Ukiah City Council
March 15, 2023

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3.05 PLACING AND COMPACTING
A. Placing:

1. Placing of all concrete shall be in accordance with the recommendations contained in ACI 304R.

2. Verify that all formwork completely encloses concrete to be placed and is securely braced before concrete placement. Remove ice, excess water, dirt, and other foreign materials from forms. Confirm that reinforcement and other embedded items are securely in place. Have a competent worker at the location of the placement that can assure that reinforcing steel and embedded items remain in designated locations while concrete is being placed. Sprinkle semi-porous sub grades or forms to eliminate suction of water from the mix. Seal extremely porous sub grades in an approved manner.

3. Deposit concrete as near to its final position as possible to avoid segregation due to rehandling or flowing. Place concrete continuously at a rate that ensures the concrete is being integrated with fresh plastic concrete. Do not deposit concrete that has partially hardened or has been contaminated by foreign materials or on concrete that has hardened sufficiently to cause formation of seams or planes of weakness within the section. If the section cannot be placed continuously, place construction joints as specified or as approved.

4. Pumping of concrete will be permitted. Use a mix design and aggregate sizes suitable for pumping and submit for approval.

5. Remove temporary spreaders from forms when the spreader is no longer useful.

Temporary spreaders may remain embedded in concrete only when made of galvanized metal or concrete and if prior approval has been obtained.

6. Do not place concrete for supported elements until concrete previously placed in the supporting element (columns, slabs, and/or walls) has reached adequate strength.

B. Slabs:

1. After suitable bulkheads, screeds, and jointing materials have been positioned, the concrete shall be placed continuously between construction joints beginning at a bulkhead, edge form, or corner. Each batch shall be placed into the edge of the previously placed concrete to avoid stone pockets and segregation.

2. Avoid delays in casting. If there is a delay in casting, the concrete placed after the delay shall be thoroughly spaded and consolidated at the edge of that previously placed to avoid cold joints. Concrete shall then be brought to correct level and struck off with a straightedge. Bullfloats or darbies shall be used to smooth the surface, leaving it free of humps or hollows.

3. "Jitterbugs" shall not be used on slab surfaces to aid in finishing.

4. Where slabs are to be placed integrally with the walls below them, place the walls and compact as specified. Allow 1 hour to pass between placement of the wall and the overlying slab to permit consolidation of the wall concrete. Keep the top surface of the wall moist so as to prevent cold joints.

C. Formed Concrete:

1. Place concrete in forms using tremie tubes and taking care to prevent segregation.

Bottom of tremie tubes shall preferably be in contact with the concrete already placed. Do not permit concrete to drop freely more than 4 feet. Place concrete for walls in 12- to 24-inch lifts, keeping the surface horizontal. If plasticized concrete is used, the maximum lift thickness may be increased to 7 feet and the maximum free fall of concrete shall not exceed 15 feet.

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D. Compacting:

1. Consolidate concrete by vibration, puddling, spading, rodding, or forking so that concrete is thoroughly worked around reinforcement, embedded items, and openings, and into corners of forms. Puddling, spading, etc. shall be continuously performed along with vibration of the placement to eliminate air or stone pockets that may cause honeycombing, pitting, or planes of weakness.

2. All concrete shall be placed and compacted with mechanical vibrators. The number, type, and size of the units shall be approved by the ENGINEER in advance of placing operations. No concrete shall be ordered until sufficient approved vibrators (including standby units in working order) are on the job site.

3. A minimum frequency of 7,000 revolutions per minute is required for mechanical vibrators. Insert and withdraw vibrators vertically at points from 18 to 30 inches apart. At each insertion, vibrate sufficiently to consolidate concrete, generally from 5 to 15 seconds. Do not over-vibrate so as to segregate. Keep a spare vibrator on the site during concrete placing operations.

4. Concrete Slabs - Concrete for slabs less than 8 inches thick shall be consolidated with vibrating screeds; slabs 8 to 12 inches thick shall be compacted with internal vibrators and (optionally) with vibrating screeds. Vibrators shall always be placed into concrete vertically and shall not be laid horizontally or laid over.

5. Walls - Internal vibrators (rather than form vibrators) shall be used unless otherwise approved by the ENGINEER. In general, for each vibrator needed to melt down the batch at the point of discharge, one or more additional vibrators must be used to densify, homogenize, and perfect the surface. The vibrators shall be inserted vertically at regular intervals, through the fresh concrete and slightly into the previous lift, if any.

6. Amount of Vibration - Vibrators are to be used to consolidate properly placed concrete but shall not be used to move or transport concrete in the forms. Vibration shall continue until the following conditions are met:
a. The frequency returns to normal.
b. The surface appears liquefied, flattened, and glistening. c. Trapped air ceases to rise.
d. Coarse aggregate has blended into the surface, but has not disappeared.

3.06 CURING AND PROTECTION
A. Protect all concrete work against injury from the elements and defacements of any nature during construction operations.

B. Curing Methods:

1. Curing Methods for Concrete Surfaces - Cure concrete to retain moisture and maintain specified temperature at the surface for a minimum of 7 days after placement. Curing methods to be used are as follows:
a. Water Curing – Keep entire concrete surface wet by ponding, continuous sprinkling, or covering with saturated burlap. Begin wet cure as soon as concrete attains an initial set and maintain wet cure 24 hours a day. b. Sheet Material Curing – Cover entire surface with sheet material. Securely anchor sheeting to prevent wind and air from lifting the sheeting or entrapping air under the sheet. Place and secure sheet as soon as initial concrete set occurs.
c. Liquid Membrane Curing – Apply curing compound over the entire concrete surface except for surfaces to receive additional concrete. Curing

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compound shall NOT be placed on any concrete surface where additional concrete is to be placed, where concrete sealers or surface coatings are to be used, or where the concrete finish requires an integral floor product.

Curing compound shall be applied as soon as the free water on the surface has disappeared and no water sheen is visible, but not after the concrete is dry or when the curing compound can be absorbed into the concrete.

Application shall be in compliance with the manufacturer's recommendations.

C. Specified Applications of Curing Methods:

1. Slabs on Grade and Footings – Water curing, sheet material curing, or liquid membrane curing shall be used.

2. Structural Slabs – Water curing or liquid membrane curing shall be used.

3. Horizontal Surfaces that will Receive Additional Concrete, Coatings, Grout or Other Material that Requires Bond to the substrate – Water curing shall be used.

4. Formed Surfaces – No curing shall be used if nonabsorbent forms are left in place 7 days. Water curing shall be used if absorbent forms are used. Sheet curing or liquid membrane curing shall be used if forms are removed before 7 days. Exposed horizontal surfaces of formed walls or columns shall be water cured for 7 days or until next placement of concrete is made.

5. Concrete Joints – Water curing or sheet material curing shall be used.

D. Finished surfaces and slabs shall be protected from the direct rays of the sun to prevent checking and crazing.

3.07 REMOVAL OF FORMS
A. Except as otherwise specifically approved by the ENGINEER, forms shall not be removed before the concrete has attained a strength of at least 30 percent of its specified design strength, nor before reaching 100 degree days of curing for walls and vertical surfaces, and 500 degree days of curing for beams and slabs, (whichever is the longer). Degree days are defined as the total number of 24-hour periods multiplied by the weighted average daily air temperature at the surface of the concrete (e.g., 5 days at an average 70 degrees F = 350 degree days).

B. Shores shall not be removed until the concrete has attained at least 60 percent of its specified design strength and also sufficient strength to support safely its own weight and construction live loads.

3.08 INSPECTION AND FIELD TESTING
A. The batching, mixing, transporting, placing, and curing of concrete shall be subject to the inspection of the ENGINEER at all times. The CONTRACTOR shall advise the ENGINEER of their readiness to proceed at least 24 hours before each concrete placement. The ENGINEER will inspect the preparations for concreting including the preparation of previously placed concrete, the reinforcing steel and the alignment, and the cleanliness and tightness of formwork. No placement shall be made without the inspection and acceptance of the ENGINEER.

B. Sets of field control cylinder specimens will be taken by an independent entity paid for by the DISTRICT during the progress of the work, in compliance with ASTM C31. The number of sets of concrete test cylinders taken of each class of concrete placed each day shall not be less than one set per day, nor less than one set for each 150 cubic yards of concrete, nor less than one set for each 3,000 square feet of surface area for slabs or walls. If the total volume of concrete were such that the frequency of testing required for a given class of concrete would provide less than five strength tests, tests shall be made from at least

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five randomly selected batches or from each batch if fewer than five batches are anticipated.

C. A "set" of test cylinders consists of six 6”x12” cylinders: two to be tested at 7 days and two to be tested and their strengths averaged at 28 days. The final two may be used for a special test at 3 days or to verify strength after 28 days if 28-day test results are low. A copy of all concrete test results shall be provided to the DISTRICT for review.

D. When the average 28-day compressive strength of the cylinders in any set falls below the specified design strength or below proportional minimum 7-day strengths (where the proper relationships between 7- and 28-day strengths have been established by tests), proportions, water content, or temperature conditions shall be changed to achieve the required strengths.

E. The CONTRACTOR shall cooperate in the making of tests by allowing free access to the work for the selection of samples; providing an insulated, closed curing box for specimens; affording protection to the specimens against injury or loss through the operations; and furnishing material and labor required for the purpose of taking concrete cylinder samples.

All shipping of specimens will be paid for by the DISTRICT. Curing boxes shall be acceptable to the ENGINEER.

F. Concrete Slump:

1. Slump tests will be made in the field immediately before placing the concrete by an independent entity paid for by the DISTRICT. Such tests shall be made in accordance with ASTM C143. If the slump is greater than the specified range, the concrete shall be rejected.

2. At a minimum the first three trucks shall be tested to establish consistency.

Additionally, testing will be performed with each strength test (cylinders) and each air content test.

3. The ENGINEER reserves the right to increase the frequency of testing when deemed necessary.

G. Air Content:

1. Testing for air content shall be performed on a fresh concrete sample by an independent entity paid for by the DISTRICT. Air content testing for concrete made of ordinary aggregates having low absorption shall be performed in compliance with either the pressure method complying with ASTM C231 or by the volumetric method complying with ASTM C173. If lightweight aggregates or aggregates with high absorptions are used, the latter test method shall be used. If air content is below the specified air-entrainment range listed in Table 1, air-entraining admixture may be added on-site to bring the concrete within specifications. If air content is above the specified air-entrainment range, the concrete shall be rejected.

2. At a minimum, the first three trucks shall be tested to establish consistency, then every third truck thereafter. Additionally, an air content test shall be performed with each strength test (cylinders). Concrete samples for the testing of air content shall be taken at the point of placement and not at the truck chute/hopper.

3. The ENGINEER reserves the right to increase the frequency of testing when deemed necessary.

H. The ENGINEER may have cores taken from any questionable area in the concrete work such as construction joints and other locations as required for determination of concrete quality. The results of tests on such cores shall be the basis for acceptance, rejection, or determining the continuation of concrete work.

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I. The CONTRACTOR shall cooperate in obtaining cores by allowing free access to the work and permitting the use of ladders, scaffolding, and such incidental equipment as may be required. Repair all core holes. The work of cutting and testing the cores will be at the expense of the DISTRICT.

3.09 FAILURE TO MEET REQUIREMENTS
A. Should the strengths shown by test specimens made and tested in compliance with the previous provisions fall below the values given in Table 1, the ENGINEER shall have the right to require changes in proportions outlined to apply to the remainder of the work.

Furthermore, the ENGINEER shall have the right to require additional curing on those portions of the structure represented by the test specimens that failed. The cost of such additional curing shall be at the CONTRACTOR's expense. In the event that such additional curing does not give the strength required, as evidenced by core and/or load tests, the ENGINEER shall have the right to require strengthening or replacement of those portions of the structure that fail to develop the required strength. The cost of all such core borings and/or load tests, and any strengthening or concrete replacement required because strengths of test specimens are below that specified, shall be entirely at the expense of the CONTRACTOR. In such cases of failure to meet strength requirements, the CONTRACTOR and ENGINEER shall confer to determine what adjustment, if any, can be made in compliance with Sections titled "Strength" and "Failure to Meet Strength Requirements" of ASTM C94. The "purchaser" referred to in ASTM C94 is the CONTRACTOR in this Section.

B. When the tests on field control specimens of concrete fall below the specified strength, the ENGINEER will permit check tests for strengths to be made by means of typical cores drilled from the structure in compliance with ASTM C42 and C39. In the case of cores not indicating adequate strength, the ENGINEER, in addition to other recourses, may require, at the CONTRACTOR's expense, load tests on any one of the elements in which such concrete was used. Tests need not be made until concrete has aged 60 days.

C. Should the strength of test cylinders fall below 60 percent of the required minimum 28-day strength, the concrete shall be rejected and shall be removed and replaced.

3.10 PATCHING AND REPAIRING
A. It is the intent of this Section to require quality work including adequate forming, proper mixture and placement of concrete, and curing, so completed concrete surfaces will require no patching.

B. Defective concrete and honeycombed areas shall be repaired as directed by the ENGINEER.

C. As soon as forms have been removed and the concrete surfaces exposed, fins and other projections shall be removed. All exposed surfaces shall be carefully examined and any irregularities shall be immediately rubbed or ground in a satisfactory manner in order to secure a smooth, uniform, and continuous surface. Plastering or coating of surfaces to be smoothed will not be permitted. No repairs shall be made until after inspection by the ENGINEER. In no case will extensive patching of honeycombed concrete be permitted.

Concrete containing minor voids, holes, honeycombing, or similar depression defects shall be repaired as specified herein. Concrete containing extensive voids, holes, honeycombing, or similar depression defects shall be completely removed and replaced.

The CONTRACTOR, at their own expense, shall promptly execute all repairs and replacements herein specified.

D. Defective surfaces to be repaired as specified in Paragraph C shall be cut back from true line a minimum depth of 1/2 inch over the entire area. Feathered edges will not be permitted. Where chipping or cutting tools are not required in order to deepen the area properly, the surface shall be prepared for bonding by the removal of all laitance or soft

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material and not less than 1/32-inch depth of the surface film from all hard portions, by means of an efficient sandblast. After cutting and sandblasting, the surface shall be wetted sufficiently in advance of shooting with shotcrete or with cement mortar so that while the repair material is being applied, the surfaces under repair will remain moist, but not so wet as to overcome the suction upon which a good bond depends. The material used for the repair proposed shall contain such proportion of Atlas White Portland Cement as is required to make the color of the patch match the color of the surrounding concrete.

E. Recesses left by the removal of form ties shall be filled. Immediately after removal of forms, remove plugs and break off metal ties as required by Section 03 10 00. Promptly fill holes upon stripping as follows: moisten the hole with water, followed by a 1/16-inch brush coat of neat cement slurry mixed to the consistency of a heavy paste. Immediately plug the hole with a 1 to 1.5 mixture of cement and concrete sand mixed slightly damp to the touch (just short of "balling"). Hammer the grout into the hole until dense and an excess of paste appears on the surface in the form of a spider web. Trowel smooth with heavy pressure.

Avoid burnishing.

F. Surface defects that do not impair structural strength shall be repaired. When patching exposed surfaces the same source of cement and sand as used in the parent concrete shall be employed. Adjust color if necessary by addition of proper amounts of white cement.

Rub lightly with fine Carborundum stone at an age of 1 to 5 days if necessary to bring the surface down to flush with the parent concrete. Exercise care to avoid damaging or staining the virgin skin of the surrounding parent concrete. Wash thoroughly to remove all rubbed matter.

G. Clean all exposed concrete surfaces and adjoining work stained by leakage of concrete.

3.11 EMBEDMENT OF CONDUIT AND PIPES IN CONCRETE
A. Conduit, pipes, and sleeves of any material not harmful to concrete and within limitations of the Contract Drawings and Specifications and ACI 318 shall be permitted to be embedded in concrete with the prior approval of the ENGINEER, provided they are not considered by the ENGINEER to displace structural concrete, except as provided herein.

B. Conduit and pipes of aluminum shall not be embedded in structural concrete.

C. Conduit and pipes, with their fittings, embedded within a column shall not displace more than four percent of the area of the cross section on which the strength is calculated or which is required for fire protection. The ENGINEER shall determine whether the strength of the construction has been significantly impaired.

D. Conduits and pipes embedded within a slab, wall, or beam shall satisfy the following:

1. They shall not be larger in outside dimension than 2 inches.

2. Minimum center-to-center spacing between conduit and/or pipe runs shall be 3 times outside diameter or width.

3. They shall be located in such a manner as to maintain a minimum of 1 inch of clear space between the embedded item and primary reinforcing.

4. They shall not significantly impair the strength of the construction. The ENGINEER shall determine whether the strength of the construction has been significantly impaired.

E. No liquids, gas, or vapor, except water not exceeding 90 degrees Fahrenheit or 50-psi pressure, shall be placed in the pipes until the concrete has attained its design strength.

F. In solid slabs, conduits and/or pipes shall be placed between the top and bottom reinforcement at the centerline of the slab. At a minimum, they shall be located in such a manner as to maintain a minimum of 1 inch of clear space between the embedded item and primary reinforcing.

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G. Concrete cover for pipes shall be not less than 1 1/2 inches for concrete exposed to earth or weather, nor less than 3/4 inch for concrete not exposed to weather or in contact with the ground.

H. Additional reinforcement with an area not less than 0.002 times the area of concrete section shall be provided normal to the conduit and/or pipe.

I. Conduits and/or piping shall be so fabricated and installed that cutting, bending, or displacement of reinforcement from its proper location will not be required.

3.12 SCHEDULE
A. Table 3 lists the general applications for the various concrete classes and design strengths.

Table 3
Concrete Schedule
Class
Design Compressive
Strength at 28 days
(psi)
Description
A 2,500 Concrete fill and duct encasement
B 3,000 Concrete overlay slabs and pavements
C N/A Not used
D 4,500 Walls, slabs on grade, suspended slab and beam
systems, columns, grade beams, pile caps and all
other structural concrete

END OF SECTION

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SECTION 03366

TOOLED CONCRETE FINISHES
PART 1 - GENERAL

1.01 WORK INCLUDED
A. Furnish all labor, materials, equipment and incidentals required to finish cast-in-place concrete surfaces as shown on the Drawings and as specified herein.

1.02 RELATED WORK
A. Related Work Specified Elsewhere

1. Section 03100 - Concrete Formwork

2. Section 03150 - Concrete Joints and Joint Accessories

3. Section 03300 - Cast-in-Place Concrete

4. Section 03600 - Grout

5. Section 03740 - Modifications and Repair to Concrete

6. Moisture Protection is included in Division 7.

1.03 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. American Society for Testing and Materials (ASTM)

1. ASTM C33 - Standard Specification for Concrete Aggregates

2. ASTM C309 - Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete

3. ASTM C779 - Standard Test Method for Abrasion Resistance of Horizontal Concrete
B. Where reference is made to one of the above standards, the revision in effect at the time of bid opening shall apply.

1.04 SUBMITTALS
A. Submit to the ENGINEER, in accordance with Division 1, product data showing materials of construction and details of application for the following:

1. Concrete Sealer - Submit product data including catalogue cuts, technical data, storage requirements, product life, working time after mixing, temperature considerations, conformity to required ASTM standards, and Material Safety Data Sheet. Confirmation that the sealer is compatible with additionally applied coatings shall also be submitted.

2. Concrete Hardener - Submit product data including catalogue cuts, technical data, storage requirements, product life, application requirements, conformity to required ASTM standards, and Material Safety Data Sheet.

1.05 QUALITY ASSURANCE
A. Finish:

1. For concrete that will receive additional applied finishes or materials, the surface finish specified is required for the proper application of the specified manufacturer’s

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products. Where alternate products are approved for use, determine if changes in finish are required and provide the proper finish to receive these products.

2. Changes in finish made to accommodate products different from those specified shall be performed at no additional cost to the OWNER. Submit the proposed new finish and their construction methods to the ENGINEER for approval.

B. Services of Manufacturer's Representative:

1. The CONTRACTOR shall make available, at no additional cost to the OWNER, upon 72 hours notification, the services of a qualified field representative of the manufacturer of the curing compound, sealer, or hardener to instruct the user on the proper application of the product under the prevailing job conditions.

PART 2 - PRODUCTS

2.01 GENERAL
A. The use of a manufacturer's name and model or catalog number is for the purpose of establishing the standard of quality and general configuration desired.

2.02 MATERIALS
A. Concrete sealer shall comply with ASTM C309, Type 1, Class A or B. Concrete sealer must also be compliant with State of California VOC regulations. Concrete sealer shall be Spartan Cote WB II by Edoco (Burke), Kure-N-Seal WB by BASF Building Systems (Sonneborn), or equal.

B. Concrete Hardener must be compliant with State of California VOC regulations. Concrete hardener shall be Mastertop 100 by BASF Building Systems, Burke Nonmetallic Hardener by Edoco (Burke), or equal.

