airport and FAA personnel, to visit the site and make exact determination of the existence and location of any facilities prior to commencing any work. It is understood that the Contractor will be responsible for making the exact determination of the location and condition of such facilities. Any costs shall be paid by the Contractor. 100-1.6 Codes. The Contractor shall comply with all ordinances, laws, regulations, and codes applicable to the work involved. This does not relieve the Contractor from furnishing and installing work shown or specified which may be beyond the requirements of such ordinances, laws, regulations, and codes.
Regular inspections shall be requested by the Contractor as required by any and all regulations. All charges for the inspection called for by regulating agencies of installation or plans and specifications shall be paid by the Contractor.
100-1.7 Maintenance and Operating Instructions. The Contractor shall provide the Owner with complete instructions in the proper care and operation of the equipment installed under this contract. This is 264
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considered part of the final inspection, and final acceptance will not be given until the Owners representative is knowledgeable about the system.
100-1.8 Maintenance and Operating Manual. The Contractor shall collect and assemble details, instructions, schematics of actual equipment and operation, and directions supplied by the manufacturer with all equipment. Final acceptance of the work will be withheld until such data has been completely presented to the Engineer for transmission to the Owner. 100-1.9 As-Built Drawing Notes. The Contractor shall mark up one set of blueline prints to show the asbuilt conditions which differ from the original. The Contractor will furnish a newly printed set of blueline drawings for this purpose. As-builts shall be kept up daily and initialed off by the Contractor and Engineers inspector weekly. There shall be sufficient detail, including station numbers, markers, panel circuit numbers, all splice points in the airfield circuits etc., to allow for easy location and correcting tracings. This work shall be completed and accepted by the Engineer before approval of final payment. 100-1.10 Installation Methods. The method used for the installation of electrical systems and equipment shall conform to the National Electrical Code (NEC), the National Electrical Contractors Association (NECA) published "Standard of Installation" except where specifically specified or shown otherwise, and to any state and local codes.
All electrical materials, construction methods, and installation shall be in accordance with applicable Federal Aviation Administration's advisory circulars, the latest edition, including amendments, of the Electrical Code, and the American National Standards Institute Standard C2, latest edition.
All ferrous metalwork shall be galvanized. If any galvanizing is damaged, the metalwork shall be refinished by cleaning, treating with one coat of wash primer conforming to Federal (military) specification MIL-P152388, and given one shop coat of zinc-rich base paint (zinc dust paint) conforming to Federal Specification TI-P-641F Type II, immediately when the wash primer is dry.
In order to prevent deterioration due to corrosion, all bolts, nuts, studs, washers, pins, terminals, springs, hangers, and similar fastenings and fittings shall be, where practicable, of an approved corrosion-resisting material such as stainless steel, brass, or bronze, or of a material treated in an approved manner to render it adequately resistant to corrosion. Hot-dip galvanizing per ASTM Specification A 153 will be considered such approved treatment for all ferrous hardware. Cap screws, set screws, and tap bolts shall be of stainless steel, brass, or bronze.
100-1.11 Quality Assurance.
a. Workmanship. Workmanship shall be consistent with the best commercial practices for installation of this type.
b. Materials. Materials and equipment shall be specified herein. When materials are used that are not specifically designated herein, they shall be in accordance with the best industry standards and practices for equipment of this type. All components and parts shall be suitable for operation under the environmental conditions specified herein and as shown on the plans. Metal parts shall be either inherently corrosionresistant or shall be suitably protected to resist corrosion or oxidation during extended service life. 265
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c. Parts Rating. All parts shall be of adequate rating for the application and shall not be operated above the parts manufacturer's recommended ratings.
d. Environmental Conditions. The equipment installed outdoors shall be designated for continuous outdoor operation under the following environmental conditions:
(1) Temperature - Any ambient temperature from minus 20°F to plus 120°F. (2) Altitude 1000 MSL.
(3) Humidity - Up to 100 percent
(4) Sand and Dust - Exposure to windblown sand and dust particles. (5) Wind - Airfield signs shall be operable in wind velocities up to 200 mph per AC 150/5345-44J or current edition.