PART 3 - EXECUTION

3.01 FORMED SURFACES
A. Forms shall not be removed before the requirements of Section 03300 have been satisfied.

B. Exercise care to prevent damaging edges or obliterating the lines of chamfers, rustications, or corners when removing the forms or performing any other work adjacent thereto.

C. Clean all exposed concrete surfaces and adjoining work stained by leakage of concrete.

D. Rough-Formed Surfaces:

1. Immediately after stripping forms and before concrete has changed color, carefully remove all fins and projections.

2. Promptly fill holes left by tie cones and defects as specified in Section 03300.

E. Rubbed Finish:

1. Immediately upon stripping forms and before concrete has changed color, carefully remove all fins. While the wall is still damp apply a thin coat of medium-consistency neat cement slurry by means of bristle brushes to provide a bonding coat within all pits, air holes, or blemishes in the parent concrete. Avoid coating large areas with slurry at one time.

2. Before slurry has dried or changed color, apply a dry (almost crumbly) grout proportioned by volume and consisting of 1 part cement to 1 1/2 parts of clean masonry sand having a fineness modulus of approximately 2.3 and complying with the gradation requirements of ASTM C33 for such a material. Grout shall be uniformly applied by means of damp pads of coarse burlap approximately 6 inches

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square used as a float. Scrub grout into the pits and air holes to provide dense mortar in all imperfections.

3. Allow the mortar to partially harden for 1 or 2 hours depending upon the weather and ambient temperature. If the air is hot and dry, keep the wall damp during this period using a fine fog spray. When the grout is hardened sufficiently so it can be scraped from the surface with the edge of a steel trowel without damaging the grout in the small pits or holes, cut off all that can be removed with a trowel. (Caution: Grout allowed to remain on the wall too long will harden and will be difficult to remove).

4. Allow the surface to dry thoroughly and rub it vigorously with clean, dry burlap to completely remove any dried grout. No visible film of grout shall remain after this rubbing. The entire cleaning operation for any area must be completed the day it is started. Do not leave grout on surfaces overnight. Allow sufficient time for grout to dry after it has been cut off with the trowel so it can be wiped off clean with the burlap.

5. On the day following the repair of pits, air holes, and blemishes, the walls shall again be wiped clean with dry, used pieces of burlap containing old, hardened mortar, which will act as a mild abrasive. After this treatment, there shall be no built-up film remaining in the parent surface. If, however, such a film is present, a fine abrasive stone shall be used to remove all such material without breaking through the surface film of the original concrete. Such scrubbing shall be light and sufficient only to remove excess material without changing the texture of the concrete.

6. A thorough wash-down with stiff bristle brushes shall follow the final bagging or stoning operations. No extraneous materials shall remain on the surface of the wall. The wall shall be sprayed with a fine fog spray periodically to maintain a continually damp condition for at least 3 days after application of the repair grout.

F. Abrasive Blast Finish:

1. Coordinate with Rubbed Finish application. Do not begin until Rubbed Finish operation is complete or before concrete has reached minimum 7-day strength.

The Rubbed Finish application may be deleted by the ENGINEER if the unfinished concrete surface is of superior quality. Apply the abrasive blast finish only where indicated on Drawings.

2. Prepare a sample area of minimum 4 feet high by 16 feet wide and blast Finish as directed by ENGINEER on a portion of new wall construction that will not be exposed in the final work. The sample area shall contain a variety of finishes obtained with different nozzles, nozzle pressures, grit materials, and blasting techniques for selection by ENGINEER. The final accepted sample shall remain exposed until completion of all blast finish operations.

3. The blast finish operation shall meet all regulatory agency requirements. The blast finish CONTRACTOR shall be responsible for obtaining all required permits and/or licenses.

4. Perform abrasive blast finishing in as continuous an operation as possible, utilizing the same work crew to maintain continuity of finish on each surface or area of work.

Maintain patterns or variances in depths of blast as present on the accepted sample.

5. Use an abrasive grit of proper type and gradation as well as equipment and technique to expose aggregate and surrounding matrix surfaces as follows:
a. Medium: Generally expose coarse aggregate - 1/4-inch to 3/8-inch reveal.

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6. Abrasive blast corners and edge of patterns carefully, using back-up boards, to maintain uniform corner or edge line. Determine type of nozzle, nozzle pressure, and blasting techniques required to match Architect’s samples.

7. Upon completion of the blast finish operation, thoroughly flush finished surfaces with clean, clear water to remove residual dust and grit. Allow to air dry until curing of concrete is complete.

3.02 FLOORS AND SLABS
A. Machine Float:

1. Screed floors and slabs with straightedges to the established grades shown on the Drawings. Immediately after final screeding, a dry cement/sand shake in proportion of two sacks of Portland cement to 350 pounds of coarse natural concrete sand shall be broadcast evenly over the surface at a rate approximately equal to 500 pounds per 1,000 square feet of floor area. Do not sprinkle neat, dry, cement on the surface.

2. The application of the cement/sand shake may be eliminated at the discretion of the ENGINEER if the base slab concrete exhibits adequate fattiness and homogeneity and the need is not indicated.

3. When the concrete has hardened sufficiently to support the weight of a power float without it digging into or disrupting the level surface, thoroughly float the shake into the surface with a heavy revolving disc type power compacting machine capable of providing 200-pound compaction force distributed over a 24-inch-diameter disc.

4. Start floating along the walls and around columns and then move systematically across the surface, leaving a matte finish.

5. The compacting machine shall be a "Kelley Power Float with Compaction Control" as manufactured by Kelly Industries, or equal. Troweling machines equipped with float (shoes) blades that are slipped over the trowel blades may be used for floating. Floating with a troweling machine equipped with normal trowel blades will not be permitted. The use of any floating or troweling machine that has water attachments for wetting the concrete surface during finishing will not be permitted.

B. Hand Float:

1. In lieu of power floating, small areas may be compacted by hand floating. The dry cement/sand shake previously specified shall be used unless specifically eliminated by the ENGINEER. Screed the floors and slabs with straightedge to the established grades shown on the Drawings. While the concrete is still green, but sufficiently hardened as to support a finisher and kneeboards with no more than 1/4-inch indentation, float to a true, even plane with no coarse aggregate visible.

Use sufficient pressure on the floats to bring moisture to the surface.

C. Finishing Tolerances:

1. Level floors and slabs to a tolerance of plus or minus 1/8 inch when checked with a 10-foot straightedge placed anywhere on the slab in any direction. Where drains occur, pitch floors to drains such that there are no low spots left undrained. Failure to meet either of the above requirements shall be cause for removal, grinding, or other corrective measure as directed by the ENGINEER.

D. Broomed Finish:

1. Finish concrete as specified in Paragraph 3.2A. When the concrete has stiffened sufficiently to maintain small surface indentations, draw a bristle broom lightly across the surface in the direction of drainage, or in the case of walks and stairs, perpendicular to the direction of traffic to provide a nonslip surface.

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E. Steel Trowel Finish:

1. Finish concrete as specified in Paragraph 3.2A, then hand steel trowel to a perfectly smooth hard even finish free from high or low spots or other defects.

2. Where concrete is greater than 15 feet in each direction, the CONTRACTOR may use a power steel trowel provided a minimum of three troweling passes are made of the entire surface.

3.03 CONCRETE SEALER
A. Prepare and seal floor surfaces indicated on the Drawings as follows:

1. Finish the concrete as specified in the preceding paragraphs and in accordance with the Schedule of Finishing in Paragraph 3.6.

B. Newly Placed Concrete:

1. Surface must be sound and properly finished. Surface is application-ready when it is damp, but not wet and can no longer be marred by a walking worker.

C. Newly Cured Bare Concrete:

1. Level any spots gouged out by trades. Remove all dirt, dust, droppage, oil, grease, asphalt, and foreign matter. Cleanse with caustics and detergents as required.

Rinse thoroughly and allow to dry so that surface is no more than damp, and not wet.

D. Aged Concrete:

1. Restore surface soundness by patching, grouting, filling cracks, and holes, etc.

Surface must also be free of any dust, dirt, and other foreign matter. Use power tools and/or strippers to remove any incompatible sealers or coatings. Cleanse as required, following the procedure indicated under cured concrete.

E. Methods:

1. Comply with the manufacturer's recommendations to apply sealer so as to form a continuous, uniform film by spray, soft-bristle push broom, long-nap roller, or lamb’s wool applicator.

F. Applications:

1. Two coats are required for curing concrete. Apply the first coat evenly and uniformly as soon as possible after final finishing at the rate of 200 to 400 square feet per gallon. Apply the second coat when all trades are completed and the structure is ready for occupancy, at the rate of 400 to 600 square feet per gallon.

2. For sealing new concrete, both coats shall be applied full strength.

3. For sealing aged concrete, when renovating, dust proofing, and sealing, the first coat should be thinned 10 to 15 percent with reducer per manufacturer's directions.

3.04 CONCRETE HARDENER
A. Prepare and apply hardener to floor surfaces indicated on the Drawings as follows:

1. Finish the concrete as specified in the preceding paragraphs and in accordance with the Schedule of Finishing in Paragraph 3.6.

2. Concrete floor hardener shall be applied to green (newly placed) concrete surfaces only.

B. Methods:

1. Comply with the manufacturer's recommendations in the application of the product.

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2. Do not apply dry shake into the bleed water.

C. Applications:

1. The product shall be applied using a two-pass process ("shakes"). Using a mechanical spreader, spread approximately 1/2 to 2/3 of the required floor hardener evenly over the concrete surface.

2. If the CONTRACTOR chooses to broadcast the floor hardener by hand, in lieu of a mechanical spreader, apply each pass perpendicular to the previous application to better ensure complete coverage.

3. Apply the product in quantities prescribed for "medium duty," but not less than 100 pounds per 100 square feet.

4. Approval of Finishing
D. All concrete surfaces, when finished, will be inspected by the ENGINEER.

E. Surfaces that do not meet the requirements in this Specification shall be refinished or reworked.

F. After finishing horizontal surfaces, regardless of the finishing procedure specified, the concrete shall be cured in compliance with Section 03300, unless otherwise directed by the ENGINEER.

3.05 SCHEDULE OF FINISHING
A. Concrete shall be finished as specified either to remain as natural concrete or to receive an additional applied finish or material under another Section.

B. Concrete for the following conditions shall be finished as noted on the Drawings and as further specified herein:

1. Concrete to receive dampproofing and waterproofing: Rough-Formed Finish

2. Concrete not exposed to view and not scheduled to receive an additional applied finish or material: Rough-Formed Finish

3. Exterior vertical concrete above grade, exposed to view (except surfaces formed with a form liner): Rubbed Finish

4. Interior vertical concrete exposed to view except in water containment areas:

Rubbed Finish

5. Interior and exterior underside of concrete exposed to view: Rubbed Finish]

6. Exterior surfaces exposed to view and indicated to have an abrasive blast finish:

Abrasive Blast Finish

7. Interior or exterior horizontal concrete requiring floor hardener or sealer: See Paragraphs 3.3 and 3.4, and prepare floor in accordance with manufacturer's recommendations

8. Concrete for exterior walks, interior and exterior stairs: Broomed Finish perpendicular to direction of traffic

9. Concrete slabs on which process liquids flow or in contact with sludge: Steel Trowel Finish

END OF SECTION

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SECTION 03600
GROUT
PART 1 - GENERAL

1.01 WORK INCLUDED
A. Furnish all labor, materials, equipment and incidentals required and install grout complete as shown on the Drawings and as specified herein.

B. Perform all sampling and furnish all testing of materials and products by an independent testing laboratory acceptable to the ENGINEER but engaged by and at the expense of the CONTRACTOR.

1.02 RELATED WORK
A. Related Work Specified Elsewhere:

1. Section 03100 - Concrete Formwork

2. Section 03150 - Concrete Joints and Joint Accessories

3. Section 03200 - Concrete Reinforcement

4. Section 03300 - Cast-in-Place Concrete

5. Section 03740 - Modifications and Repair to Concrete

6. Section 05500 - Miscellaneous Metals

1.03 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. American Society for Testing and Materials (ASTM)

1. ASTM C531 - Standard Test Method for Linear Shrinkage and Coefficient of Thermal Expansion of Chemical Resistant Mortars, Grouts and Monolithic Surfacing and Polymer Concretes

2. ASTM C579 - Standard Test Method for Compressive Strength of Chemical Resistant Mortars, Grouts and Monolithic Surfacing and Polymer Concretes

3. ASTM C827 - Standard Test Method for Change in Height at Early Ages of Cylindrical Specimens of Cementitious Mixtures

4. ASTM C1107 - Standard Specification for Packaged Dry, Hydraulic-Cement Grout (Nonshrink)

5. ASTM D695 - Standard Test Method for Compressive Properties of Rigid Plastics B. US Army Corps of Engineers (CRD)

1. CRD-C 621 - Corps of Engineers Specification for Nonshrink Grout C. Where reference is made to one of the above standards, the revision in effect at the time of bid opening shall apply.

1.04 SUBMITTALS
A. Submit to the ENGINEER, in accordance with Division 1, submittals including the following:

1. Commercially Manufactured Nonshrink Cementitious Grout - Submit product data including catalogue cuts, technical data, storage requirements, product life,

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working time after mixing, temperature considerations, conformity to required ASTM standards, and Material Safety Data Sheet.

2. Commercially Manufactured Nonshrink Epoxy Grout– Submit product data including catalogue cuts, technical data, storage requirements, product life, working time after mixing, temperature considerations, conformity to required ASTM standards, and Material Safety Data Sheet.

3. Cement Grout - The submittal shall include the type and brand of the cement, the gradation of the fine aggregate, product data on any proposed admixtures, and the proposed mix of the grout.

B. Samples:

1. Submit samples of commercially manufactured grout products when requested by the ENGINEER.

2. Submit aggregates for use in concrete grout when requested by the ENGINEER.

C. Laboratory Test Reports:

1. Submit laboratory test data as required under Section 03300 for concrete to be used as concrete grout.

D. Certifications:

1. Certify that commercially manufactured grout products and concrete grout admixtures are suitable for use in contact with potable water after 30 days of curing.

2. Certify that the CONTRACTOR is not associated with the independent testing laboratory, nor does the CONTRACTOR or its officers have a beneficial interest in the laboratory.

1.05 QUALITY ASSURANCE
A. Qualifications - Grout manufacturer shall have a minimum of 10 years experience in the production and use of the type of grout proposed for the work.

B. Preinstallation Conference - Well in advance of grouting, hold a preinstallation meeting to review the requirements for surface preparation, mixing, placing, and curing procedures for each product proposed for use. Parties concerned with grouting shall be notified of the meeting at least 10 days before its scheduled date.

C. Services of Manufacturer's Representative - A qualified field technician of the nonshrink grout manufacturer, specifically trained in the installation of the products, shall attend the preinstallation conference and shall be present for the initial installation of each type of nonshrink grout. Additional services shall also be provided, as required, to correct installation problems.

D. Field Testing - The field testing of Concrete Grout shall be as specified for concrete in Section 03300.

1.06 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials to the jobsite in original, unopened packages, clearly labeled with the manufacturer's name, product identification, batch numbers, and printed instructions.

B. Store materials in full compliance with the manufacturer's recommendations. Total storage time from date of manufacture to date of installation shall be limited to 6 months or the manufacturer's recommended storage time, whichever is less.

C. Material that becomes damp or otherwise unacceptable shall be immediately removed from the site and replaced with acceptable material at no additional expense to the OWNER.

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D. Nonshrink, cement-based grouts shall be delivered as pre-blended, prepackaged mixes requiring only the addition of water.

E. Nonshrink epoxy grouts shall be delivered as pre-measured, prepackaged, threecomponent systems requiring only blending as directed by the manufacturer.

1.07 DEFINITIONS
A. Nonshrink Grout - A commercially manufactured product that does not shrink in either the plastic or hardened state, is dimensionally stable in the hardened state, and bonds to a clean baseplate.

PART 2 - PRODUCTS

2.01 GENERAL
A. The use of a manufacturer's name and model or catalog number is for the purpose of establishing the standard of quality and general configuration desired.

B. All like materials shall be the products of one manufacturer or supplier in order to provide standardization of appearance.

2.02 MATERIALS
A. Nonshrink Cementitious Grout:

1. Nonshrink cementitious grouts shall meet or exceed the requirements of ASTM C1107, Grades B or C and CRD-C 621. Grouts shall be Portland cement-based, contain a pre-proportioned blend of selected aggregates and shrinkagecompensating agents and shall require only the addition of water. Nonshrink cementitious grouts shall not contain expansive cement or metallic particles. The grouts shall exhibit no shrinkage when tested in conformity with ASTM C827. The minimum 28-day compressive strength of 5,000 pounds per square inch (psi) is required for all nonshrink cementitious grout.

2. General purpose nonshrink cementitious grout shall conform to the standards stated above and shall be SikaGrout 212 by Sika Corp.; NS Grout by The Euclid Chemical Co.; FSP Construction Grout by Five Star Products Inc.; or equal.

3. Flowable (Precision) nonshrink cementitious grout shall conform to the standards stated above and shall be Masterflow 928 by BASF Building Systems; Hi-Flow Grout by the Euclid Chemical Co.; SikaGrout 212 by Sika Corp.; Five Star Grout, by Five Star Products Inc.; or equal.

B. Nonshrink Epoxy Grout:

1. Nonshrink epoxy-based grout shall be a pre-proportioned, three-component, 100 percent solids system consisting of epoxy resin, hardener, and blended aggregate.

It shall have a minimum compressive strength of 10,000 psi in 7 days when tested in accordance with ASTM C579, Method B, and have a maximum thermal expansion of 30x10-6 when tested in accordance with ASTM C531. The grout shall be Masterflow 648 CP by BASF Building Systems; Five Star HP Epoxy Grout by Five Star Products, Inc.; Sikadur 42 Grout-Pak by Sika Corp.; E3-HP by the Euclid Chemical Co.; or equal.

C. Cement Grout:

1. Cement grouts shall be a mixture of one part Portland cement conforming to ASTM C150 Types I, II, or III and one to two parts sand conforming to ASTM C33 with sufficient water to place the grout. The water content shall be sufficient to impart workability to the grout but not to the degree that it will allow the grout to flow.

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D. Concrete Grout:

1. Concrete grout shall conform to the requirements of Section 03300 except as specified herein. It shall be proportioned with cement, pozzolan, coarse and fine aggregates, water, water reducer, and air-entraining agent to produce a mix having an average strength of 2,900 psi at 28 days, or 2,500 psi nominal strength. Coarse aggregate size shall be 3/8-in maximum. Slump should not exceed 5 inches and should be low as practical yet still retain sufficient workability.

E. Water:

1. Water shall be potable, free from injurious amounts of oil, acid, alkali, organic matter, or other deleterious substances.

PART 3 - EXECUTION

3.01 PREPARATION
A. Grout shall be placed over cured concrete that has attained its full design strength unless otherwise approved by the ENGINEER.

B. Concrete surfaces to receive grout shall be clean and sound; free of ice, frost, dirt, grease, oil, curing compounds, laitance, and paints; and free of all loose material or foreign matter that may affect the bond or performance of the grout.

C. Roughen hardened concrete surfaces by chipping, sandblasting, or other mechanical means to ensure bond of the grout to the concrete. Remove loose or broken concrete.

Irregular voids or projecting coarse aggregate need not be removed if they are sound, free of laitance, and firmly embedded into the parent concrete.

1. Air compressors used to clean surfaces in contact with grout shall be the oilless type or equipped with an oil trap in the airline to prevent oil from being blown onto the surface.

D. Remove all loose rust, oil, or other deleterious substances from metal embedments or bottom of baseplates before the installation of the grout.

E. Concrete surfaces shall be washed clean and then kept moist for at least 24 hours before the placement of cementitious or cement grout. Saturation may be achieved by covering the concrete with saturated burlap bags, use of a soaker hose, flooding the surface, or other method acceptable to the ENGINEER. Upon completion of the 24-hour period, visible water shall be removed from the surface before grouting. The use of an adhesive bonding agent in lieu of surface saturation shall only be used when approved by the ENGINEER for each specific location of grout installation.

F. Epoxy-based grouts do not require the saturation of the concrete substrate. Surfaces in contact with epoxy grout shall be completely dry before grouting.

G. Construct grout forms or other leak proof containment as required. Forms shall be lined or coated with release agents recommended by the grout manufacturer. Forms shall be of adequate strength, securely anchored in place and shored to resist the forces imposed by the grout and its placement.

1. Forms for epoxy grout shall be designed to allow the formation of a hydraulic head and shall have chamfer strips built into forms.

H. Level and align the structural elements or equipment bearing plates in accordance with the structural requirements and the recommendations of the equipment manufacturer.

I. Equipment shall be supported during alignment and installation of grout by shims, wedges, blocks, or other approved means. The shims, wedges, and blocking devices shall be

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prevented from bonding to the grout by appropriate bond breaking coatings and removed after grouting unless otherwise approved by the ENGINEER.

3.02 INSTALLATION - GENERAL
A. Mix, apply, and cure products in strict compliance with the manufacturer's recommendations and this Section.

B. Have sufficient manpower and equipment available for rapid and continuous mixing and placing. Keep all necessary tools and materials ready and close at hand.

C. Maintain temperatures of the foundation plate, supporting concrete, and grout between 40 and 90 degrees Fahrenheit (F) during grouting and until grout compressive strength reaches 1,000 psi or as recommended by the grout manufacturer, whichever is longer.

Take precautions to minimize differential heating or cooling of baseplates and grout during the curing period.

D. Take special precautions for hot weather or cold weather grouting as recommended by the manufacturer when ambient temperatures and/or the temperature of the materials in contact with the grout are outside of the 60–90 degrees F range.

E. Install grout in a manner that will preserve the isolation between the elements on either side of the joint where grout is placed in the vicinity of an expansion or control joint.

F. Reflect all existing underlying expansion, control, and construction joints through the grout.

3.03 INSTALLATION - CEMENT GROUTS AND NONSHRINK CEMENTITIOUS GROUTS A. Mix in accordance with manufacturer's recommendations. Do not add cement, sand, pea gravel, or admixtures without prior approval by the ENGINEER.

B. Avoid mixing by hand. Mixing in a mortar mixer (with moving blades) is recommended. Prewet the mixer and empty excess water. Add pre-measured amount of water for mixing, followed by the grout. Begin with the minimum amount of water recommended by the manufacturer and then add the minimum additional water required to obtain workability. Do not exceed the manufacturer's maximum recommended water content.

C. Placements greater than 3 inches in depth shall include the addition of clean, washed pea gravel to the grout mix when approved by the manufacturer. Comply with the manufacturer's recommendations for the size and amount of aggregate to be added. Place grout into the designated areas in a manner that will avoid segregation or entrapment of air. Do not vibrate grout to release air or to consolidate the material. Placement should proceed in a manner that will ensure the filling of all spaces and provide full contact between the grout and adjoining surfaces. Provide grout holes as necessary.

D. Place grout rapidly and continuously to avoid cold joints. Do not place cement grouts in layers. Do not add additional water to the mix (retemper) after initial stiffening.

E. Just before the grout reaches its final set, cut back the grout to the substrate at a 45 degree angle from the lower edge of the bearing plate unless otherwise approved by the ENGINEER. Finish this surface with a wood float (brush) finish.

F. Begin curing immediately after form removal, cutback, and finishing. Keep grout moist and within its recommended placement temperature range for at least 24 hours after placement or longer if recommended by the manufacturer. Saturate the grout surface by use of wet burlap, soaker hoses, ponding, or other approved means. Provide sunshades as necessary. If drying winds inhibit the ability of a given curing method to keep grout moist, erect wind breaks until wind is no longer a problem or curing is finished.

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3.04 INSTALLATION - NONSHRINK EPOXY GROUTS
A. Mix in accordance with the procedures recommended by the manufacturer. Do not vary the ratio of components or add solvent to change the consistency of the grout mix. Do not over mix. Mix full batches only to maintain proper proportions of resin, hardener, and aggregate.

B. Monitor ambient weather conditions and contact the grout manufacturer for special placement procedures to be used for temperatures below 60 or above 90 degrees F.

C. Place grout into the designated areas in a manner that will avoid trapping air. Placement methods shall ensure the filling of all spaces and provide full contact between the grout and adjoining surfaces. Provide grout holes as necessary.

D. Minimize "shoulder" length (extension of grout horizontally beyond baseplate). In no case shall the shoulder length of the grout be greater than the grout thickness.

E. Finish grout by puddling to cover all aggregate and provide a smooth finish. Break bubbles and smooth the top surface of the grout in conformity with the manufacturer's recommendations.

F. Epoxy grouts are self-curing and do not require the application of water. Maintain the formed grout within its recommended placement temperature range for at least 24 hours after placing, or longer if recommended by the manufacturer.

3.05 INSTALLATION - CONCRETE GROUT
A. Screed underlying concrete to the grade shown on the Drawings. Provide the surface with a broomed finish, aligned to drain. Protect and keep the surface clean until placement of the concrete grout.

B. Remove the debris and clean the surface by sweeping and vacuuming all dirt and other foreign materials. Wash the tank slab using a strong jet of water. Flushing of debris into tank drain lines will not be permitted.

C. Saturate the concrete surface for at least 24 hours before placement of the concrete grout.

Saturation may be maintained by ponding, by the use of soaker hoses, or by other methods acceptable to the ENGINEER. Remove excess water just before placement of the concrete grout. Place a cement slurry immediately ahead of the concrete grout so that the slurry is moist when the grout is placed. Work the slurry over the surface with a broom until it is coated with an approximately 1/16 to 1/8-inch-thick cement paste. [(A bonding agent composed of 1 part Portland cement, 1.5 parts fine sand, an approved bonding admixture, and water, mixed to achieve the consistency of thick paint, may be substituted for the cement slurry.)]
D. Place concrete grout to final grade using the scraper mechanism as a guide for surface elevation and to ensure high and low spots are eliminated. Unless specifically approved by the equipment manufacturer, mechanical scraper mechanisms shall not be used as a finishing machine or screed.

E. Provide grout control joints as indicated on the Drawings.

F. Finish and cure the concrete grout as specified for cast-in-place concrete.

3.06 SCHEDULE
A. General Purpose Nonshrink Cementitious Grout - Use at all locations where nonshrink grout is called for on the Drawings except for baseplates greater in area than 3 feet wide by 3 feet long and except for the setting of anchor rods, anchor bolts, or reinforcing steel in concrete.

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B. Flowable Nonshrink Cementitious Grout - Use under all baseplates greater in area than 3 feet by 3 feet. Use at all locations indicated to receive flowable nonshrink grout on the Drawings. The CONTRACTOR, at his/her option and convenience, may substitute flowable nonshrink grout for general purpose nonshrink cementitious grout.

C. Nonshrink Epoxy Grout - Use for the setting of anchor rods, anchor bolts, and reinforcing steel in concrete and for all locations specifically indicated to receive epoxy grout.

D. Cement Grout - Cement grout may be used for grouting of incidental baseplates for structural and miscellaneous steel such as post baseplates for platforms, baseplates for beams, etc. It shall not be used when nonshrink grout is specifically called for on the Drawings or for grouting of primary structural steel members such as columns and girders.

E. Concrete Grout - Use at all locations indicated on the Drawings to receive Concrete grout.

END OF SECTION

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SECTION 03740

MODIFICATIONS AND REPAIR TO CONCRETE
PART 1 - GENERAL

1.01 WORK INCLUDED
A. Furnish all labor, materials, equipment, and incidentals required to cut, remove, repair or otherwise modify parts of existing concrete structures as shown on the Drawings and as specified herein as necessary to complete the Work. Work under this Section shall also include bonding new concrete to existing concrete.

1.02 RELATED WORK
A. Related Work Specified Elsewhere:

1. Section 03100, Concrete Formwork.

2. Section 03150, Concrete Joints, and Joint Accessories.

3. Section 03200, Concrete Reinforcement.

4. Section 03300, Cast-in-Place Concrete.

5. Section 03600, Grout.

1.03 REFERENCE SPECIFICATIONS, CODES AND STANDARDS
A. American Society for Testing and Materials (ASTM)

1. ASTM C881 – Standard Specification for Epoxy-Resin-Base Bonding Systems for Concrete.

2. ASTM C882 - Test Method for Bond Strength of Epoxy-Resin Systems Used with Concrete.

3. ASTM C883 - Test Method for Effective Shrinkage of Epoxy-Resin Systems Used with Concrete.

4. ASTM D570 - Test Method for Water Absorption of Plastics.

5. ASTM D638 - Standard Test Method for Tensile Properties of Plastic.

6. ASTM D695 - Test Method for Compressive Properties of Rigid Plastic.

7. ASTM D732 - Standard Test Method for Shear Strength of Plastics by Punch Tool.

8. ASTM D790 - Standard Test Methods for Flexural Properties of Unreinforced Plastic and Electrical Insulating Materials.

B. Where reference is made to one of the above standards, the revision in effect at the time of bid opening shall apply.

1.04 SUBMITTALS
A. All submittals shall be in accordance with Division 1.

B. Submit manufacturer's technical literature on all product brands proposed for use by the CONTRACTOR, to the ENGINEER for review. The submittal shall include the manufacturer's installation and/or application instructions.

C. When substitutions for acceptable brands of materials specified herein are proposed by the CONTRACTOR, submit brochures and technical data of the proposed substitutions to the ENGINEER for approval before delivery to the jobsite.

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1.05 QUALITY ASSURANCE
A. No existing structure or concrete shall be shifted, cut, removed, or otherwise altered until authorization is given by the ENGINEER.

B. When removing materials or portions of existing structures and when making openings in existing structures, all precautions shall be taken and all necessary barriers, shoring and bracing and other protective devices shall be erected to prevent damage to the structures beyond the limits necessary for the new work, protect personnel, control dust and to prevent damage to the structures or contents by falling or flying debris. Unless otherwise permitted, shown or specified, line drilling will be required in cutting existing concrete.

C. Manufacturer qualifications: The manufacturer of the specified products shall have a minimum of ten years experience in the manufacture of such products and shall have an ongoing program of training, certifying and technically supporting the CONTRACTOR's personnel.

D. Contractor qualifications: Contractors shall complete a program of instruction in the application of the approved manufacturer's material specified in this Section and provide certification from the manufacturer attesting to their training and status as an approved applicator.

1.06 DELIVERY, STORAGE AND HANDLING
A. Deliver materials to the jobsite in original, unopened packages, clearly labeled with the manufacturer's name, product identification, batch numbers and printed instructions.

B. Store materials in full compliance with the manufacturer’s recommendations.

PART 2 - PRODUCTS

2.01 GENERAL REQUIREMENTS
A. The use of a manufacturer’s name and model or catalog number is for the purpose of establishing the standard of quality and general configuration desired.

B. Materials shall comply with this Section and any applicable State or Local requirements.

2.02 MATERIALS
A. Epoxy Bonding Agent:

1. Epoxy bonding agent shall be a two-component, solvent-free, moisture insensitive epoxy resin material used to bond plastic concrete to hardened concrete complying with the requirements of ASTM C881, Type II.

2. Color shall be concrete gray.

3. Product shall be Sikadur 32 Hi-Mod by Sika Corporation; MasterEmaco ADH 326 by Master Builders Solutions; or approved equal.

B. Epoxy Paste:

1. Epoxy paste shall be a two-component, solvent-free, moisture insensitive epoxy resin material used to bond dissimilar materials to concrete such as setting railing posts, dowels, anchor bolts, and all-thread rods into hardened concrete and shall comply with the requirements of ASTM C881, Type I, Grade 3. It may also be used to patch existing surfaces where the glue line is 1/8-in or less.

2. Color shall be concrete gray.

3. Product shall be Sikadur 31 Hi-Mod Gel by Sika Corporation; Concresive Paste LPL by BASF Building Systems; or approved equal.

C. Nonshrink Grout and Nonshrink Epoxy Grout shall be as specified in Section 03600.

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D. Adhesive anchors shall be as specified in Section 05500.

E. Crack Repair Epoxy Adhesive:

1. Unless otherwise directed by the ENGINEER, crack repair products and methodolgies shall meet the minimum standards delineated in ACI SPEC-548.15, Specification for Crack Repair by Epoxy Injection.

2. Crack Repair Epoxy Adhesive shall be a two-component, solvent-free moisture insensitive epoxy resin material suitable for crack grouting by injection or gravity feed. It shall be formulated for the specific size of opening or crack being injected.

3. For standard applications, product shall be Sikadur 35 Hi-Mod LV by Sika Corporation; SCB Concresive 1380 by BASF Building Systems; or approved equal.

PART 3 - EXECUTION

3.01 GENERAL
A. Cut, repair, reuse, demolish, excavate or otherwise modify parts of the existing structures, as indicated on the Drawings, specified, or necessary to permit completion of the Work. Finishes, joints, reinforcements, sealants, etc. are specified in other Sections of this Specification. All work shall comply with other requirements of this Section and as shown on the Drawings.

B. All commercial products specified in this Section shall be stored, mixed, and applied in strict compliance with the manufacturer's recommendations.

C. In all cases where concrete is repaired in the vicinity of an expansion joint or control joint the repairs shall be made to preserve the isolation between components on either side of the joint.

D. When drilling holes for dowels/bolts at new or existing concrete, drilling shall stop if rebar is encountered. As approved by the ENGINEER, the hole location shall be relocated to avoid rebar. The CONTRACTOR shall not cut rebar without prior approval. Where possible, rebar locations shall be identified prior to drilling using "rebar locators" so that drilled hole locations may be adjusted to avoid rebar interference.

E. When coring new openings at new or existing concrete, the CONTRACTOR shall identify existing rebar locations using “rebar locators”. Where possible and as approved by the ENGINEER, the CONTRACTOR shall locate the new hole to avoid and/or minimize rebar interference. The CONTRACTOR shall not cut existing rebar without prior approval from the ENGINEER.

3.02 CONCRETE REMOVAL
A. Concrete designated to be removed to specific limits as shown on the Drawings or directed by the ENGINEER, shall be done by line drilling at limits followed by chipping or jack-hammering as appropriate in areas where concrete is to be taken out. Remove concrete in such a manner that surrounding concrete or existing reinforcing to be left in place and existing in place equipment is not damaged. Sawcutting at limits of concrete to be removed shall only be done if indicated on the Drawings, or after obtaining written approval from the ENGINEER.

B. Where existing reinforcing is exposed due to saw cutting/core drilling and no new material is to be placed on the saw cut surface, a coating or surface treatment of epoxy paste shall be applied to the entire cut surface to a thickness of 1/4-in.

C. In all cases where the joint between new concrete or grout and existing concrete will be exposed in the finished work, except as otherwise shown or specified, the edge of concrete removal shall be a 1-in deep saw cut on each exposed surface of the existing concrete.

D. Concrete specified to be left in place that is damaged by the CONTRACTOR shall be repaired by approved means to the satisfaction of the ENGINEER and at no additional cost to the OWNER.

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E. The ENGINEER may from time to time direct the CONTRACTOR to make additional repairs to existing concrete. These repairs shall be made as specified or by such other methods as may be appropriate.

3.03 CONNECTION SURFACE PREPARATION
A. Connection surfaces shall be prepared as specified below for concrete areas requiring patching, repairs or modifications as shown on the Drawings, specified, or as directed by the ENGINEER.

B. Remove all deteriorated materials, dirt, oil, grease, and all other bond inhibiting materials from the surface by dry mechanical means, i.e. - sandblasting, grinding, etc., as approved by the ENGINEER. Surfaces shall be roughened to a full amplitude of at least 1/2-in in depth. Irregular voids or surface stones need not be removed if they are sound, free of laitance, and firmly embedded into parent concrete, subject to the ENGINEER's final inspection.

C. If reinforcing steel is exposed, it must be mechanically cleaned to remove all contaminants, rust, etc., as approved by the ENGINEER. If half of the diameter of the reinforcing steel is exposed, chip out behind the steel. The distance chipped behind the steel shall be a minimum of 1/2-in. Reinforcing to be saved shall not be damaged during the demolition operation.

D. Reinforcing from existing demolished concrete that is shown to be incorporated in new concrete shall be cleaned by mechanical means to remove all loose material and products of corrosion before proceeding with the repair. It shall be cut, bent or lapped to new reinforcing as shown on the Drawings and provided with one-inch minimum cover all around.

E. The following are specific concrete surface preparation and connection "methods" to be used where called for on the Drawings, specified or as directed by the ENGINEER.

1. Method A - After the existing concrete surface at the connection has been roughened and cleaned, thoroughly saturate and maintain saturation for a period of at least 12 hours.

Brush on a 1/16-in layer of cement and water mixed to the consistency of a heavy paste.

Immediately after application of cement paste, place new concrete or grout mixture as detailed on the Drawings.

2. Method B – After the existing concrete surface has been roughened and cleaned, apply epoxy-bonding agent at connection surface. The field preparation and application of the epoxy-bonding agent shall comply strictly with the manufacturer's recommendations. Place new concrete or grout mixture to limits shown on the Drawings within time constraints recommended by the manufacturer to ensure bond.

3. Method C - Adhesive anchors shall be set in existing concrete by drilling holes to the required depth to develop the full tensile and shear strengths of the anchor material being used. The adhesive anchor system shall be installed per the manufacturer's recommendation in holes sized as required. Unless otherwise shown on the Drawings, deformed bars shall be drilled and set to a depth of ten bar diameters and smooth bars shall be drilled and set to a depth of 15 bar diameters. The anchor may be installed in horizontal, vertical and overhead positions as indicated on the Drawings. The allowable tensile value for anchors installed in overhead positions shall be limited to 50% of the ICC ES published allowable value.

4. Method D - Combination of Method B and C.

3.04 GROUTING
A. Grouting shall be as specified in Section 03600.

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3.05 CRACK REPAIR
A. Cracks on horizontal surfaces shall be repaired by gravity feeding crack repair adhesive into cracks per manufacturer's recommendations. If cracks are less than 1/16-in in thickness they shall be pressure injected.

B. Cracks on vertical surfaces shall be repaired by pressure injecting crack repair adhesive through valves sealed to the surface with crack repair epoxy adhesive per manufacturer's recommendations.

END OF SECTION

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SECTION 05500

MISCELLANEOUS METALS
PART 1 - GENERAL

1.01 THE REQUIREMENT
A. Furnish all labor, materials, equipment and incidentals required and install all miscellaneous metal complete as shown on the Drawings and as specified herein.

1.02 RELATED WORK SPECIFIED ELSEWHERE
A. Section 03100 - Concrete Formwork
B. Section 03150 - Concrete Joints and Joint Accessories C. Section 03200 - Concrete Reinforcement
D. Section 03300 - Cast-in-Place Concrete
E. Section 03600 - Grout
F. Section 03740 - Modifications and Repair to Concrete G. Section 09960 - High Performance Coatings
H. Section 09970 - Mechanical Zinc Coating
I. Section 09972 - Hot-Dip Zinc Coating

1.03 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Federal Specifications:

1. DOD-P-21035 - Paint, High Zinc Dust Content, Galvanizing Repair

2. FF-B-575C - Bolts, Hexagonal and Square

3. MIL-G-18015 A (3) - (Ships) Aluminum Planks (6063-T6)

4. MIL-A-907E - Antiseize Thread Compound, High Temperature

5. MIL-P-26915 - Primer Coating, Zinc Dust Pigment
B. Aluminum Association (AA):

1. AA-M32C22A41 - M31 - Mechanical Finish, Fine Satin; C22 - Finish, Medium Matte; A41 - Clear Anodic Coating, Class I
C. American Association of State Highway and Transportation Officials (AASHTO):

1. Standard Specifications for Highway Bridges - HS20 Truck Loading D. American Concrete Institute (ACI):

1. ACI 355.2 - Qualification of Post-Installed Mechanical Anchors in Concrete

2. ACI 355.4 - Qualification of Post-Installed Adhesive Anchors in Concrete E. American Institute of Steel Construction (AISC):

1. Manual of Steel Construction - Allowable Stress Design F. American Iron and Steel Institute (AISI):

1. Design of Light Gauge, Cold-Formed Steel Structural Members

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G. American Society for Testing and Materials (ASTM):

1. ASTM-A6 - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling

2. ASTM A36 - Standard Specification for Carbon Structural Steel

3. ASTM A48 - Standard Specification for Gray Iron Castings

4. ASTM A53 - Standard Specification for Pipe, Steel, Black and Hot-Dipped, ZincCoated Welded and Seamless

5. ASTM A108 - Standard Specification for Steel Bar, Carbon and Alloy, Cold Finished

6. ASTM A123 - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

7. ASTM A125 - Standard Specification Steel Springs, Helical, Heat Treated

8. ASTM A153 - Standard Specification Zinc Coating (Hot-Dip) on Iron and Steel Hardware

9. ASTM A167 - Standard Specification for Stainless and Heat-Resisting ChromiumNickel Steel Plate, Sheet and Strip

10. ASTM A193 - Standard Specification for Alloy Steel and Stainless Steel Bolting Materials for High Temperature or High Pressure Service and other Special Purpose Applications

11. ASTM A194 - Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

12. ASTM A276 - Standard Specification for Stainless Steel Bars and Shapes

13. ASTM A307 - Standard Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile Strength

14. ASTM A325 - Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 KSI Minimum Tensile Strength

15. ASTM A384 Standard Practice for Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Assemblies

16. ASTM A500 - Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

17. ASTM A501 - Standard Specification for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing

18. ASTM A536 - Standard Specification for Ductile Iron Castings

19. ASTM A563 - Standard Specification for Carbon and Alloy Steel Nuts

20. ASTM A575 - Standard Specification for Steel Bars, Carbon, Merchant Quality, MGrades

21. ASTM A780 - Standard Practice for Repair of Damage and Uncoated Areas of HotDipped Galvanized Coatings

22. ASTM A786 - Standard Specification for Hot-Rolled Carbon, Low Alloy, High Strength Low Alloy and Alloy Steel Floor Plates

23. ASTM A992 - Standard Specification for Structural Steel Shapes

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24. ASTM A1008 - Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, Bake Hardenable

25. ASTM A1011 - Standard Specification for Steel, Sheet and Strip, Hot-Rolled Carbon, Structural, High-Strength Low-Alloy and Ultra-High Strength, and HighStrength Low-Alloy with Improved Formability

26. ASTM B98 - Standard Specification for Copper-Silicon Alloy Rod, Bar, and Shapes

27. ASTM B201 - Standard Practice for Testing Chromate Coatings on Zinc and Cadmium Surfaces

28. ASTM B209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

29. ASTM B221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles and Tubes

30. ASTM B429 - Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube

31. ASTM B695 - Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel

32. ASTM C633 - Standard Test Method for Adhesion or Cohesion Strength of Thermal Spray Coatings

33. ASTM D6386 - Standard Practice for Preparation of Zinc (Hot-Dipped Galvanized) Coated Iron and Steel Product and Hardware Surfaces for Painting

34. ASTM E140 - Hardness Conversion Tables for Metals

35. ASTM E376 Standard Practice for Measuring Coat Thicknesses by Magnetic-Field or Eddy-Current (Electromagnetic) Examination Methods

36. ASTM E384 - Micro Hardness of Materials

37. ASTM F593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs

38. ASTM F594 - Standard Specification for Stainless Steel Nuts

39. ASTM F1554 - Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength
H. American Welding Society (AWS)

1. ANSI/AWS D1.1- Structural Welding Code - Steel

2. ANSI/AWS D1.2 - Structural Welding Code - Aluminum

3. ANSI/AWS QC1 - Qualification and Certification of Welding Inspectors I. National Fire Protection Association (NAFP):

1. NFPA 101 - Life Safety Code
J. National Association of Corrosion Engineers (NACE)

1. Coating Inspector Program (CIP)
K. Where reference is made to one of the above standards, the revision in effect at the time of bid opening shall apply.