(6) Water - Components provided for underground installation, directly buried or installed in underground housing, shall be suitable for continuous operation submerged in water. 100-1.12 Testing. The Contractor shall furnish all equipment and appliances necessary to test the completed systems. The installation of all equipment will be inspected by a representative of the Engineer while being installed. Before the acceptance inspections and tests are to be made, the Contractor shall notify the Engineer by written notice when they are ready.
SAFETY RULES
100-2.1 Quality Assurance. Safety is the responsibility of everyone and must be practiced in every activity that is performed. The Electrical Safety Rules shall include local operational procedures, local, state, and OSHA requirements and shall be observed and complied with in every detail. Any violation there of the safety rules shall be cause for immediate termination of the Contractor's authority to proceed with the work and recourse to his Surety for completion of the Project. Some of the Electrical Safety Rules are as follows:
a. The Contractor shall be responsible for conforming to the safety requirements of Appendix 1 of AC 150/5370-2G, or current edition.
b. Electrical circuits shall be de-energized before work is accomplished thereon. c. Electrical circuits shall be considered de-energized only when one of the following conditions exists:
(1) Switches connecting subject circuit to the energy supply are observed in the OPEN position, with an air break, and safety-tagged (padlocked) in the OPEN position; (2) Electrically operated switches are visibly OPEN, blocked or racked in the OPEN position, and safety tagged OPEN;
(3) Whenever the supply circuit breaker is not visible and clearly identified, the circuit shall be grounded. The ground connection shall be safety-tagged before work thereon, when the ground connection is not within sight of the work area.
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(4) Oil switches observed OPEN in a sight window, and tagged OPEN; or oil fuse cutouts with fuse carrier removed and tagged OPEN.
d. Use of Red Safety Tags:
(1) Safety tags shall be filled out and connected to any de-energized switch or equipment opened for protection of personnel working on that circuit.
(2) Safety tags shall be removed only by the employee who placed the tag. (3) Equipment with a safety tag attached shall not be operated, and connections with a safety tag attached shall not be changed.
In addition to the electrical safety rules the electrical contractor shall be familiar and knowledgeable with National Fire Protection Association (NFPA) 70E, Standard for Electrical Safety in the Workplace. Should a conflict between the safety rules and/or this document occur, the stricter (safer) shall apply.
MEASUREMENT AND PAYMENT
100-3.1 No separate measurement or direct payment are applicable to items within this NS-100 specification.
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MATERIAL REQUIREMENTS
WW-C-581
Conduit, Metal, Rigid; and Coupling, Elbow; and Nipple, Electrical Conduit: Zinc-Coated.
AC 150/5340-30J Design and Installation Details for Airport Visual Aids AC 150/5340-18F Standards for Airport Signs System
AC 150/5345-42J Specification for Airport Light Bases, Transformer Houses, Junction Boxes, and Accessories
AC 150/5345-44J Specification for Taxiway and Runway Signs AC 150/5345-46D Specification for Runway and Taxiway Light Fixtures FAA-STD-019E
Lightning and Surge Protection, Grounding, Bonding and Shielding Requirements for Facilities and Electronic Equipment
END OF ITEM NS-100
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Ukiah Municipal Airport Item NS-101 Locate and Protect Existing Equipment Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
ITEM NS-101 LOCATE AND PROTECT EXISTING EQUIPMENT
DESCRIPTION
101-1.1 This Work includes the testing and location of all power and control circuits that are located within the construction area or haul routes, providing prompt repair or replacement of electrical cables or equipment damaged during construction operations, careful handling of any FAA installed cables or equipment encountered during construction and/or removal/reinstallation of existing cables. This also includes protecting existing equipment in the area of construction.
CONSTRUCTION METHODS
101-2.1 Immediately prior to construction, locate and mark all existing circuits and utilities in the area of new construction with paint or flagging throughout the area.