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1.04 SUBMITTALS
A. Shop Drawings - Shop drawings of all miscellaneous metalwork shall be submitted to the ENGINEER for review in accordance with Division 1.

B. An International Code Council Evaluation Services (ICC-ES) report listing the ultimate load capacity in tension and shear for each size and type of concrete anchor used shall be submitted to the ENGINEER for review. The CONTRACTOR shall submit manufacturer's recommended installation instructions and procedures for all adhesive anchors for ENGINEER's review. Upon review, by ENGINEER, these instructions shall be followed explicitly.

C. No substitution for the indicated adhesive anchors will be considered unless accompanied with ICC-ES report verifying strength and material equivalency, including temperature at which load capacity is reduced to 90 percent of that determined at 75 degrees Fahrenheit (F).

D. Samples:

1. Submit samples for verification of each type of mechanical equipment stanchions/rails, pipe frame supports, and FRP metal platform systems for verification of each type of exposed finish required, prepared in components of the same thickness and metal indicated for the final Work. Where finishes involve normal color and texture variations, include sample sets showing the full range of variations expected.

E. Design Data:

1. Mechanical equipment stanchions/rails, pipe frame supports, and FRP metal platform systems:
a. Submit design calculations, signed and sealed by a Civil or Structural Engineer, licensed in the State of California.
b. Submit data showing the location, magnitude, and direction of all dead, live, wind and seismic load reactions imposed on the anchoring surfaces.

F. Test Reports:

1. Submit a certified copy of mill test reports on each steel proposed for use showing the physical properties and chemical analysis.

G. Certificates:

1. Submit a certified copy of mill test reports on each steel proposed for use showing the physical properties and chemical analysis.

2. Submit coating applicator’s Certificate of Compliance that the prepared, hotdipped, galvanized coating surface meets or exceeds the requirements for successful painting of the surface.

1.05 QUALITY ASSURANCE
A. The work of this Section shall be completely coordinated with the work of other Sections.

Verify, at the site, both the dimensions and work of other trades adjoining items of work in this Section before fabrication and installation of items herein specified.

B. Furnish to the pertinent trades all items included under this Section that are to be built into the work of other Sections.

C. All welding shall be performed by qualified welders and shall conform to the applicable AWS welding code. Welding of steel shall conform to AWS D1.1 and welding of aluminum shall conform to AWS D1.2.

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D. All welding procedures and welder qualification shall be available in the CONTRACTOR's field office for ENGINEER's review.

E. All welding shall be inspected by an OWNER-provided inspector qualified in accordance with AWS requirements and approved by the ENGINEER.

F. Unless otherwise directed by the ENGINEER, the CONTRACTOR shall provide the services of an independent, NACE-certified coating inspector. The cost of such work, except as specifically stated otherwise, shall be paid by the CONTRACTOR. All shopapplied coatings shall be inspected by an inspector, qualified in accordance with NACE requirements and approved by the ENGINEER.

1.06 DELIVERY, STORAGE, AND HANDLING
A. Deliver items to be incorporated into the work of other trades in sufficient time to be checked before installation.

B. Items damaged during transit, inadequate storage, improper handling, or corroded shall be repaired, at the CONTRACTOR's expense, to the satisfaction of the ENGINEER before incorporating them into the work.

1.07 PROJECT/SITE REQUIREMENTS
A. Field measurements shall be taken at the site, before fabrication of items, to verify or supplement indicated dimensions and to ensure proper fitting of all items.

PART 2 - PRODUCTS

2.01 GENERAL REQUIREMENTS
A. The use of manufacturer's name and model or catalog number is for the purpose of establishing the standard of quality and general configuration desired.

B. Like items of materials shall be the end products of one manufacturer in order to provide standardization for appearance, maintenance, and manufacturer's service.

C. Steel shall be as listed below, unless otherwise noted:

1. Shapes, Plates, Bars: ASTM A36, unless otherwise noted.

2. Wide-flange structural steel shapes: ASTM A992.

3. Pipe, Pipe Columns, Bollards: ASTM A53, Type E or S, Grade B Standard weight unless noted otherwise.

4. Tubes: ASTM A500 Grade B.

5. Corrosion Protection - Unless otherwise indicated, miscellaneous metalwork of fabricated steel that will be used in a corrosive environment and/or will be submerged in water/wastewater shall be coated with protective coating. All other miscellaneous steel metalwork shall be hot-dip galvanized after fabrication as specified herein, if applicable.

D. Stainless steel shall be as listed below, unless otherwise noted:

1. Exterior - Stainless steel plates, sheets, and structural shapes ASTM A167, Type 316 (Type 316L for welding) stainless steel and shall not be galvanized. Where anaerobic conditions are noted, Type 304 stainless steel shall be used.

2. Interior - Stainless steel plates, sheets, and structural shapes ASTM A167, Type 316.

E. Aluminum shall be as listed below, unless otherwise noted:

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1. Extruded Pipe ASTM B429, Alloy 6063-T6.

2. Extruded Shapes ASTM B221, Alloy 6061-T6.

3. Sheet and Plate ASTM B209, Alloy 6061-T6.

F. Cast iron shall be as listed below, unless otherwise noted:

1. Iron castings shall conform to the requirements of ASTM A48, Class 50B or better.

G. Bolts, nuts, and washers shall be as listed below, unless otherwise noted:

1. Carbon Steel Bolts and Studs ASTM A307, Grade A (hot-dip galvanized nuts and washers where noted).

2. Carbon Steel Anchor Bolts for Building Anchorage, ASTM F1554 Grade 36, unless otherwise noted (hot-dip galvanized nuts and washers where noted).

3. Stainless Steel Bolts, Nuts, and Washers, ASTM F593 and ASTM F594, Type 316.

4. High-Strength Steel Bolts, Nuts, and Washers, ASTM A325 (mechanically galvanized per ASTM B695, Class 50, where noted).
a. Elevated Temperature, Exposure Type I.
b. General Application, Type I or Type II.

H. Galvanizing shall be ASTM A123, Zinc with 0.04 percent to 0.07 percent nickel added for steels with silicone content between 0.03 percent and 0.22 percent.

I. Galvanizing shall be Hardware ASTM A153, Zinc with 0.04 percent to 0.07 percent nickel added for steels with silicone content between 0.03 percent and 0.22 percent.

J. Duplex System - Galvanizing shall satisfy the requirements of ASTM A123 or A153, as applicable. Water quenching or chromate conversion coating shall be avoided as these processes may interfere with paint adhesion and surface preparation.

2.02 MISCELLANEOUS STEEL
A. All miscellaneous metal work shall be formed true to detail, with clean, straight, sharply defined profiles and smooth surfaces of uniform color and texture and free from defects impairing strength or durability. Holes shall be drilled or punched. Edges shall be smooth and without burrs. Fabricate supplementary pieces necessary to complete each item even if such pieces are not definitively shown or specified.

B. Connections and accessories shall be of sufficient strength to safely withstand the stresses and strains to which they will be subjected. Exposed joints shall be close-fitting and jointed where least conspicuous. Threaded connections shall have the threads concealed where practical. Welded connections shall have continuous welds or intermittent welds as specified or shown. The face of welds shall be dressed flush and smooth. Provide holes for temporary field connections and for attachment of the work of other trades.

C. Miscellaneous steel items shall include beams, angles, lintels, metal stairs, support brackets, baseplates for other than structural steel or equipment, closure angles, bridge crane rails, monorail hoist beams, hold-down straps and lugs, door frames, splice plates, sub-framing at roof openings and any other miscellaneous steel called for on the Drawings and not otherwise specified.

D. Steel pipe pieces for sleeves, lifting attachments, and other functions shall be Schedule 40 pipe unless otherwise shown on the Drawings. Wall and floor sleeves of steel pipe shall have welded circumferential steel waterstops at mid-length.

E. All steel finish work shall be thoroughly cleaned, by effective means, of all loose mill scale, rust, and foreign matter and shall be given one shop coat of primer compatible with the finish coat after fabrication but before shipment. Paint shall be omitted within 3 inches of

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proposed field welds. Paint shall be applied to dry surfaces and shall be thoroughly and evenly spread and well worked into joints and other open spaces.

F. Galvanizing, where required, shall be the hot-dip zinc process after fabrication. Coating shall be not less than 2 ounces per square foot of surface.

2.03 MISCELLANEOUS STAINLESS STEEL
A. All miscellaneous metal work shall be formed true to detail, with clean, straight, sharply defined profiles and smooth surfaces of uniform color and texture and free from defects impairing strength or durability. Holes shall be drilled or punched. Edges shall be smooth and without burrs. Fabricate supplementary pieces necessary to complete each item even if such pieces are not definitively shown or specified.

B. Connections and accessories shall be of sufficient strength to safely withstand the stresses and strains to which they will be subjected. Exposed joints shall be close-fitting and jointed where least conspicuous. Threaded connections shall have the threads concealed where practical. Welded connections shall have continuous welds or intermittent welds as specified or shown. The face of welds shall be dressed flush and smooth. Provide holes for temporary field connections and for attachment of the work of other trades.

C. Miscellaneous stainless steel items shall include beams, angles, bar racks, and any other miscellaneous stainless steel called for on the Drawings and not otherwise specified.

2.04 MISCELLANEOUS FRAMING AND SUPPORTS
A. Fabricate miscellaneous units to the sizes, shapes, and profiles shown or, if not shown, of the required dimensions to receive adjacent grating, plates, tanks, doors, or other work to be retained by the framing. Except as otherwise shown, fabricate from structural shapes, plates, and bars, of all welded construction using mitered corners, welded brackets, and splice plates and a minimum number of joints for field connection. Cut, drill, and tap units to receive hardware and similar items to be anchored to the Work.

B. Equipment units with integrally welded anchors for casting into concrete. Furnished inserts for units must be installed after concrete is placed.

C. Except as otherwise shown, space anchors, 24 inches on-center, and provide units equivalent of 1 1/4-inch by 1 1/4-inch by 8-inch strips.

D. Galvanize all miscellaneous framing and supports, unless otherwise specified on the project documents.

2.05 FRAMING SUPPORT SYSTEMS FOR PIPE ASSEMBLIES, ANALYZERS, AND

APPURTENANCES
A. Provide framing support systems for pipe assemblies shown on the Contract Drawings.

B. Furnish and install all anchoring and connecting hardware required for assembly and installation of the framing support system(s).

C. All anchoring and connecting hardware shall be Type 316 Stainless Steel.

D. All exterior framing support systems, and all systems within sub-grade vaults, for pipe assemblies and appurtenances shall be fabricated of Type 316 Stainless Steel.

E. All framing support systems that are used in interior, non-submerged applications shall be fabricated of low-carbon steel and furnished with a factory-applied, hot-dipped, galvanized coating.

F. Where framing support systems are shown in locations with no adjacent wall, the framing support system shall be free-standing and designed to withstand a point load of 200 pounds applied at the top of the framing system such that the maximum deflection shall

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not exceed 1/4 inch. Base support members shall be a minimum of 2 feet long and shall use Unistrut P2348 connectors, or approved equal.

G. Manufacturer - Unless otherwise shown, all members shall be P1000, manufactured by Unistrut, or approved equal, with type "HS" hole pattern.

2.06 BOLTS AND ANCHORS
A. Standard Service (Non-Corrosive Application): Unless otherwise indicated, bolts, anchor bolts, washers, and nuts shall be steel, galvanized after fabrication as indicated herein.

Threads on galvanized bolts and nuts shall be formed with suitable taps and dies such that they retain their normal clearance after hot-dip galvanizing. Except as otherwise indicated, steel for bolts, anchor bolts, and cap screws shall be in accordance with the requirements of ASTM A307, Grade A.

B. Corrosive Service: All bolts, nuts, and washers in the locations listed below shall be stainless steel as indicated below.

1. All buried locations

2. All submerged locations

3. All locations subject to seasonal or occasional flooding

4. Inside hydraulic structures below the top of the structure

5. Inside buried vaults, manholes, and structures that do not drain through a gravity sewer or to a sump with a pump

6. All chemical handling areas

7. Inside trenches, containment walls, and curbed areas

8. All post-installed anchors NOT installed in dry, interior locations

9. Locations indicated on the Contract Documents or designated by the ENGINEER to be provided with stainless steel bolts
C. All bolted connections for aluminum members shall be stainless steel.

D. Unless otherwise indicated, stainless steel bolts, anchor bolts, nuts, and washers shall be Type 316 stainless steel, class 2, conforming to ASTM A276. All threads on stainless steel bolts shall be protected with an antiseize lubricant suitable for submerged stainless steel bolts, to meet government specification MIL-A-907E. Buried bolts in poorly drained soil shall be coated the same as the buried pipe.

1. Antiseize lubricant shall be classified as acceptable for potable water use by the NSF.

2. Antiseize lubricant shall be "PURE WHITE" by Anti-Seize Technology, Franklin Park, IL; or approved equal.

E. Bolt Requirements:

1. The bolt and nut material shall be free-cutting steel.

2. The nuts shall be capable of developing the full strength of the bolts. Threads shall be Coarse Thread Series conforming to the requirements of the American Standard for Screw Threads. All bolts and cap screws shall have hexagon heads and nuts shall be Heavy Hexagon Series.

3. All bolts and nuts shall be installed with washers fabricated of material matching the base material of bolts, except that hardened washers for high strength bolts shall conform to the requirements of the AISC Specification. Lock washers shall

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be installed with washers where indicated and shall be fabricated of material matching the bolts.

4. The length of all bolts shall be such that after joints are made up, each bolt shall extend through the entire nut, but in no case more than 1/2 inch beyond the nut.

F. Cast-in-Place Anchor Bolts - Unless otherwise indicated, the embedded end of the anchor bolt shall be either headed or with nut and washer. Threaded dimensions for cast-in headed studs and/or headed bolts, before zinc coating, shall conform to the requirements of ANSI/ASME B1.1 having Class 2A tolerances (ANSI/ASME Standard B1.13M Grade 6g).

Use of hooked bolts (J-bolts and L-bolts) in lieu of headed studs/bolts is not permissible.

1. Equipment subject to vibration (e.g., pumps, motors, generators, etc.) shall be anchored by means of cast-in-place anchor bolts. Anchor bolt layout shall be by means of a template obtained from the equipment manufacturer or supplier.

G. Adhesive Anchors in Concrete - Unless otherwise indicated, all adhesive anchors for installation in concrete shall have satisfied the requirements of the Simulated Seismic Tests of ACI 355.4. No substitutions will be considered unless accompanied with ICC-ES report verifying strength and material equivalency and compliance with ACI 355.4.

1. Adhesive anchors shall be Hilti HIT-RE 500-V3 adhesive anchors, Simpson SET3G epoxy adhesive anchors, Dewalt Pure 110+ adhesive anchors or approved equal.

2. Use of adhesive anchors within enclosed areas subject to hydrogen sulfide build up shall be approved for use in sulfuric acid environments.

3. Adhesive anchors shall not be used for overhead installations (i.e. installations at the underside of concrete slabs).

H. Expansion (Wedge) Anchors - Unless otherwise indicated all expansion anchors for installation in concrete shall have satisfied the requirements of the Simulated Seismic Tests of ACI 355.2. Expansion Anchors shall be zinc-plated carbon steel wedge-type anchors complete with nuts and washers. Type 316 stainless steel, wedge type anchors shall be used where they will be submerged or exposed to the weather or where stainless steel wedge type anchors are required. When the length or embedment of the bolt is not noted on the Drawings, provide length sufficient to place the wedge and expansion sleeve portion of the bolt at least 1 inch behind the concrete reinforcing steel.

1. Design and installation of the expansion anchors in concrete shall comply with ACI 318 Appendix D.

2. Expansion anchors shall be Hilti Kwik Bolt TZ anchors, Simpson Strong-Tie Strong-Bolt 2 Wedge anchors, Dewalt Power-Stud+SD2 anchors, or approved equal.

3. Lead caulking anchors will not be permitted.

4. Expansion type anchors shall not be used with equipment subject to vibration (e.g., pumps, motors, etc.).

PART 3 - EXECUTION

3.01 FABRICATION AND INSTALLATION REQUIREMENTS
A. Fabrication and Erection: Except as otherwise indicated, the fabrication and erection of structural steel shall conform to the requirements of the AISC "Manual of Steel Construction."

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B. All steel surfaces that come into contact with exposed concrete shall receive a protective coating of an approved heavy bitumastic troweling mastic applied in accordance with the manufacturer's instructions before installation.

C. Where aluminum contacts a dissimilar metal, apply a heavy brush coat of zinc-chromate primer followed by two coats of aluminum metal and masonry paint to the dissimilar metal.

D. Where aluminum contacts concrete/masonry, apply one coat of TT-P-645B zinc-molybdate primer or a heavy coat of approved alkali resistant bituminous paint to the aluminum or concrete/masonry.

3.02 WELDING
A. Method - All welding shall be by the metal-arc method or gas-shielded arc method as described in the AWS 's "Welding Handbook" as supplemented by other pertinent standards of the AWS. Qualification of welders shall be in accordance with the AWS Standards governing same.

B. Welding electrodes shall meet the minimum requirements of E70XX. Filler metal for welds in moment connections shall have a minimum CVN value of 20 foot-pounds at 0 degrees F.

C. Quality - In assembly and during welding, the component parts shall be adequately clamped, supported, and restrained to minimize distortion and for control of dimensions.

Weld reinforcement shall be as indicated by the AWS Code. Upon completion of welding, all weld splatter, flux, slag, and burrs left by attachments shall be removed. Welds shall be repaired to produce a workmanlike appearance, with uniform weld contours and dimensions. All sharp corners of material that is to be painted or coated shall be ground to a minimum of 1/32 inch on the flat.

3.03 GALVANIZING
A. All structural steel plates shapes, bars, and fabricated assemblies required to be galvanized shall, after the steel has been thoroughly cleaned of rust and scale, be galvanized in accordance with the requirements of ASTM A123, except that the weight of zinc coating shall average not less than 1.2 ounce per-square-foot of actual surface area with no individual specimen having a coating weight less than 1.0 ounce per-square-foot.

The galvanizing process shall be performed in strict accordance with the requirements of ASTM A384, any galvanized part(s) that become warped as a result of the galvanizing process and/or handling shall be straightened or replaced at no additional expense to the OWNER.

B. Bolts, anchor bolts, nuts, and similar threaded fasteners, after being properly cleaned, shall be galvanized in accordance with the requirements of ASTM A153.

C. Repair of Damaged Coating:

1. The maximum area that shall be repaired shall comply with applicable sections of ASTM A123.

2. Repair areas by one of the approved methods in accordance with ASTM A780 whenever damage width exceeds 3/16 inch. Minimum thickness requirements for the repair shall be as described in ASTM A123.

3. Field repairs to galvanizing shall be made using “Galvinox”, “Galvo-Weld”, or approved equal.

3.04 POST-INSTALLED CONCRETE ANCHORS
A. Drilled anchors and reinforcing bars shall be installed in strict accordance with the manufacturer's instructions.

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B. Post-installed concrete anchors and reinforcing bars (dowels) shall be installed in strict accordance with the Manufacturer’s Printed Installation Instructions (MPII).