The Contractor is entirely responsible for location and identifying existing underground cables and equipment. Do not, under any circumstances, deliberately plow, trench or work across existing utilities for the sole purpose of locating cables. Cable, utilities and equipment that is cut or damaged, and is not designated for replacement shall be replaced at the Contractors expense in its entirety. -apply paint or re-flag as
needed.
101-2.2 Obtain megger test readings of all airport circuits that will be encountered during construction, including those crossed by haul routes or access roads, shall be taken in the presence of the Owner and the Engineer. If the Contractor notes problems in the existing circuits prior to starting Work, these circuits may be repaired by the owner or noted to the mutual satisfaction of the Contractor and the Owner as not being the responsibility of the Contractor. Test circuits repaired by the Owner once again prior to construction. 101-2.3 Upon completion of construction, in the presence of the Owner and the Engineer, megger test all airport circuits encountered during construction. Repair all portions of circuits that have been damaged during construction. Damaged circuits are any circuit with a lower megger reading than prior to construction.
101-2.4 The excavation, cutting, removal, and reinstallation of existing cables as required in the Contract Documents shall be incidental to this Pay I -site representative must remain in communication with the Engineer until such repairs are completed and the lighting system has been checked for operation and accepted by the Owner.
METHOD OF MEASUREMENT
101-3.1 Locate and protect existing Airfield Electrical will be measured for payment as a complete unit per Lump Sum.
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BASIS OF PAYMENT
101-4.1 Payment will be made at the Contract Lump Sum price for Locate and Protect Existing Airfield Electrical and will be full compensation for furnishing al materials for locating, protecting, and testing existing circuits and for all labor, equipment, tools, and incidentals necessary to complete this Pay Item as required.
Standard Pay Items for Work covered by this Specification are as follows:
Item NS-101 Locate and Protect Existing Airfield Electrical - per Lump Sum END OF ITEM NS-101
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Ukiah Municipal Airport Item NS-110 Directional Boring
Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
ITEM NS-110 DIRECTIONAL BORING
DESCRIPTION
110-1.1 Work under this section shall require the contractor to install pipeline by the directional boring method.
110-1.2 Directional boring shall be defined as the ability to steer and electronically monitor the location and depth of the cutting bit.
110-1.3 Boring accuracy shall be within six (6) inches. 110-1.4 Mechanical, pneumatic or water-jetting methods will not be considered or paid for as directional boring.
MATERIALS
110-2.1 Materials are defined as pipe or conduit that becomes the installed product. 110-2.2 Use materials that are appropriate for the stresses generated by the selected equipment and field conditions but shall not be less than 2-inch high density polyethylene pipe with dimension ratio of SDR 9. 110-2.3 Ensure that the appropriate material is used to retain compliance once it is installed.
CONSTRUCTION METHODS
110-3.1 The contractor shall provide work reference for whom similar work has been conducted. A minimum of five-year directional boring experience is required. A contact name and telephone number are required for each reference.
110-3.2 Maintain drilling logs that accurately provide drill bit location (horizontally and vertically) at least six (6) inch along the drill path. In addition, keep logs that record, as a minimum the following, every 15 minutes throughout each drill pass, back ream, or pipe installation:
a. Drilling Fluid Pressure
b. Drilling Fluid Flow Rate
c. Drilling Thrust Pressure
d. Drilling Pullback Pressure
e. Drilling Head Torque
Make all instrumentation, readings, and logs available to the Engineer at all times during operation and provide a copy to the Engineer after installation is complete. 110-3.3 Boring shall be performed by a fluid-cutting process utilizing a liquid clay/Bentonite. 110-3.4 The liquid clay shall maintain boring stability and provide lubrication while the pipe is being installed:
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a. Liquid clay must be totally inert and contain no environmental risk. 110-3.5 After an initial bore hole is completed, a reamer shall be installed at the termination pit and the reamer with the pipe shall be pulled back to the starting pit. 110-3.6 The reamer shall be capable of discharging liquid clay to facilitate the installation of the pipe into a stabilized and lubricated boring.