C. Holes shall be roughened with a brush on a power drill, cleaned, and dry.

D. Drilled anchors shall not be installed until the concrete has reached the specified 28-day compressive strength.

E. Adhesive anchors and dowels shall not be installed until the concrete has a minimum age of 21 days and has reached the specified 28-day compressive strength.

F. Adhesive anchors shall not be loaded until the adhesive has reached its indicated strength in accordance with the manufacturer's instructions.

G. Adhesive anchors and dowels installed in a horizontal or upwardly inclined position shall have the following additional requirements:

1. Installation shall be performed by personal certified in accordance with the ACI/CRSI Adhesive Anchor Certification program.

2. Installation shall be inspected by a certified special inspector who is continuously present when the installation is performed.

H. Expansion anchors shall be checked for tightness a minimum of 24 hours after initial installation. Install anchors using the manufacturer's recommended drive units and adapters and in compliance with the manufacturer's recommendations.

I. Post-installed mechanical anchors shall be checked for tightness a minimum of 24-hours after initial installation. Install anchors using the manufacturer’s recommended drive units and adapters, in compliance with the manufacturer’s recommendations.

END OF SECTION

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SECTION 09960

HIGH PERFORMANCE COATINGS
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Materials, surface preparation, application, curing and inspection on interior and exterior surfaces for industrial, high-performance coatings.

B. Furnish all labor, materials, tools and equipment required to perform surface preparation, coating work and inspection as specified. Perform all subsidiary and incidental work necessary to complete the work in conformance with the project requirements, to accomplish the approved end result of a totally protected and usable structure, including all attachments, accessories and appurtenances.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittals

2. Section 01999 – Referenced Sections

1.03 GOVERNING STANDARDS AND RECOMMENDED PRACTICES
A. Standards and recommended practices listed (including the most recent update or version) shall govern the work unless otherwise specified in these specifications.

B. ASTM – American Society for Testing and Materials

1. ASTM C308, Standard Test Methods for Working, Initial Setting, and Service Strength Setting Times of Chemical-Resistant Resin Mortars

2. ASTM C496, Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens

3. ASTM C531, Standard Test Method for Linear Shrinkage and Coefficient of Thermal Expansion of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes

4. ASTM C579, Standard Test Methods for Compressive Strength of ChemicalResistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes

5. ASTM C580, Standard Test Method for Flexural Strength and Modulus of Elasticity of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes

6. ASTM C596, Standard Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement

7. ASTM C868, Standard Test Method for Chemical Resistance of Protective Linings

8. ASTM C882, Standard Test Method for Bond Strength of Epoxy-Resin Systems Used with Concrete By Slant Shear

9. ASTM D638, Standard Test Method for Tensile Properties of Plastics

10. ASTM D790, Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

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11. ASTM D1653, Standard Test Methods for Water Vapor Transmission of Organic Coating Films

12. ASTM D4417, Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel

13. ASTM D4541, Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers

14. ASTM D4585, Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation

15. ASTM D4940, Detecting Contamination on Abrasive

16. ASTM D5402, Standard Practice for Assessing the Solvent Resistance of Organic Coatings Using Solvent Rubs

17. ASTM D6386, Standard Practice for Preparation of Zinc (Hot-Dip Galvanized) Coated Iron and Steel Product and Hardware Surfaces for Painting C. AWWA – American Water Works Association

1. AWWA D102, Standard for Painting Steel Water-Storage Tanks.

2. AWWA C652, Disinfections of Water Storage Facilities.

D. SSPC – The Society for Protective Coatings

1. SSPC- Vol. 1, Steel Structures Painting Manual, Good Painting Practice

2. SSPC- Vol. 2, Steel Structures Painting Manual, Systems and Specifications

3. SSPC-SP1, Solvent Cleaning

4. SSPC-SP2, Hand Tool Cleaning

5. SSPC-SP3, Power Tool Cleaning

6. SSPC-SP11, Power Tool Cleaning to Bare Metal

7. SSPC-SP15, Commercial Grade Power Tool Cleaning

8. SSPC-Guide 12, Illumination of Industrial Painting Projects

9. SSPC-PA 1, Shop, Field and Maintenance Painting

10. SSPC-PA 2, Measurement of Dry Coating Thickness with Magnetic Gauges

11. SSPC-PA, Guide 3 Guide to Safety in Paint Application

12. SSPC-AB1, Mineral and Slag Abrasives

13. SSPC-VIS 1, 02-12 Reference Photographs, Dry Abrasive Blast Cleaning

14. SSPC-VIS 3, 93-04 Visual Standards for Power and Hand-Tool Cleaned Steel E. NACE International – National Association of Corrosion Engineers International

1. Joint NACE/SSPC-SP5/5 NACE #1 White Metal Blast

2. Joint NACE/SSPC-SP6/NACE #3 Commercial Blast

3. Joint NACE/SSPC-SP7/NACE #4 Brush-off Blast

4. Joint NACE/SSPC-SP10/NACE #2 Near White Metal Blast

5. Joint NACE/SSPC-SP12/NACE #5 Surface Preparation and Cleaning of Metals by Water Jetting Prior to Recoating

6. Joint NACE/SSPC-SP13/NACE #6 Surface Preparation of Concrete

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7. NACE RPO178 Appendix C - Degrees of Surface Finishing of Welds

8. NACE RPO287 Field Measurement of Surface Profile

9. NACE SPO188 Discontinuity (Holiday) Testing of Protective Coatings

1.04 SUBMITTALS
A. Comply with Section 01330.

B. Include the following items:

1. Coating manufacturer’s technical data on product and recommended use. Include the brand name and series number of all coatings to be used.

2. Coating manufacturer's surface preparation criteria, including recommended surface profile range after abrasive blasting.

3. Coating manufacturer's application instructions, equipment recommendation, temperature and humidity limitations, pot life and induction requirements, drying and curing times, and recoat cycle times. List recoat times and final cure at 35° F., 45° F., 55° F., 65° F. and 75° F. substrate temperatures. Provide manufacturer’s maximum and minimum material and substrate temperatures for proper application.

4. Contractor’s written program for over spray prevention.

5. Coating manufacturer’s Material Safety Data Sheets (MSDS) for Product to be used on the project, including solvents, additives, cleaners and thinners.

6. Abrasive supplier's certification that the abrasive blast material to be provided complies with the State of California Environmental Protection Agency, Air Resources Board (CARB) and local AQMD requirements for dry outdoor blasting (See Section 2.06 Abrasives for Blast Cleaning)

7. Abrasive blast cleaning and application equipment list and complete procedures for its use.

8. Contractor’s safety program to be employed on this project which complies with the current requirements of CAL/OSHA, OSHA and this Specification.

1.05 QUALITY ASSURANCE
A. Unit Responsibility

1. Assign unit responsibility for the materials, surface preparation, and coatings application to the Coatings Application Subcontractor.

2. Provide a certificate of Unit Responsibility. See Section 01999.

B. Qualifications

1. Coatings Applicator Requirements
a. Hold a valid State of California Contractor's Class C 33 Painting and Decorating Contractors license for performing abrasive blast cleaning and coating work.
b. Minimum of five (5) years practical experience and successful history in the application of similar products on comparable projects. Substantiate this requirement by furnishing a written list of references with the bid package that includes a list of projects with verifiable coating inspection reports.

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2. Coatings Applicator Personnel
a. Provide a supervisor at the work site during cleaning and coating operations.
b. Provide skilled personnel qualified to perform work to industry standards of practice and safety, maintain continuity of personnel, and coordinate transfer of personnel with the Construction Manager.

C. Pre-Construction Conference

1. Schedule pre-construction conference with the Construction Manager.

2. Do not proceed without holding a pre-construction conference with the Construction Manager, Contractor, Inspector, Fabricator, Coating Applicator and Manufacturer.

3. Topics for discussion include:
a. Site conditions
b. Coating materials and manufacturer's application recommendations. c. Surface preparation prior to abrasive blast cleaning. d. Specification compliance of blast abrasives and surface profile requirements.
e. Schedule of field surface preparation and coating application, and order of the work.
f. List of equipment and procedures for cleaning, blasting, coating application, ventilation and dehumidification (if required). g. Safety programs and the enforcement to be used during the course of the work.
h. Weather limitations for acceptable work.
i. Inspection facilities and equipment to be provided.
j. Hold points and inspector’s authority.
k. Establish non-conformance procedures, and chain of command and who signs off on completion of bringing the job back into compliance. l. Procedures for over-spray prevention.

1.06 PRODUCT SHIPMENT, PROTECTION, AND STORAGE
A. Delivery

1. Deliver in original sealed containers identified with labels indicating manufacturer; product name and number; color, batch or lot number; and date of manufacture.

2. Note the date of manufacture and apply coatings prior to the expiration of the guaranteed storage life.

3. Coating materials exceeding storage life will be rejected.

B. Storage

1. Store coating materials in enclosed structures to protect from weather and excessive heat or cold.

2. Coatings stored at above or below manufacturers recommendations will be rejected.

3. Comply with state and local requirements for flammable materials.

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1.07 WARRANTY
A. Provide material and workmanship warranty for coatings of 18 months from date of final acceptance by the City
B. Complete the Extended Warranty Form in Section 01999.

C. See also Paragraph 3.17.

PART 2 - PRODUCTS

2.01 MANUFACTURERS
A. A. Specified products of the following manufacturers have been approved:

1. Tnemec Company Inc.

2. International Protective Coatings (IPC)

3. Dunn-Edwards Paints (D-E)
B. Products of other manufacturers demonstrating equivalence to performance requirements specified in Paragraph 2.02 will be allowed, subject to compliance with Section 01330.

2.02 COATING SYSTEMS
A. General Requirements

1. For all materials of a specified system including primer, touch-up, intermediate, and finish coats, provide products by the same manufacturer. Use thinners, cleaners and other additives as recommended in writing by the coating manufacturer for the specified system.

2. Coating materials, including additives, for interior potable water contact surfaces. a. Must appear in the current ANSI/NSF Standard 61 "Listing of Certified Drinking Water System Components Health Effects", as published by NSF International (NSF).
b. Comply with regulations and applicable requirements of local, State and federal air quality and health regulatory agencies.

3. Use only coatings which are free of asbestos, lead, cadmium, and chromate.

4. Comply with local AQMD rules and regulations.

5. No request for product substitution will be considered which decreases the dry-film thickness designated, the number of coats to be applied, or which changes the generic type of coating specified.

6. Requests for Substitution
a. Include the full name of each product, descriptive literature, test data, data on past performance, manufacturer's instruction for use, generic type, and its nonvolatile content by volume.
b. Demonstrate product and performance is equivalent to the specified materials and complete systems.
c. Comply with Section 01330.

7. Demonstrate that the coatings manufacturer has local representation which will provide onsite technical support to resolve field problems with the manufacturer's products, materials or application for the duration of the project.

8. Do not purchase or deliver coating materials to the site before the review and written acceptance of the proposed materials by the Construction Manager.

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B. Coating Systems for Steel – Severe Service, Exposed or Immersed (Non-Potable).

1. System E-2 High Solids Epoxy – One Prime/Two Finish. a. Steel surfaces shall be abrasive blasted in compliance with SSPC-SP 10/NACE No. 2 Near White Metal Blast Cleaning. Obtain an anchor pattern between 1.5 and 2.0 mils. See Paragraph 2.02.C.4 for surface preparation of ductile iron pipe or cast iron surfaces. b. Primer: Shop or Field applied two-component polyamidoamine epoxy.

Product: Tnemec Series V69F-1211, IPC Interseal 670 or equal applied at

4.0 to 6.0 dry mils.
c. Intermediate: Field applied two-component polyamidoamine epoxy.

Product: Tnemec Series V69F-Color, IPC Interseal 670 or equal applied at 4.0 to 6.0 dry mils.
d. Stripe Coat: Field-applied, two-component polyamidoamine epoxy.

Product: Tnemec Series V69F-Color, IPC Interseal 670 or equal applied, or equal applied at 1.0 to 2.0 dry mils to all welds and sharp edges per SSPC-PA 1, 6.6 Striping, 7.4.6 Application Method (Brush). e. Finish: Field applied two-component polyamidoamine epoxy. Product:

Tnemec Series V69F-Color, IPC Interseal 670 or equal applied at 4.0 to

6.0 dry mils.

2. System E-3 High Solids Epoxy – One Prime/One Finish. a. Steel surfaces shall be abrasive blasted in compliance with SSPC-SP 10/NACE No. 2 Near White Metal Blast Cleaning. Obtain an anchor pattern between 1.5 and 2.0 mils. See Paragraph 2.02.C.4 for surface preparation of ductile iron pipe or cast iron surfaces. b. Primer: Shop or Field applied two-component polyamidoamine epoxy.

Product: Tnemec Series V69F-1211, IPC Interseal 670 or equal applied at

4.0 to 6.0 dry mils.
c. Stripe Coat: Field-applied, two-component polyamidoamine epoxy.

Product: Tnemec Series V69F-Color, IPC Interseal 670 or equal applied, or equal applied at 1.0 to 2.0 dry mils to all welds and sharp edges per SSPC-PA 1, 6.6 Striping.
d. Finish: Field applied two-component polyamidoamine epoxy. Product:

Tnemec Series V69F-Color, IPC Interseal 670 or equal applied at 4.0 to

6.0 dry mils.

3. System E-4 - 100% Solids Epoxy (High H2S Exposure).
a. Steel surfaces shall be abrasive blasted in compliance with SSPC-SP 5/NACE No. 1 White Metal Blast Cleaning. Obtain an anchor pattern between 3.0 and 4.0 mils. Do not use this coating for ductile iron pipe or cast iron surfaces.
b. Stripe Coat: Field-applied, two-component polyamine epoxy. Product:

Tnemec Series 435 Perma-Glaze, no known equal, applied at 8.0 to 12.0 dry mils to all welds and sharp edges per SSPC-PA 1, 6.6 Striping, 7.4.6 Application Method (Brush). Stripe Coat shall be followed immediately by Finish Coat application; “wet on wet”.
c. Finish: Field applied two-component polyamine epoxy. Product: Tnemec Series 435 Perma-Glaze, no known equal applied pinhole free at 30.0 to

40.0 dry mils in one or two coats.

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4. Surface Preparation for Ductile Iron Pipe or Cast Iron surfaces a. Solvent Cleaning
1) Surfaces shall first be inspected and precleaned with appropriate solvents to remove grease, oil and other soluble contaminants. 2) The preferred method of precleaning is through scrubbing of the surface with still bristle brushes soaked in solvent.
3) Prior to evaporation remove solvent by wiping with clean, lint-free cloth rags.
4) Remove rag residue (if any) with dry, oil-free compressed air. b. Surface Profile
1) Measure surface profile (anchor pattern) in accordance with ASTM D4417, Method C.
2) If surface profile is less than 1.5 mils then proceed with brush-off blast cleaning in accordance with No. 4.c below.
3) If surface profile is 1.5 mils or greater then proceed with hand or power tool cleaning in accordance with No. 4.d.
c. Brush-Off Blast Cleaning
1) Remove all loose annealing oxides, loose rust, dirt and other foreign matter by compressed air nozzle abrasive blast cleaning using a fine abrasive.
2) Remove any dust or other contaminants remaining after blasting with dry, oil-free compressed air or by vacuum cleaning. 3) Recheck surface profile prior to painting.
4) A profile depth of at least 1.5 mils is required.
d. Hand or Power Tool Cleaning
1) Remove all loose annealing oxides, loose rust, dirt and other foreign matter with the use of hand or power tools.
2) Do not use cleaning tools that burnish or smooth the natural roughness (profile) of the cast iron surface.
3) Remove any dust or other contaminants remaining after hand or power tool cleaning with dry, oil-free compressed air or by vacuum cleaning.

C. Coating Systems for Steel-Exterior Exposure.

1. System U-1 Bare Steel - Acrylic Urethane.
a. Steel surfaces shall be abrasive blasted in compliance with SSPCSP6/NACE No. 3 Commercial Blast Cleaning. See Paragraph 2.02.D.3 for surface preparation of ductile iron pipe.
b. Prime: Shop or Field applied two-component polyamidoamine epoxy.

Product: Tnemec Series V69F-1211, IPC Interseal 670 or equal applied at

4.0 to 6.0 dry mils.
c. Intermediate: Field applied two-component polyamidoamine epoxy.

Product: Tnemec Series V69F-Color, IPC Interseal 670 or equal applied at 4.0 to 6.0 dry mils.
d. Stripe Coat: Field-applied, two-component polyamidoamine epoxy.

Product: Tnemec Series V69F-Color, IPC Interseal 670 or equal applied, or equal applied at 1.0 to 2.0 dry mils to all welds and sharp edges per SSPC-PA 1, 6.6 Striping, 7.4.6 Application Method (Brush).

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e. Finish: Field-applied, semi-gloss polyurethane. Product: Tnemec Series 1075-Color Endura-Shield II applied at 3.0 to 5.0 dry mils in one to two coats, IPC Interthane 990 applied at 3.0 to 5.0 dry mils in two or more coats, or equal.

2. System U-2 Overcoat - Acrylic Urethane.
a. Previously painted steel surfaces shall be cleaned in compliance with SSPC-SP 12/NACE No. 5 Surface Preparation of Metals by Water Jetting Prior to Recoating (HP WC) at pressures of 5,000 to 7,000 psi using a zero degree revolving tip.
1) Coatings remaining after being subjected to above shall be uniformly and thoroughly scarified to create a profile using 80 to 100 grit sandpaper.
b. Hot-dipped galvanized components shall be cleaned per SSPC-SP1 Solvent Cleaning followed by SSPC-SP7/NACE No. 4 Brush-Off Blast Cleaning in compliance with ASTM D6386-99(2005) Section 5.4.1, providing a surface profile of 1.5 to 2.0 mils for interior surfaces and a surface profile of 1.0 to 1.5 mils for exterior surfaces. c. See Paragraph 2.02.D.3 for surface preparation of ductile iron pipe. d. Spot Prime: Field-applied, two-component epoxy. Product: Tnemec Series 135 Chembuild, IPC Interseal 670 HS or equal at 4.0 to 6.0 dry mils to all bare steel, overlapping adjacent coating by 2 to 4 inches. e. Full Prime: Field-applied, two-component epoxy. Product: Tnemec Series 135 Chembuild-32GR Light Gray, IPC Interseal 670 HS or equal at 4.0 to

6.0 dry mils.
f. Finish: Field-applied, semi-gloss polyurethane. Product: Tnemec Series 1075-Color Endura-Shield II, IPC Interthane 990 or equal applied at 2.0 to

3.0 dry mils.

3. Surface Preparation for Ductile Iron Pipe
a. Solvent Cleaning
1) Surfaces shall first be inspected and precleaned with appropriate solvents to remove grease, oil and other soluble contaminants. 2) The preferred method of precleaning is through scrubbing of the surface with still bristle brushes soaked in solvent.
3) Prior to evaporation remove solvent by wiping with clean, lint-free cloth rags.
4) Remove rag residue (if any) with dry, oil-free compressed air. b. Surface Profile
1) Measure surface profile (anchor pattern) in accordance with ASTM D4417, Method C.
2) If surface profile is less than 1.5 mils then proceed with brush-off blast cleaning in accordance with No. 3.c below.
3) If surface profile is 1.5 mils or greater then proceed with hand or power tool cleaning in accordance with No. 3.d.
c. Brush-Off Blast Cleaning
1) Remove all loose annealing oxides, loose rust, dirt and other foreign matter by compressed air nozzle abrasive blast cleaning using a fine abrasive.
2) Remove any dust or other contaminants remaining after blasting with dry, oil-free compressed air or by vacuum cleaning. 3) Recheck surface profile prior to painting.

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4) A profile depth of at least 1.5 mils is required.
d. Hand or Power Tool Cleaning
1) Remove all loose annealing oxides, loose rust, dirt and other foreign matter with the use of hand or power tools.
2) Do not use cleaning tools that burnish or smooth the natural roughness (profile) of the cast iron surface.
3) Remove any dust or other contaminants remaining after hand or power tool cleaning with dry, oil-free compressed air or by vacuum cleaning.

D. Coating Systems for New Concrete in Severe Service (High H2S Exposure).

1. System E-5 100% Solids Fiber Reinforced Epoxy.
a. All vertical and overhead concrete surfaces shall be abrasive blasted in compliance with SSPC-SP13/NACE No. 6 Surface Preparation of Concrete, ICRI CSP5. All concrete floor surfaces shall be abrasive blasted in compliance with SSPC-SP13/NACE No. 6 Surface Preparation of Concrete, ICRI CSP3.
b. Surfacer: Field applied three-component epoxy mortar. Product: Tnemec Series 218 MortarClad, or equal applied void-free at 1/16” to all vertical and overhead concrete surfaces. Patch and fill voids on floor as required. c. Primer (Floor Only): Field applied two-component 100% solids epoxy.

Product: Tnemec Series 201 Epoxoprime, or equal applied at 6.0 to 12.0 dry mils.
d. Finish: Field applied two-component fiber reinforced polyamine epoxy.