110-3.7 The timing of all boring processes is critical. Install a product into a borehole within the same day that the pre-bore is completed to ensure necessary support exits. 110-3.8 Sump pits are required to contain drilling fluids if vacuum devices are not operated throughout the drilling operation, unless approved by the engineer. Upon completion of the boring and pipe installation, the contractor shall remove all spoils from the boring pits and restore the pits and all areas disturbed by the boring operation to their original condition. All drilling spoils and excess material shall be removed and disposed of off-site in accordance with local, state, and federal regulations and required permitting. Offsite disposal of spoils and excess material is incidental and shall not be paid for separately. 110-3.9 Ensure that entry and exit pits are of sufficient size to contain the expected return of drilling fluids and soil cuttings. Ensure that all drilling fluids are disposed of or recycled in a manner acceptable to the appropriate local, state or federal regulatory agencies. 110-3.10 When drilling in suspected contaminated ground, test the drilling fluid for contamination and appropriately dispose of it at an offsite location in accordance with local, state, and federal regulations.
Remove any excess material upon completion of the bore and dispose of offsite. If in the drilling process it becomes evident that the soil is contaminated, contact the Engineer immediately. Do not continue drilling without the Engineer's approval.
110-3.11 Pipe tie-ins shall not be made for a minimum of twenty-four (24) hours after the pull to allow the pipe to recover from the pulling stress.
110-3.12 The contractor shall be responsible for repairing any damage resulting in heaving, settlement, separation of pavement, escaping drilling fluid (frac-out), or any other damage caused by the drilling operation, at no cost to the airport.
110-3.13 When required by the Engineer, provide detailed plans which show how damage to any runway or taxiway pavement will be remedied. When remediation plans are required, they must be approved by the engineer before any work proceeds.
110-3.14 If an obstruction is encountered during boring which prevents completion of the installation in accordance with the design location and specification, the pipe may be taken out of service and left in place at the discretion of the Engineer. Immediately fill the product left in place with excavatable flowable fill.
Submit a new installation procedure and revised plans to the engineer for approval before resuming work at another location. If damage is observed to an existing airport facility, cease all work until resolution to minimize further damage and a plan of action for restoration is obtained and approved by the Engineer.
METHOD OF MEASUREMENT AND BASIS OF PAYMENT
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Ukiah Municipal Airport Item NS-110 Directional Boring
Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
110-4.1 Measurement for directional boring of a pipeline shall be made along the center of the pipeline after the boring is completed and the pipe is cut to its finished length. No allowances will be made for additional pipe needed to perform the boring operation. No additional allowances will be made for additional bores required to perform this work.
110-4.2 The basis of payment shall be by the linear foot and shall include:
a. Labor, material and equipment
b. Boring pits
c. Drilling fluid/pulling lubricant
d. Removal and disposal of drilling spoils, offsite
e. Backfilling and compacting boring pits
f. Restoring and landscaping all areas disturbed by the boring operation 110-4.3 Payment shall be made under:
Item No. NS-110.1 Directional Bore 2W-2 HDPE - per linear foot Item No. NS-110.2 Directional Bore 2W-4 - per linear foot END OF ITEM NS-110
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Ukiah Municipal Airport Item NS-110 Directional Boring
Ukiah, California Runway 15-33 Pavement Rehabilitation Phase 2 AIP No. 3-06-0268-0xx-20xx 100% Submittal
Page Intentionally Blank
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Ukiah Municipal Airport Construction Details
Ukiah, California Runway 15-33 Pavement Rehabilitation, Phase 2 AIP No. 3-06-0268-0XX-20XX 100% Submittal
Section 5
Supplemental Documents
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21 W. 4th S tree t, Eureka, Ca l ifo rnia 9550 1 707 443-50 54 Fax 707 443- 0553 311 S. Ma in Stre e t, Ukiah , Ca l ifo rnia 9 5482 7 07 4 62-022 2 F ax 707 462-0 223 3450 R e giona l P arkw ay , S u ite B 2, Santa Ro sa, Cal ifornia 954 03 707 525- 1222 To ll Fre e 800 5 15- 5054 www .laco asso c iate s.com
TECHNICAL MEMORANDUM
Geotechnical Exploration
Runway Rehabilitation Project
Ukiah Airport
Ukiah, California
Date: October 19, 2017
Project No.: 7403.05
Prepared For: Mead & Hunt
1360 19th Hole Drive, Suite 200
Windsor, California
Prepared By: Robert Voeks, E.I.T., G.I.T.