Product: Tnemec Series 436 Perma-Glaze FR, no known equal, applied pinhole free at 60.0 to 70.0 dry mils in one coat to all concrete surfaces. e. For areas inaccessible by spray, use Tnemec Series 435 Perma Shield (E-4), no known equal, applied pinhole free at 30.0 to 40.0 dry mils in two coats or more to all concrete surfaces.

E. Coating Systems for New Concrete, Interior – Non-Immersion.

1. System E-6 Aliphatic Amine Epoxy for Interior PIP Concrete. a. All concrete surfaces shall be prepared in compliance with SSPC SP13/NACE No. 6 Surface Preparation of Concrete, ICRI CSP 3. b. Filler: Field applied three-component epoxy mortar. Product: Tnemec Series 218 MortarClad, or equal. Patch and fill voids as required. c. Prime: Field applied two-component aliphatic amine epoxy. Product:

Tnemec Series 84 Ceramlon ENV, IPC Interseal 670 HS or equal applied at 3.0 to 8.0 dry mils.
d. Finish: Field applied two-component aliphatic amine epoxy. Product:

Tnemec Series 84 Ceramlon ENV, IPC Interseal 670 HS or equal applied at 6.0 to 8.0 dry mils.

2. System S-1 Clear Silicate Sealer / Densifyer for Interior Concrete Floors. a. Surfaces shall be power-wash cleaned per SSPC-SP12/NACE No. 5 (LPWC).
b. Sealer: Field applied one-component clear silicate sealer. Product:

Tnemec Series 629 CT Densifyer or equal, applied in one coat by low pressure spray at a spread rate of 300 to 350 square feet per gallon. Do not allow puddles to remain on surface.

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F. Coating System for Buried Ferrous Metal

1. System M-1 Petrolatum Based Wrapping Tape
a. Comply with AWWA C-217, as modified by this specification. b. Clean surfaces per SSPC-SP2 Hand Tool and/or SP3 Power Tool Clean. c. Prime Paste
1) Field apply as recommended by tape manufacturer.
2) Hand rub or brush all surfaces with priming paste.
3) Liberally apply priming paste to sharp projects such as threads, irregular contours, or badly pitted areas to ensure maximum protection of metal throughout.
d. Treat irregularly shaped surfaces such as nuts, bolts, flanges and valves per one of the following two methods:
1) Apply recommended mastic by hand in sufficient quantity to build an even contour over entire surface. Ensure that all folds and air pockets within the mastic layer are thoroughly pressed out prior to subsequent application of tape.
or
2) Cut and carefully mold an extra layer of tape around all sharp projections, nuts, bolts, etc., before final application of tape to meet specified system thickness.
e. Tape
1) Spirally wrap with a 55% overlap and sufficient tension and pressure to provide continuous adhesion without stretching the tape.
2) Continuously smooth and seal by hand the edges of tape by hand during wrapping.
3) On vertical applications, begin at bottom and proceed upward, creating a weather board overlap.
f. Minimum Finished Thickness
1) Smooth contours: 50 mils.
2) Irregular shaped surfaces: 100 mils.

G. Coating System for Concrete Surfaces in Chemical Storage Areas

1. System E-8 Polyamine Novolac Epoxy for Interior Walls and Floors a. Applicability: Reinforced concrete floors; exposed surfaces of tank housekeeping pads; interior faces of containment walls including integral column bases, full height; drainage groove and sump; and grout pads. b. Surface Preparation: Abrasive blast or equivalent all specified surfaces to remove laitance, form release agents, curing compounds, sealers and other contaminants and to provide surface profile in accordance with SSPC SP12/NACE 6, ICRI CSP3-5 and with Tnemec recommendations. c. Patch & fill: MortarClad Series 218; apply a full parge coat to all specified surfaces at a thickness of 1/32”, filling voids up to ¼” deep. d. First Coat: Tneme-Glaze Series 282-Color; apply 6.0 to 12.0 mils DFT (Horizontal) 4.0 to 8.0 mils DFT (Vertical) to all specified surfaces per Tnemec recommendations.
e. Second Coat: Tneme-Glaze Series 282-Color; apply 6.0 to 12.0 mils DFT (Horizontal) 4.0 to 8.0 mils DFT (Vertical) to all specified surfaces per Tnemec recommendations.

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2.03 ABRASIVES FOR BLAST CLEANING
A. Use only new materials that are clean and free of contaminants.

B. Certified by the California Air Resources Board (CARB) for use in dry, open air abrasive blasting.

C. Comply with all applicable requirements of the local Air Quality Management District.

D. Purchase only from firms which can accept spent abrasives, then process spent abrasives for recycle or proper disposal.

2.04 DISINFECTION MATERIALS
A. Comply with AWWA Standards.

PART 3 - EXECUTION

3.01 PROTECTION OF THE WORK
A. Techniques

1. Use coverings or drop cloths to protect floors, concrete, appurtenances, equipment, prepared surfaces and applied coatings or paints.

2. Take precautions to prevent damage or contamination of coated surfaces from personnel entering containment areas or walking near coated surfaces.

3. Exercise care to prevent coating from being spattered onto surfaces that are not to be coated.

4. Recoat surfaces from which such material cannot be removed satisfactorily to produce a finish satisfactory to the Construction Manager.

B. Where protection is required or provided for coated surfaces, maintain protection until the coating film has properly cured.

C. Do not handle, work on or otherwise disturb coated areas until the coating has cured to “dry to handle”.

3.02 SAFETY AND HEALTH REQUIREMENTS
A. General

1. Comply with the applicable health and safety requirements of CAL/OSHA, State of California Construction Safety Orders, and the recommendations of the product manufacturer.

2. Provide and require the use of proper personal protective and life saving equipment for all persons visiting or working in or about the project site.

B. Ventilate work areas to control potential exposure and hazard to workers and employees of the plant.

1. Ventilation System
a. Furnish and install in accordance with these specifications. b. Modify as directed by the supplier of the equipment, to insure a safe working environment and provide complete removal of all solvent vapors. c. Equipment: Explosion proof, of industrial design, and of adequate capacity to reduce the concentration of air contaminants to the degree that a hazard to workers or employees of the plant does not exist.
d. Size ventilation system to maintain air changes within the confined space per CAL/OSHA regulations.

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2. Remove contaminated air, vapors, and other potential hazardous substances from the confined space.

3. Forced air ventilation during blast cleaning, abrasive removal, coating application, and curing is mandatory in confined spaces.

C. Confine blasting debris and paint over spray to within the bounds of the site.

1. Prevent adverse offsite consequences from the blasting and coating operations.

2. Complaints received by the Construction Manager regarding potential off site problems will be immediately referred to the Contractor for resolution. a. Immediately halt work and take corrective action required to mitigate such problems.
b. Protect site properties and/or correct damage to property caused by blasting or coating operations at no additional cost to the Owner.

D. Abrasive Blasting

1. Provide and require workers to use approved supplied air protective abrasive blasting hoods.

2. Require workers to wear protective hoods while in the immediate vicinity of the blasting work.

3. During abrasive blasting operations, require the nozzle person(s) to wear U.S.

Bureau of Mines approved blasting hoods at all times.

4. Require other personnel in the vicinity of the blasting work, who may be exposed to blasting dust, to wear approved renewable cartridge filter type respirators and plastic safety goggles.

5. Paper dust masks or standard glasses are not acceptable protection.

E. Coating Application

1. When coatings are applied in confined areas, require all personnel directly exposed to coating vapors to wear OSHA approved air supplied hoods.

2. Paper dust masks or standard glasses are not acceptable protection.

3. During the mixing and application of coatings and paints, prohibit all flames, welding and smoking within fifty (50) feet of the work area.

4. Post "No Smoking" signs in appropriate places to warn visitors and workers of the no smoking area.

F. Illumination

1. Provide spark proof artificial lighting for all work in confined spaces.

2. Equip light bulbs with a protective cage to prevent breakage.

3. For lighting fixtures and bulbs, comply with the requirements of Section 70 of the National Fire Protection Association (NFPA), "National Electric Code", for the applicable atmosphere.

4. For lighting and other electrical systems, provide ground fault type, complying with NFPA 70.

5. As directed by the Construction Manager, provide additional illumination: to fully illuminate all areas to be inspected. Level of illumination: As determined by the Construction Manager and as specified.

6. Provide a minimum of 50 foot candles of illumination during all surface preparation and coatings application. Comply with SSPC – Guide 12.

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G. Ground all blasting, spray and air hoses to prevent accumulation of static electric charges.

Use heavy duty industrial insulated electrical cords with twist lock type connectors.

H. Abrasive Blasting Nozzles

1. Equip with "deadman" emergency shut off switches. Keep switches properly maintained and in working order whenever abrasive blasting is in progress.

2. Wrap all abrasive blast hose connections with duct tape prior to pressurizing. a. Visually inspect taped connections for leaks at the start and at the conclusion of blast cleaning operations.
b. Immediately repair leaking connections to prevent further damage to the equipment or injury to personnel.

I. Solvents

1. The solvents used with the specified protective coatings are explosive at low concentrations and are highly toxic to humans.

2. Because of toxicity, keep the maximum allowable concentration of vapor below the maximum safe concentration level as defined by CAL/OSHA.

3. In addition, never exceed Lower Explosive Limit in the confined space.

4. Comply with all regulations, manufacturer's recommendations, and directives from the Owner, related to safety of personnel and the handling of the coating materials.

J. Fire Extinguishers

1. Keep a minimum of two (2) ten pound (10lb) ABC type fire extinguishers present in the work area whenever work is proceeding.

2. Train all personnel in the use of this type of fire extinguisher.

K. Noise

1. Whenever the occupational noise exposure exceeds the maximum allowable sound level as set forth by CAL/OSHA regulations or the regional Air Pollution Control District, provide and require the use of approved ear protection devices.

2. General maximum sound levels for the project are defined as those which will not affect routine facility or neighborhood activities.

3. Whenever levels are objectionable, or exceed these limits, adjust operations to reduce noise levels, as directed by the Construction Manager or the local agency of jurisdiction.

L. Ladders, Scaffolding and Rigging

1. Design for their intended use.

2. Comply with all requirements of CAL/OSHA regulations.

3. Erect where requested by the Construction Manager to facilitate inspection and move to the locations requested by the Construction Manager.

4. Equip scaffolding with proper "outriggers", cross bracing, handrails, ladders, and CAL/OSHA approved and tested planking.

M. Follow carefully the manufacturer's recommendations, precautions, and warnings regarding the handling and use of specified cleaning and coating materials.

1. Coating materials may be irritating to the skin and eyes, and may cause an allergic reaction in certain persons.

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2. When handling and mixing coatings and paints, require workers to wear proper protective clothing and equipment, including gloves, respirators and eye protection.

3. Identify flammability, toxicity, allergenic properties, and any other characteristic requiring field precautions and follow specific safety practices recommended by manufacturer.

N. Remove spent abrasives and other debris.

1. Comply with requirements of all regulatory agencies for handling and disposing of such wastes.

3.03 CONDITION OF EQUIPMENT
A. Use coating equipment designed for application of the material specified and maintain in good working condition at all times.

1. Equip compressors with suitable traps and filters to remove water, dust and oils from the air.

2. Conduct blotter or white cloth tests in the presence of the Construction Manager at each start-up period or as deemed necessary by the Construction Manager.

3. Verify cleanliness of compressed air supply daily, or as deemed necessary by the Construction Manager.
a. Direct a stream of air, without abrasive, from the blast nozzle onto a white blotter or cloth for twenty (20) seconds.
b. If oil or water appears on the blotter or cloth, blow down all traps and separators until two (2) subsequent twenty (20) second tests show no further oil or water.
c. Use a compressed air system capable of delivering a continuous nozzle pressure to achieve the required surface cleanliness and profile, typically 90 pounds per square inch (psi) minimum to each nozzle in operation.

B. Compressed Supplied Breathing Air

1. For respiratory protection devices, meet Compressed Gas Association, Inc.

Specification G-7 for Grade D breathing air.

2. Design and locate breathing air compressors to prevent avoid entry of contaminated air into the air supply system.

3. Equip oil lubricated compressors with an in line air purification system that includes air-purifying absorbent beds and filters that remove water, dust particles, odors, oil, and other hydrocarbons. Also include carbon monoxide sensor and alarm.

4. Provide written certification that the breathing air supplied by the compressors has been tested and the air complies with Specification G-7 Grade D.

3.04 LIMITATIONS ON ABRASIVE BLAST CLEANING
A. Do not blast clean when conditions would not permit the subsequent application of coating.

B. Prepare surfaces to acceptable limits of good painting practice, after completion of surface preparation and before corrosion or recontamination occurs.

C. Surfaces prepared under temperature and humidity control may use an extended recoat window but only after surface preparation re inspection confirms the specified cleanliness.

D. In the event that a cleaned surface colors, oxidizes, or becomes moist, blast clean again and secure inspection/approval from Construction Manager before applying the coating.

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3.05 ABRASIVE BLAST CLEANING
A. Use dry method field abrasive blast cleaning for all steel surfaces. Maintain dust emissions below the legal limit and below a level which would create a nuisance.

B. Prior to abrasive blasting, remove all weld splatter by mechanical means. Comply with NACE Weld Designation D, per RP0178-95.

C. Pre-clean per SSPC-SP1 and as approved by Construction Manager prior to abrasive blasting.

1. Clean surfaces until free of dirt, mildew, grinding/welding/cutting debris and visible contaminants.

2. Keep surface clean and dry prior to the abrasive blasting operation.

3. Keep surface temperature 5 degrees above the dew point.

D. After completion of blast cleaning work, sweep, collect, and remove all debris and waste materials from the work area as specified. Keep the area of the work in a clean condition and do not permit blasting particles to accumulate and create a nuisance or hazard.

E. Use the maximum particle size recommended by the manufacturer to produce the specified surface profile, as recommended by the manufacturer, subject to approval of the Construction Manager.

F. Evaluation of surface preparation will be based upon comparison with the latest revisions of the "Visual Standard for Abrasive Blast Cleaned Steel Surfaces", Steel Structures Painting Council (SSPC) VIS 1 02 -12.

G. Perform blast cleaning from rolling scaffolds only within confines of interior perimeter of scaffold.

1. Reaching beyond limits of perimeter will be allowed only if blast nozzle is maintained in a position, which will produce a profile acceptable to the Construction Manager.

2. Proper position for the blast nozzle is a perpendicular angle to the flat surface of the work to be blasted.

H. During abrasive blasting and cleaning operations, do not expose existing and new, previously placed coatings to abrasion from blast cleaning operations.

1. Program and coordinate cleaning and coating operations so that dust, dirt, grit, etc., will not damage or fall upon wet or newly coated surfaces.

2. Restore any damaged coatings to their specified condition.

I. Interior Remedial Work

1. Perform by spot blast cleaning the defective areas.

2. Thoroughly abrade or scarify coating adjacent to the defective area to ensure the repair coating being applied will have satisfactory adhesion to the completely cured existing coating.

3. Upon completion of the repair work, check repaired areas within holiday detector and perform additional repair work as required.

J. Do not distribute spent abrasives on the job site or surrounding properties.

1. Clean, remove from site, and dispose of spent abrasives and other debris.

2. Comply with the requirements of all regulatory agencies for handling and disposing of such wastes.

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K. After blast cleaning and prior to application of coating, dry clean surfaces to be coated by dusting, sweeping, and/or vacuuming to remove residue from blasting.

3.06 LIMITATIONS ON THE APPLICATION OF COATINGS
A. Do not apply any coating outside the limits recommended by the manufacturer without written approval by the Construction Manager.

B. Weather Condition Restrictions

1. Do not apply any coating when the surrounding air temperature or the temperature of the surface to be painted is below forty five (45) degrees F or in excess of one hundred and twenty (120) degrees F.

2. Do not apply any coating when the temperature of the material to be applied is less than fifty (50) degrees F or more than one hundred (100) degrees F.

3. Do not apply any coating to wet, moist, or damp surfaces, or during snowy, rainy, foggy, or misty conditions, or when the relative humidity exceeds eighty five (85) percent, or when the ambient air temperature is less than five (5) degrees F above the dew point.

4. Do not apply any coating when it is expected that the relative humidity will exceed eighty five (85) percent or that the ambient air temperature will drop below forty five (45) degrees F within eight (8) hours after the application of the coating.

5. Do not apply any coating when the surface temperature is expected to drop to less than 5 degrees F above the dew point within eight hours after application of coating.

6. Do not apply any coating when wind speed exceeds fifteen (15) miles per hour in the immediate coating area.

C. The Construction Manager may require the Contractor to roll the coatings if high winds create the potential for damage to surrounding property by airborne paint particles. This does not reduce the Contractor’s responsibility for any damage to property caused by blast cleaning or painting operations.

1. If above conditions are prevalent, delay or postpone the coating application work until conditions are favorable.

2. Anticipate dew or moisture condensation and if such conditions are prevalent, delay coating work until midmorning to be certain that the surfaces are dry.

3. Complete each day's coating work in time to permit the film sufficient drying time, per manufacturer’s recommendations, and prior to subjecting coatings to potentially damaging climatic conditions.

D. The Construction Manager may utilize psychrometers and other measuring gauges at the work site to monitor climatic conditions. Repair coatings damaged by a change in climatic conditions. As directed by the Construction Manager, restore coating to specified requirements at no cost to the Owner.

3.07 PROCEDURES FOR THE APPLICATION OF COATINGS
A. Contact the Construction Manager to schedule inspection and approval of prepared surfaces prior to each application of coating materials.

1. The Construction Manager may order the removal of any coatings applied by the Contractor prior to inspection and approval.

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2. If so ordered by the Construction Manager, remove coatings, prepare surfaces, schedule inspection, obtain approval, and reapply coating. Perform work at no additional cost to the Owner.

B. After blast cleaning and prior to application of coatings and paintings, clean the surfaces to be coated by air blowing with clean dry air, dusting, sweeping, or vacuuming to remove any residue from blasting as directed by the Owner.

C. Remove and reapply any coating applied to an improperly prepared surface. Perform this work to the satisfaction of the Construction Manager and at no additional cost to the Owner.

D. Follow the recommendations of the coating material manufacturer including the selection of application equipment, thinners, mixing, drying time, temperature and humidity of application, and safety precautions. Address any conflicts between coating manufacturer’s recommendations and requirements in this specification at the Pre-Construction Conference meeting and resolve at that time.

E. Properly cure and clean any surface which will receive subsequent coating layers. Remove over spray from previous coats, dirt or dust accumulation, or scuff marks from worker traffic.

F. Comply with SSPC PA 1 for all coating and painting application work.

G. Stir and strain as required, and keep coating materials at a uniform consistency during application.

H. Use a different shade or tint (or as selected by Construction Manager) on succeeding coating or painting applications to indicate coverage.

1. Apply each coating evenly, free of sags, runs, and other evidence of poor workmanship.

2. Produce finished surfaces free from holidays, defects, or blemishes.

I. Difficult Surfaces

1. Includes all interior steel surfaces, all welds, sharp edges, nuts, bolts irregular surfaces.

2. Other difficult surfaces include, but are not limited to, welds, roof lap seams, nuts, bolts, ends and flanges of rafters, or other irregular shapes.

3. To insure complete coverage, brush coat the specified material per SSPC-PA 1,

6.6 Striping, 7.4.6 Application Method (Brush).

4. Brush coating in multiple directions to insure penetration and coverage.

J. Thinners

1. Do not use thinners unless recommended by the coating manufacturer.

2. If thinning is allowed, do not exceed the maximum allowable amount of thinner per gallon of coating material.

3. Do not reduce coating materials more than is absolutely necessary to obtain the proper application characteristics.

4. Materials thinned to achieve proper application characteristics must still meet the specified minimum dry film thickness.

5. Do not use any coatings which have been so severely modified or thinned that their application would cause established VOC limits to be exceeded. Contractor is responsible for any fines, costs, required remedies, or legal action and costs which may result from exceeding VOC limits.

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K. Spraying

1. Hold the spray nozzle perpendicular and sufficiently close to surfaces being coated to avoid excessive evaporation of volatile constituent and loss of material into the air or the bridging of cracks and crevices.

2. Use a spray technique that will result in a film free of fog, spatter or over spray.

3. Reaching beyond limits of scaffold perimeter will not be permitted.

4. Remove all over spray as directed by the Construction Manager.

5. Approval of Contractor’s over spray prevention procedures and Construction Manager’s presence on project site does not free Contractor from responsibility for over spray.

6. Obtain Construction Manager’s approval of procedures will be required prior to start of spray operations.

L. Drying Time

1. Strictly observe manufacturer’s printed instructions for drying time between coats and time between applications of coats.

2. If the recommended minimum or maximum recoat time is violated, prepare the surface as directed by the coating manufacturer.

M. Dry Film Thickness

1. Apply coating systems within the specified minimum/maximum range dry-film thickness as measured from above the peaks of the surface profile.

2. Measure per SSPC-PA 2 and correct for the magnetic effect of the surface profile.

N. Cleaning Cast Iron

1. Clean per SSPC-SP1 by thorough scrubbing with stiff bristle brushes soaked in solvent.

2. Brush-off blast cleaning may be necessary in order to provide a minimum surface profile of 1.5 mils.

3. Once a 1.5 mil profile (or greater) is verified, hand or power tool clean (reference SSPC-SP2/SP3) but do not use cleaning tools that burnish or smooth the natural roughness (profile) of the cast iron surface.

4. Remove any dust or other contaminants remaining after hand or power tool cleaning with dry, oil free compressed air or by vacuum cleaning.

5. It is not the intent to remove the annealing.

6. If the cast iron has bituminous coating, trace amounts may remain in the pours of the cast iron.

O. Do not break down kits. Do not mix partial kits.

P. Produce coating termination and transition details per manufacturer’s recommendations.

3.08 FIELD QUALITY CONTROL
A. Inspection

1. All materials and work are subject to inspection by the Construction Manager.

Unless otherwise noted herein, the Owner will pay the cost of 3rd party inspection.

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2. The Construction Manager may perform inspection on all phases of the surface preparation, abrasive blast cleaning, and application of the coating and painting systems.

3. Provide all inspection equipment including that which may be operated by the Construction Manager. The Construction Manager may elect to use his own equipment.

4. Use quality assurance procedures and practices to monitor all phases of surface preparation, application and inspection throughout the duration of the project.

Procedures or practices not specified may be utilized if they meet appropriate professional standards and are approved by the Construction Manager.

5. Comply strictly to specified quality of materials, workmanship, and diligent execution of the contract. Contractor’s use of a consultant to inspect the work does not reduce or alter Contractor’s responsibility for the quality control, and quality assurance, or other requirements of the contract.

6. Work performed in the absence of the Construction Manger’s inspection is at the risk of the Contractor.
a. After written notice from the Construction Manager, the Contractor may be required to remove and replace the uninspected work.
b. The entire cost of removal and replacement of uninspected work, including the cost of any materials furnished by the Owner and used in the work thus removed, is the responsibility of the Contractor, regardless of whether or not the work removed is found to be defective.

7. Provide, as a minimum, 200 foot candles of illumination for all inspection. Comply with SSPC – Guide 12.

3.09 FINISH SCHEDULE
A. Specific coating systems, colors and finishes for rooms, galleries, piping, equipment, and other items which are painted or have other finishes are specified in the following coating systems schedule. After approval of coatings, submit draw downs of all the specified colors to the Construction Manager for final color approval using the appropriate finish coating.

B. Unless otherwise specified in the coating system schedule, the word “interior” means the inside of a building or structure and the word “exterior” means outside exposure to weather elements.

C. If surfaces are not specified in the LOCATION SPECIFIC FINISH SCHEDULE, finish according to the following GENERAL FINISH SCHEDULE:

3.10 GENERAL FINISH SCHEDULE

SURFACE SYSTEM COLOR
A. Equipment and Metal Appurtenances

1. Equipment, equipment supports, mounting
stands, utility stations, non-immersed, nonstainless, non-ferrous metals, unless otherwise specified.
— —
a. Interior U-1 Match
adjacent
piping
b. Exterior U-1 See Note 1

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SURFACE SYSTEM COLOR

2. Equipment, immersed or high spray, unless
otherwise specified.
— —
a. Potable (NSF) E-1 See Note 1
b. Non-potable UI-5 See Note 1

3. Existing equipment not damaged or modified
by work in this contract
Uncoated —

4. Existing equipment damaged or modified by
work in this contract
— —
a. Interior E-3 Match existing
b. Exterior U-1 Match existing

5. Electrical switchgear panels, unit substations,
motor control centers, power transformers,
distribution centers and relay panels; interior
and exterior
See Division
16 See Division
16 6. Instrumentation panels, graphic indicating
panels, indicating and transmitting field
panels, unless stainless steel; interior or
exterior
See Division
16 See Division
16 7. Existing electrical and instrumentation panels
not damaged by work in this contract
Uncoated —

8. Existing electrical and instrumentation panels
damaged by work in this contract
— —
a. Interior E-3 Match
Existing
b. Exterior U-1 Match
Existing
B. Process Piping

1. Submerged iron or steel piping, appurtenant
hangers and supports, including galvanized
(except stainless steel and non-ferrous)
E-2 Match
Existing

2. Ferrous, non-ferrous and galvanized piping,
appurtenant hangers and supports, nonimmersed, non-stainless steel — —
a. Interior E-3 See Note 1
b. Exterior U-1 See Note 1

3. Plastic PVC and CPVC Piping — —
a. Interior E-3 See Note 1
b. Exterior U-2 See Note 1

4. Flexible Tubing Uncoated —
C. Miscellaneous Electrical

1. Conduit, outlet and junction boxes, lighting
transformers, lighting communication and
small power panels, control stations,
appurtenant hangers, trays, clamps and
supports; interior and exterior
See Division
16 See Division
16

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SURFACE SYSTEM COLOR

2. Existing conduit, outlet and junction boxes,
lighting transformers, lighting, communication
and small power panels, control stations,
lagged ductwork, appurtenant hangers,
clamps and supports on uncoated surfaces,
unless otherwise specified
— —
a. Not damaged or modified by work in
this contract
Uncoated —
b. Damaged or modified by work in this
contract
— —
1) Interior E-3 See Note 1
2) Exterior U-2 See Note 1
D. Ductwork (Except as specified) Uncoated —
E. Concrete, Grout, Masonry, and Plaster

1. Structural concrete, exposed Uncoated —

2. Structural concrete, buried, immersed, noncorrosive environment, unless otherwise specified
Uncoated —

3. Concrete equipment pads E-6 See Note 1

4. Concrete Floors S-1 See Note 1
F. Existing Doors, Door Frames and Louvers damaged
by work in this contract; interior and exterior
U-2 See Note 1

1. FRP Uncoated —
G. Existing Handrails, Gratings, Floor Plates, Manhole Covers, and Hatches

1. Not damaged by work in this contract Uncoated —

2. Damaged by work in this contract — —
a. Interior E-3 See Note 1
b. Exterior (non-walking surfaces) U-2 See Note 1
H. Aluminum Flashing, Light Standards, and Supports;
interior and exterior
Uncoated —
I. Other

1. Equipment and appurtenances which are
made of fiberglass, plastic, rubber, including
flexible hose, conduit, and plastic coated
tubing, expect as specified
Uncoated —

2. Buried, sleeve-type couplings, flanged pipe,
couplings, valves, mechanical and electrical
penetrations not encased in concrete, except
as specified
M-1 See Note 1
J. Aluminum surfaces in contact with concrete. E-2 See Note 1 Notes:

1. Owner to select from manufacturer’s color charts

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3.11 LOCATION SPECIFIC FINISH SCHEDULE

SURFACE SYSTEM COLOR
A. New Dewatering and Thickening Mechanical Facility (See Drawing Series M000)

1. Concrete floor seal S-1 clear

2. Stainless steel items and exposed anodized
aluminum Uncoated —

3. Aluminum surfaces in direct contact with
concrete E-2 —

4. Structural steel columns, beams, and base
plates U-1 See Note 1

5. Metal roof panels, metal wall panels, roll-up
door FF See Notes 2

6. Screw press dewatering system items which
are not stainless steel (ferrous metal) U-2 —

7. Stainless steel conveyor Uncoated —

8. Polymer blending unit and air compressor FF —

9. Screw press and conveyor drive motors and
gear reducers U-2 See Note 1

10. Exposed piping, fittings, and valves U-1 See Note 1

11. Flocculation tank or chamber exposed
exterior surfaces which are not stainless steel
(ferrous metal)
U-1 See Note 1

12. Concrete floor and walls beneath trench drain
and polymer spill containment grating E-8 —

13. Emergency shower FF See Note 2

14. Metal doors and frames See Note 4 See Note1
B. Covered Equipment Storage (See Drawing Series S1300)

1. Concrete floor seal S-1 Clear

2. Structural steel columns, roof beams, purlins,
girts, etc U-1 See Note 1

3. Architectural trim See Note 4 See Note1

4. Building Roof Panels FF See Notes 1,
2 5. Preformed metal wall panels FF See Notes 1,
2 Notes:

1. Owner to select colors from manufacturer’s color charts

2. FF = Factory Finish.

3.12 EXCLUSIONS
A. Do not prepare or coat the following items or surfaces:

1. Mortar coated pipe and fittings

2. Sacrificial anodes and support wires

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3. Copper, brass

4. Name Plates

5. Fiberglass items

6. Piping insulation, insulation covers, or insulation jackets.

B. Where surfaces specified as "not to be coated" are damaged, coated or otherwise do not comply with these Specifications, clean, repair or otherwise restore such surfaces to the satisfaction of the Construction Manager, at no additional cost to the Owner.

3.13 VENTILATION
A. General Requirements

1. Use forced air ventilation at all times to effectively remove solvents for proper drying of coats on the interior containment structures.

2. Remove solvent vapors released during application and from the deposited film using explosion proof exhaust blowers, suction fans, or as an integral part of the dehumidification equipment.

3. Duct exhaust blowers or suction fans should be ducted to or from the bottom of the structure.

B. Requirements for Potable Water Structures (Not Used)

3.14 FINAL CURE (INTERIOR LININGS)
A. Follow manufacturer’s recommendations, as approved by the Construction Manager.

1. Minimum Cure Time: Seven (7) days (168 hours) at a temperature of 70 degrees F at a relative humidity of 50%.

2. Do not provide less than minimum cure time, unless recommended in writing by the manufacturer and approved by the Construction Manager.

B. After completion of curing cycle, test the applied coating via a “solvent” or “hardness test”.

1. Verify to the Construction Manager that adequate curing has been achieved.

2. Perform “solvent” tests or “hardness” tests, including the solvent and number of double-rubs, recommended by coating manufacturer.

C. Solvent Wipe Test

1. Verify completion of the final cure.

2. Use a rubbing a cloth saturated with solvent as recommended by manufacturer on the area to be tested.

3. If the area tested becomes tacky, the coating is not fully cured. a. Extend the curing period until the coating is fully cured to the satisfaction of the Construction Manager.
b. Test per ASTM D5402.

D. If final cure has not been attained, based on tests described above, extend the curing time until applied coating passes the “double rub solvent test” per manufacturer’s instructions.

3.15 INSPECTION AND TESTING
A. Perform inspection and testing as specified. Include additional inspection, sampling and testing work that the Construction Manager may require to verify compliance with these Specifications.

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B. Notify the Construction Manager three (3) working days in advance of any field operations involving abrasive blast cleaning or coating applications.

C. Assistance to Construction Manager

1. Coordinate work with the inspection, sampling and testing requirements of the Construction Manager

2. Assist the Construction Manager as required for the performance of duties.

3. Provide all lighting and scaffolding to enable the Construction Manager to perform inspection and testing.

4. Provide the level of illumination and scaffolding locations for inspection purposes as directed by the Construction Manager.

5. Furnish Construction Manager with safety equipment and devices during abrasive blast cleaning, coating and painting operations. Provide a helmet with continuous fresh air supply for observation during cleaning operations and coating application.

D. The Construction Manager will perform such tests as are required to help ensure compliance with all phases of the surface preparation, and application of the coating systems. Provide test equipment including, but not be limited to the following: SSPC surface preparation standards; surface profile test tape; micrometer; abrasive sieve test; ultraviolet lamp; sling psychrometer; mirror; certified thickness calibration plates; magnetic type dry film thickness gage; and a nondestructive holiday detector.

E. Inspection by the Construction Manager does not relieve the Contractor of the responsibility of compliance with all the requirements of these specifications.

1. In cases of dispute concerning surface profiles, film thickness, film continuity (holidays), etc., the Construction Manager’s measurements and tests shall be final.

Abide by the Construction Manager’s decisions and directives.

2. Correct deficiencies in the continuity of the coating, or painting film or in the dry film thickness by applying additional coats as required, at the sole expense of the Contractor.

F. The Construction Manager will determine the degree and surface profile of the field blast cleaned surface per test method NACE RP0287. Perform additional blast cleaning over areas not conforming to the specified degree of surface preparation and surface profile.

G. Perform tests on surfaces of abrasively blast-cleaned steel to detect oil and other contaminants which might be deposited on surfaces as a result of abrasive blasting operations. This may include chemical tests or ultraviolet (black light) tests, as required.

H. Perform all mixing, thinning, application and holiday detection of coatings in the presence of the Construction Manager.

I. The Construction Manager may completely inspect each application of coating to determine thickness and integrity.

1. Each coating application will be checked and deficiencies marked.

2. After observing specified recoat time apply additional coating materials over areas not having the specified minimum dry film thickness and areas having any holidays or pinholes.

3. After correction of deficiencies, the Construction Manager will re inspect those areas to determine the acceptability of the additional coating.

4. Each coating application must be one hundred (100) percent to the satisfaction of the Construction Manager prior to proceeding with successive coating applications.

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J. Dry Film Thickness Measurement

1. Use an approved magnetic type non-destructive dry film thickness gauge.

2. Determine that the specified dry film thickness has been obtained.

3. Measure specified dry film thickness' above the peaks of the surface profile.

4. Perform as many dry film thickness measurements, as described in SSPC – PA2, as required to verify compliance with this specification. Use a Type II Constant Pressure Probe Dry Film Thickness Gauge.

K. Furnish calibrated inspection devices in good working condition for detection of holidays and measurement of dry film thickness.

1. Calibrate and operated per manufacturer's instructions.

2. Furnish U.S. Department of Commerce; National Bureau of Standards certified thickness calibrated plates to test the accuracy of dry film thickness gauges and certified instrumentation to test the accuracy of holiday detectors.

3. Keep dry film thickness gauges and holiday detectors available onsite at all times until final acceptance of the application.

L. Construction Manager may elect to furnish inspection devices and render decisions based solely upon test results from these devices.

M. For coating film continuity detection tests on interior structure coated surfaces with 20 mils or less dry film thickness, use a non destructive holiday detector.

1. Provide personnel to operate coating film continuity detection devices under the direction of the Construction Manager.

2. Operate inspection devices per the manufacture’s recommendations in accordance with NACE RPO188.

N. Test the coating integrity of the interior surfaces below the overflow line.

1. Mark all pinholes and repair manufacturer's written recommendations, or as directed by the Construction Manager; and then retest.

2. Holidays or other irregularities are not permitted in the completed coating system.

3. During the testing, keep the detecting blade in continuous contact with the coated surface.

4. Do not proceed with holiday detection until the completed coating system has been cured per the manufacturer's recommendations.

O. Upon completion of the epoxy application to the interior structure surfaces, retest for holidays those areas of the lower shell which may have been subjected to abrasive blast rebound from the floor, repaired as noted herein. Repair areas as required and retest.

P. Dew Point

1. Measure using a sling psychrometer in conjunction with U.S. Department of Commerce Weather Bureau Psychrometric Tables, a digital sling psychrometer thermo hygrometer, or equivalent.

2. Comply with specified temperature and dew point for all surface preparation and coating operations.

Q. Measure anchor profile for prepared surfaces using a non-destructive instrument such as a Testex Press O Film System.

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R. The Construction Manager will verify completion of the final cure of the interior lining using a solvent wipe test.

1. Solvent wipe test: Consists of rubbing a solvent saturated rag on the area to be tested per ASTM D5402, using solvent recommended by manufacturer.

2. If any coating material is removed or the surface being tested becomes tacky, the coating is not fully cured. Extend curing time and if required continue dehumidification until the coating is fully cured.

S. The Construction Manager may suspend the work if the cleaning and coating operations of the Contractor are creating a localized condition detrimental to facility operation, personnel or adjacent property. In the event of an intermittent or emergency suspension of the work by the Construction Manager, correct deficiencies immediately.

T. Prepare, sign, and submit to the Construction Manager daily inspection reports.

U. Nonconformance Reports

1. When a nonconformance report is required, prepare, sign, and submit to the Construction Manager within one working day from the time that it is written.

2. After confirming that all non-conforming work has been corrected and/or the coating work is in compliance with this specification, prepare and submit a conformance verification report shall be completed for the specific item or area.

3. This report must be signed by the inspector.

3.16 FINAL CLEANUP
A. Leave all areas in a neat and presentable condition.

B. Remove rubbish, construction debris and waste, surplus construction materials, scaffolding, tools, equipment, and coating, and thinner containers, and excess coating, and thinners, and other objectionable materials.

C. Dispose of such materials away from the site of work and in conformance with all applicable codes, ordinances and regulations.

D. Remove coating spots upon adjacent surfaces.

E. Clean, repair or refinish all damage to surfaces resulting from the work.

3.17 WARRANTY INSPECTION
A. Warranty: See Paragraph 1.08.

B. Conduct a warranty inspection of all coating and painting work between the period of eleventh (11th) month through eighteenth (18th) month following final acceptance of the Contract work.

C. The Construction Manager will establish the date for the inspection and will notify the Contractor at least 30 days in advance. The Construction Manager may, by written notice to the Contractor, reschedule the warranty inspection to another date within the eleventh through eighteenth month inspection period, or may cancel the warranty period altogether.

D. Attendance

1. Attend the warranty inspection.

2. Notifying all directly involved parties of the date and time of the inspection.

3. The Construction Manager suggests all personnel present at the pre-construction conference be present at this inspection.

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E. Preparation

1. The Owner will completely drain each vessel and hose clean the interior sufficiently for inspection.

2. Provide (Contractor) suitable lighting, ventilation and scaffolding for the structure inspection.

3. Use SSPC – Guide 12 for Illumination, and provide a minimum of 200 candle foot illumination for inspection.

F. Inspect visually the entire interior and exterior coating systems to determine whether any repair work is necessary or if a more detailed inspection will be needed.

G. The Construction Manager will prepare and deliver to the Contractor an Inspection Report:

1. The report will cover the warranty inspection, setting forth the number and types of failures observed, the percentage of the surface area where failure has occurred, and the names of the persons making the inspections.

2. Color photographs illustrating each type of failure will be included in the report.

3. A coating system failure is defined as any location where coatings have peeled off, bubbled, or cracked, and any location where rusting is evident.

4. Upon completion of inspection and receipt of Inspection Report, the Construction Manager will establish a date for the Contractor to proceed with remedial work.

H. Commence repairs on the date established by the Construction Manager and completed within one month (thirty days).

1. Repair all coating system failures.
a. Remove the deteriorated coating, clean the surface and recoat with the same coating system in strict accordance with the specification and manufacturer's recommendations, to the satisfaction of the Construction Manager.
b. If the area of failure exceeds twenty five (25) percent of the area of a portion of the structures surface, then remove the entire coating system and recoat that surface
I. All costs for warranty inspection are the responsibility of the Contractor, exclusive of the costs of the coatings inspection firm retained by the Owner for the warranty inspection. All costs for repair of defective work discovered during the warranty inspection, and the additional cost for re-inspection of repaired work by the coatings inspection firm, are the responsibility of the Contractor. .

J. If the contractor fails to complete the remedial work to the satisfaction of the Construction Manager, the Owner may elect to perform the remedial work. The Contractor is liable for actual cost of all such remedial work, plus 20% for Owner’s administrative cost.

K. Perform final cleanup in accordance with this Section.

END OF SECTION

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West Yost – March 2023 09970 - 1 City of Ukiah
592-50-22-14 Mechanical Zinc Coating Thickening and Dewatering Improvements
SECTION 09970

MECHANICAL ZINC COATING
PART 1 - GENERAL

1.01 DESCRIPTION
A. Mechanically applied zinc coating for steel fasteners including bolts, screws, nuts and washers. Electroplated corrosion protection is not an acceptable substitute for mechanical zinc coating.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittal Procedures

2. Section 09972 – Hot-Dip Zinc Coating

1.03 SUBMITTALS
A. Submit product data that describes materials and method of coating used in accordance with Section 01330.

1.04 REFERENCES
Reference Title
ASTM A153 Zinc Coating (Hot-Dip) on Iron and Steel Hardware ASTM B695 Coatings of Zinc Mechanically Deposited on Iron and Steel PART 2 - PRODUCTS

2.01 MATERIALS
A. Zinc coating material: As specified in ASTM A153.

B. Zinc coating thickness: Class 50 as specified in ASTM B695.

PART 3 - EXECUTION

3.01 FIELD REPAIR
A. Repair damaged surfaces of zinc-coated metals as specified in Section 09972.

END OF SECTION

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West Yost – March 2023 09972 - 1 City of Ukiah
592-50-22-14 Hot-Dip Zinc Coating Thickening and Dewatering Improvements
SECTION 09972

HOT-DIP ZINC COATING
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Application of zinc coating to steel using the hot-dip method.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittals

2. Section 09970 – Mechanical Zinc Coating

1.03 SUBMITTALS
A. Comply with Section 01330.

B. Manufacturer's product data showing conformance to the specified product.

C. Narrative description of method for application of zinc coating.

D. Coating applicator's Certificate of Compliance that the hot-dip galvanized coating meets or exceeds the specified requirements of ASTM A123 or A153, as applicable.