Staff Geologist
Reviewed By: J. Erich Rauber, P.E., G.E.
Senior Geotechnical Engineer
Attachments: Figures: Figure 1 Site Vicinity Map
Figure 2 Site Plan
Appendix 1: Boring Logs
Appendix 2: Laboratory Test Results
1 . 0 I N T R O D U C T I O N
This memorandum presents the results of a geotechnical exploration performed by LACO Associates (LACO) for the planned rehabilitation and taxiway realignment of Runway 15-33 at the Ukiah Airport in Ukiah, California (the Runway). A Site Vicinity Map and Site Map are presented in Figures 1 and 2 respectively.
The rehabilitation and taxiway realignment effort will consist of reducing the width of 4,415 foot long runway from 150 feet to 75 feet, demolishing taxiways B and D, constructing new taxiways A2 and A4.
Rehabilitation is anticipated to consist of cold-in-place recycling with a 2-inch asphalt top lift. The import of additional aggregate base (AB) material to supplement the recycled material may be required depending on the existing structural section.
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TECHNICAL MEMORANDUM
Geotechnical Exploration
Runway Rehabilitation Project
Project No. 7403.05; October 19, 2017
scope of services was limited to performing a subsurface investigation, laboratory testing, engineering evaluations, and preparing a report that summarized the results of our services. 2 . 0 F I E L D E X P L O R AT I O N
On May 1, 2017, LACO explored subsurface conditions along the Runway by drilling ten test borings (B1- B10), 4.5 to 6 feet deep, at the approximate locations shown in Figure 2. Test borings were drilled by Pearson Drilling of Forestville, California, using a drill rig equipped with an 8-inch diameter solid flight auger.
A LACO geologist logged the soils in general accordance with the American Society for Testing and Materials (ASTM) Test Procedure D2488, and obtained both disturbed and relatively undisturbed soil samples for laboratory testing. Boring logs are presented in Appendix 1. Composite samples were collected from the following: B2 at 1.5 to 6 feet, B6 at 1.5 to 6 feet, B8 from 1 to 5 feet, and B10 from 1 to 5 feet.
Soil samples Santa Rosa, California, where they
were observed to confirm field classifications and to select samples for laboratory testing. The following laboratory tests were performed on selected soil samples; test results are presented in Appendix 2.
Moisture Content and Unit Weight (ATSM D2216 and 2937); Particle Size Analysis (ASTM D422);
Atterberg Limits (ASTM D4318);
Maximum Density of Soil using Standard Effort (ASTM D-698); and California Bearing Ratio (ASTM D1883).
California Bearing Ratio (CBR) tests were performed on the four composite samples to provide the necessary bearing ratio for pavement design. CBR tests performed on composite samples from borings B2 and B6 were compacted in the CBR mold to match the in-place densities derived from unit weight test results. This was performed to assess the bearing ratio of the in-situ soils for consideration of not reworking the subgrade soils. CBR tests performed on composite samples from B8 and B10 were compacted to approximately 95% relative compaction from the maximum dry density using standard effort (ASTM D698) test results.
3 . 0 R E S U L T S
3.1.1 Surface Conditions
Runway 15-33 is 4,415 feet long, 150 feet wide, asphalt concrete (AC) paved, and oriented in the northwest direction. The ground surface slopes gently in a southeast direction with elevations ranging from 615 to 593 feet above mean sea level.
3.1.2 Subsurface Conditions
Site Geology
The site is located on the west side of the Russian River Valley, in the Mendocino Mountain Range which forms part of the Coast Ranges Geomorphic Province of Northern California (CGS, 2006). According to 279