E. Source quality control procedures.

PART 2 - PRODUCTS

2.01 MATERIALS
A. Zinc Coating Material: In accordance with ASTM A153.

B. Zinc Dust-Zinc Oxide Coating: Conform to MILSPEC DOD-P-21035. Manufactured by Z.R.C. Chemical Products Co., Galvicon Co., or equal.

2.02 FABRICATION REQUIREMENTS
A. Fabrication practices for products to be galvanized: In accordance with applicable portions of ASTM A143, A384 and A385.

PART 3 - EXECUTION

3.01 APPLICATION
A. Galvanize steel members, fabrications and assemblies after fabrication and in accordance with ASTM A123.

B. Unless otherwise specified, steel items weighing 100 pounds or less shall be hot-dip zinc coated.

C. Galvanized Bolts and Nuts:

1. Bolts and nuts 5/8-inch in diameter and larger: hot-dip zinc coated in accordance with ASTM A153.

2. Bolts and nuts smaller than 5/8-inch and all other bolts, screws, nuts, washers and other minor steel fasteners: Mechanically zinc coated as specified in Section 09970.

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3.02 COATING REQUIREMENTS
A. Coating Thickness: Coating Grade 35 in accordance with ASTM A123, Table 2.

3.03 REPAIR OF DEFECTIVE GALVANIZED COATING
A. Damaged Zinc Coating:

1. Clean substrate surface, then repaired with zinc dust-zinc oxide coating in accordance with ASTM A780. Apply in accordance with instructions published by the manufacturer of the zinc dust-zinc oxide coating.

2. Coating Thickness: Apply multiple coats to achieve a dry film thickness of 8 mils.

B. Items not physically damaged, but which have insufficient or deteriorating zinc coatings, and items damaged in shipment or prior to installation, shall be removed from the project site for repair by the hot-dip zinc coating method.

END OF SECTION

West Yost – March 2023 10020 - 1 City of Ukiah
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SECTION 10020

WARNING SIGNS
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Informational and accident prevention signs.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittals

2. Section 11000 – General Requirements for Equipment

1.03 DESIGN REQUIREMENTS
A. Regulatory Compliance

1. Accident Prevention Signs: Conform to design required by OSHA Section 1910.145 of Subpart J, Part 1910, Chapter XVII, Title 29 of the Code of Federal Regulations.

2. Exit Signs: Conform with Section 1910.37(g) of the OSHA Safety and Health Standard for General Industry, Article 10, Section 10.113 of the Uniform Fire Code, and where applicable with local fire regulations.

B. Size Requirements

1. Sign sizes shall be as follows:
a. Size A: 14” x 20”
b. Size B: 10” x 14”
c. Size C: 7” x 10”
d. Size D: 24” x 24”
C. Color Requirements

1. Danger Signs:
a. Background: White.
b. Heading: White lettering in a red oval with a white border around the oval.

Position oval in a black rectangular field in the upper portion of the sign. c. Message: Black lettering.

2. Caution Signs:
a. Background: Yellow.
b. Heading: Yellow lettering in a black rectangle. Position black rectangle in the upper portion of the sign.
c. Message: Black lettering on the yellow background.

3. Safety Signs:
a. Background: White.
b. Heading: White lettering in a green rectangle. Position green rectangle in the upper portion of the sign.
c. Message: Black lettering on the white background.

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4. Warning Signs:
a. Background: Orange.
b. Heading: Black lettering in an orange diamond with black border forming the diamond. Position orange diamond in the upper portion of the sign. c. Message: Black lettering.

1.04 SIGN TYPES
A. Sign Types and Messages
Type Message

DANGER SIGNS
I DANGER—HIGH VOLTAGE
II DANGER—480 VOLTS
III DANGER—CONFINED SPACE ENTRY
IV DANGER—CONFINED SPACE—HAZARDOUS ATMOSPHERE

CAUTION SIGNS
V NON-POTABLE WATER—DO NOT DRINK
VI CAUTION—CORROSIVE CHEMICALS
VII CAUTION—HIGH TEMPERATURE

SAFETY SIGNS

VIII EAR PROTECTION REQUIRED BEYOND THIS POINT

IX EMERGENCY EYEWASH AND SAFETY SHOWER

X EMERGENCY EYE WASH

XI NOT AN EXIT

WARNING SIGNS
XII WARNING—AUTOMATIC EQUIPMENT MAY START AT ANY TIME
XIII WARNING—FOREIGN VOLTAGE
XIV (NFPA hazardous material sign with appropriate chemical ratings)

1.05 SUBMITTALS
A. Comply with Section 01330.

B. Samples: Submit 2 sets, typical of sign type. One set of samples will be retained by the CM, other returned to Contractor.

C. Color samples of each color, 150 mm x 150 mm (6”x 6”). Show anticipated range of color and texture.

D. Sample of typeface, arrow, and symbols in a typical full size layout.

E. Manufacturer’s Literature: Manufacturer’s printed specifications, anchorage details, installation and maintenance instructions.

PART 2 - PRODUCTS

2.01 GENERAL
A. Sign Lettering: Single stroke and contrasting in color with the background.

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B. Use standard and commonly accepted international symbols on signs with messages that include such symbols.

C. Chain Mounted Signs: Provide signs with lettering on both sides.

2.02 MATERIALS
A. Signs shall be 0.100” thick fiberglass with embedded fade-proof legends.

2.03 SIGN SCHEDULE
A. Provide signs in accordance with the following schedule:

Location Size Type Mount
Hose Bibs B V 48” above floor
Automatic Equipment B XI See also Section 11000
Electrical Equipment B II 48” above floor
PART 3 - EXECUTION

3.01 INSTALLATION
A. Mount signs using round head stainless steel bolts or screws.

B. Securely mount signs level, plumb and true to plane positions.

END OF SECTION

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West Yost – March 2023 10520 - 1 City of Ukiah
592-50-22-14 Fire Extinguishers and Cabinets Thickening and Dewatering Improvements
SECTION 10520

FIRE EXTINGUISHERS AND CABINETS
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Multi-purpose dry chemical fire extinguishers.

B. Fire extinguisher cabinets.

C. Mounting brackets.

D. Equipment List
Structures Location Mount Quantity UL Rating
Capacity,
pounds
Dewatering Building Owner Chosen Wall One B 10
DAFT Building Owner Chosen Wall One B 10

1.02 REFERENCED SECTIONS
A. The following Section is referenced in this Section

1. Section 01330 – Submittals

2. Section 01999 – Reference Forms

1.03 DESIGN CRITERIA
A. Comply with applicable standards:

1. National Fire Protection Association (NFPA) 10

2. Underwriters Laboratories (UL) 299
B. Comply with applicable code:

1. California Code of Regulations Title 8, Section 6151 C. Meet the requirements of the City of Galt Fire Marshal.

1.04 SUBMITTALS
A. Comply with section 01330.

B. Manufacturer’s catalog information (“cut sheets”) for extinguishers, mounting brackets and cabinets. Demonstrate compliance with specified UL rating and NFPA standard.

C. Material Safety Data Sheets for chemical supplied.

D. Provide written instructions describing operation, charging, and maintenance of fire extinguishers furnished.

1.05 QUALITY ASSURANCE
A. Extinguishers shall:

1. Be listed in the current edition of the U.L. Fire Protection Equipment Directory

2. Be supplied by a single manufacturer.

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592-50-22-14 Fire Extinguishers and Cabinets Thickening and Dewatering Improvements

3. Bear Factory Mutual Certification and Underwriters Laboratories Certification, and be listed by the state fire marshal.

1.06 WARRANTY
A. All fire extinguishers shall be warranted against defects in materials and workmanship for 6 years from date of final project acceptance.

B. Complete the Extended Warranty Form in Section 01999.

PART 2 - PRODUCTS

2.01 MANUFACTURERS
A. Larsen Manufacturing MP-10
B. Amerex
C. Approved equivalent

2.02 EXTINGUISHERS
A. Type: Multipurpose dry chemical (Class A, B, C)
B. Tamper seals: Breakable metal type.

C. Pressure gauges: Dial type.

D. Mounting brackets:

1. As furnished by the manufacturer, for the equipment specified.

2. Quick-release design, not subject to release by bumping.

E. Bracket anchors: Furnished with each bracket, suitable for specified mounting surface.

2.03 FIRE EXTINGUISHER CABINETS
A. Larsen Architectural Series, or equal.

1. Doors and frames: 0.062-inch extruded aluminum, etched to a satin finish and anodized to prevent corrosion.

2. Doors:
a. Tubular construction with an aluminum continuous hinge and a positive cam catch.
b. Door lite: Full wire glass
B. Provide where indicated:

1. Recessed.

2. Semi-Recessed.

3. Surface mounted.

C. Fire Rated Cabinets: Provide for rated walls.

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592-50-22-14 Fire Extinguishers and Cabinets Thickening and Dewatering Improvements
PART 3 - EXECUTION

3.01 INSTALLATION
A. Codes:

1. Conform to NFPA 10.

2. Conform to CCR Title 8, Section 6151

3. Conform to ADA requirements for mounting height
B. Place the indicated number and type of fire extinguishers, freshly charged, in cabinets or on mounting brackets as specified, just prior to completion of the project.

C. Prepare recesses in walls for cabinets as required by type and size of cabinet and style of trim, and in compliance with manufacturer's instructions.

D. Bracket mounts:

1. Location: As shown on drawings. Where location of bracket-mounted units is not specified, locate as directed by Architect or Engineer.

2. Mount wall hanger brackets securely to studs or blocking using two (2) No. 10 screws with 1 ½-inch penetration into studs or blocking.

3. Mount in clean dry area, accessible to possible fire hazards and near exit.

4. Withstand a vertical force of five (5) times the weight of the charged extinguisher but not less than 100 pounds.

E. Place top of extinguisher 42 inches above floor unless otherwise noted.

F. Installation of specified fire extinguishers does not relieve Contractor of the responsibility to provide adequate fire protection in the course of his or her work.

END OF SECTION

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West Yost – March 2023 11000 - 1 City of Ukiah
592-50-22-14 General Requirements for Equipment Thickening and Dewatering Improvements
SECTION 11000

GENERAL REQUIREMENTS FOR EQUIPMENT
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. General requirements applicable to mechanical equipment and systems.

B. Ensure mechanical equipment meets the requirements of this Section in addition to the specific requirements of the individual equipment specification Sections.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittals

2. Section 01782 – Operation and Maintenance Information

3. Section 01825 – Equipment and System Testing

4. Section 01999 – Reference Forms

5. Section 05500 – Miscellaneous Metals

6. Section 09960 – High Performance Coatings

7. Section 10020 – Warning Signs

1.03 GENERAL REQUIREMENTS
A. Equipment shall be of new construction and comply with the following requirements:

1. Designed for stresses that may occur during fabrication, transportation, erection, and during continuous or intermittent operations.

2. Anchored, leveled, aligned, and ready for operation without binding or overloading of critical components or motors.

3. Installed with necessary appurtenances required for proper operation and installation in a neat and workmanlike manner.

4. Tested by factory trained service mechanics or engineers.

1.04 UNIT RESPONSIBILITY
A. Equipment systems shall be assembled as a unit by a single manufacturer responsible for the entire unit.

1. Responsibility extends to selecting components of the system to assure compatibility, proper operation, and compliance with specified performance requirements.

2. Unit responsibility does not relieve Contractor of responsibility to Owner for performance of the Work.

1.05 QUALITY ASSURANCE
A. Arrangement

1. The arrangement of equipment shown on the Drawings is based upon information available at the time of design and is not intended to show exact dimensions peculiar to a specific manufacturer.

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2. Some features of the illustrated equipment installation may require revision to meet actual equipment installation requirements.

3. Structural supports, foundations, connected piping, and valves shown may have to be altered to accommodate the equipment provided. Additional payment will not be made for such revisions and alterations.

B. Balance: Fully assemble rotating elements in motors, pumps, blowers and centrifugal compressors before performing static and dynamic balance. Where specified, submit balancing reports, demonstrating compliance with this requirement.

1.06 SUBMITTALS
A. Comply with Section 01330.

B. General: Provide separate submittals for each equipment item or group of related equipment items.

C. Equipment Anchorage: Submit anchor bolt sizing calculations.

D. Bearing Life Calculations: Submit bearing L-10 life calculations in accordance with ABMA requirements.

1.07 OPERATION AND MAINTENANCE MANUALS
A. Furnish operation and maintenance manuals for each equipment system in accordance with the Section 01782 requirements.

1.08 PROTECTION DURING SHIPMENT
A. Shipping: Ship equipment in sealed, weather-tight, enclosed conveyances, and protected against damaging stresses during transport and handling.

B. Bearing Housings: Wrap or otherwise seal to prevent contamination by grit and dirt, and tape closed ventilation and other types of openings.

C. Repair any damaged materials to conform to the requirements of the Contract before the assembly is incorporated into the Work. The Contractor shall bear the costs arising out of dismantling, inspection, repair, and reassembly.

PART 2 - PRODUCTS

2.01 PIPING CONNECTIONS ON EQUIPMENT
A. Flanges on Equipment: Conform to dimensions and drilling specified in ANSI B16.1, Class 125 unless otherwise required by Division 15 pipe specifications or the Drawings.

B. Pipe Flanges: Conform to dimensions and drilling specified in AWWA C207, Class D, 125 lb flanges provided on connection pipe.

C. Threaded Flanges: Flat faced with standard taper pipe thread conforming to ANSI B1.20.1.

D. Pipe Threads: Conform in dimension and limits of size to ANSI B1.1, coarse thread series, Class 2 fit.

E. Flange Assembly Bolts and Nuts

1. Heavy pattern, hexagonal head, carbon steel machine bolts with heavy pattern, hot pressed, hexagonal nuts conforming to ANSI B18.2.1 and B18.2.2.

2. Threads: Unified Screw Threads, Standard Coarse Thread Series, Class 2A and 2B, ANSI B1.1.

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592-50-22-14 General Requirements for Equipment Thickening and Dewatering Improvements

2.02 BEARINGS
A. Service: Unless otherwise specified, equipment bearings shall be oil or grease lubricated, ball or roller type, designed to withstand the stresses of the service specified.

B. Rating

1. L-10 Rating Life: Minimum 50,000 hours unless otherwise specified. Determine rating life using the maximum equipment operating speed.

2. Determine rating in accordance with the latest revisions of AFBMA Methods of Evaluating Load Ratings of Ball and Roller Bearings.

3. Where individual equipment Sections specify higher bearing life ratings, those requirements supersede the minimum bearing life specified above.

C. Grease Lubricated Bearings

1. Fit with easily accessible grease supply, flush, drain and relief fittings, except those bearings specified to be factory sealed and lubricated.

2. Extend non-accessible grease fittings to an easily accessible location using 1/4- inch diameter stainless steel tubing as an extension tube.

3. Grease supply fittings: Standard hydraulic Alemite or Zerk type.

D. Oil Lubricated Bearings

1. Equip with either a pressure lubricating system or a separate oil reservoir type system.

2. Size oil lubrication systems to safely absorb the heat energy normally generated in the bearing under a maximum ambient temperature of 60°C.

3. Equip with a filler pipe and an external level indicator gage.

E. Incorporate bearing housings with sufficient cooling to maintain surface temperature at 65 degrees C or less for continuous operation at bearing rated load and a 50 degrees C ambient temperature, or install appropriate shielding on bearings that are accessible to touch.

F. Bearing Isolators

1. Provide for bearing where the shaft exits the bearing housing.

2. Motor Bearings: Provide Inpro/Seal style VBX vapor blocking isolators.

3. Gears: Provide Inpro/Seal “Double Runner” bearing isolator for shafts exiting the gear casing.

4. Pumps, Blowers and Compressors: Provide Inpro/Seal style VBX blocking bearing isolators where shafts exit casings/housings.

5. Pillow Block Bearings: Provide Inpro/Seal “Pop-In” style bearing isolators.

2.03 DRIVE COMPONENTS
A. V-Belt Drives

1. Design with sliding base or other suitable tension adjustment.

2. Design with service factor of at least 1.6 at maximum speed.

3. Statically balance sheaves. In addition, dynamically balance sheaves that will operate at peripheral speed of more than 5,500 feet per minute.

4. Belts: Provide anti-static belts when explosion-proof equipment or environment is specified.

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B. Gear Reducers

1. Provide drives with nominal input horsepower rating equal to or greater than the nameplate horsepower of the drive motor.

2. Provide gear drives manufactured in accordance with AGMA Class II service requirements.

2.04 SHAFT COUPLINGS
A. Type and Rating: Non-lubricated, designed for a minimum of 50,000 hours operating life.

B. Equipment with a driver greater than 1/2 horsepower, and where the input shaft of a driven unit is directly connected to the output shaft of the driver, shall have its two shafts connected by a flexible coupling which can accommodate angular misalignment, parallel misalignment and end float, and which cushions shock loads and dampens torsional vibrations.

C. Provide couplings recommended by the coupling manufacturer for the specific application, considering horsepower, speed of rotation, and type of service.

D. Install couplings in conformance to the manufacturer's instructions.

2.05 GUARDS AND CAUTION SIGNS
A. Guards

1. Enclose exposed moving parts with guards that meet the requirements of federal and state OSHA requirements.

2. Enclose drive shafts to at least 7 feet above floors or operating platforms.

B. Materials

1. Fabricate guards of 14 gauge steel and expanded metal screen to provide visual inspection of moving parts without removal of the guard.

2. Galvanize after fabrication and paint with the equipment.

3. Fasteners: Type 304 stainless steel.

C. Warning Sign

1. Provide warning signs near equipment with moving parts that operate automatically or by remote control.

2. Provide warning signs with wording, size and colors specified in Section 10020.

2.06 PRESSURE TAPS AND GAUGES
A. Pressure Taps and Gauges: Unless otherwise indicated, provide on the discharge and suction sides of pumps, blowers and compressors.

B. Pressure Gauges: 4-1/2-inch size, range as specified, stainless steel case, liquid filled, safety glass, weather proof, bronze tube and brass socket, industrial grade stainless steel movement with brass hairspring, 1.5% accuracy, and 1/2-inch NPT lower connection.

Supply with 1/2-inch brass gauge cock.

2.07 NAMEPLATES AND LIFTING EYES
A. Nameplates

1. Provide on each item of equipment with the specified equipment name or abbreviation and equipment number.

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2. Engrave or stamp (not painted) on stainless steel and fastened to the equipment in an accessible location with stainless steel screws or drive pins.

B. Lifting Eyes

1. Provide on equipment weighing over 80 lbs.

2.08 SPARE PARTS AND LUBRICANTS
A. Spare Parts: Provide for each item of mechanical, electrical, and instrumentation equipment a supply of spare parts and special tools required for the starting, testing, adjustments, and initial operation. Pack spare parts required by individual equipment specifications:

1. Pack spare parts with individual weights less than 50 pounds in a heavily constructed painted wood box with hinged cover and a locking clasp.

2. Provide a typed inventory of spare parts stapled to the underside of the cover.

3. Tag and wrap each part in a waterproof container. Spare bearings shall be encapsulated in an airtight plastic film.

B. Lubricants: Provide for each item of mechanical equipment of the type recommended by the equipment manufacturer a supply of the lubricant for startup, testing, and initial operation.

1. Provide a list showing the required lubricants for each item of mechanical equipment. List estimated quantity of lubricant needed for a full year's operation, assuming the equipment will operate continuously.

2. Lubricants shall be products of the Owner's current lubricant supplier.

3. Limit the various types of lubricants by consolidating them, with the equipment manufacturer's approval, into the least number of different types.

2.09 ANCHOR BOLTS
A. Size anchor bolts and concrete anchors for equipment in accordance with Section 05500.

2.10 FACTORY APPLIED COATINGS
A. Ship each item of equipment to the site of the work with a shop applied prime coating prepared in accordance with the requirements of Section 09960 and compatible with the finish coatings.

B. Finish Painting of Motors: Factory-apply finish coats using manufacturer's standard coating, unless otherwise specified in Section 09960.

2.11 SPECIAL TOOLS AND ACCESSORIES
A. Furnish with each piece of equipment all tools, instruments, or accessories of a special nature that are required to assemble, disassemble, maintain, or repair any item of equipment.

1. Tag and mark each piece indicating their service and the piece of equipment for which their use is intended.

2. Include a list and description or pictorial representation of all special tools required for a given piece of equipment for insertion into the equipment operation and maintenance manual.

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2.12 FASTENERS AND DIELECTRIC ISOLATION
A. Fasteners for Aluminum: Stainless steel.

B. Isolate steel surfaces, other than stainless steel, from aluminum with stainless steel, neoprene, non-metallic washers or other acceptable material.

C. Dissimilar Metals: Protect from galvanic corrosion by means of pressure tapes, coatings, or isolators.

PART 3 - EXECUTION

3.01 INSTALLATION
A. Install, align and test each item of equipment within the tolerances recommended by the equipment manufacturer.

B. When specified in individual Sections, install and test equipment under the direction of installation engineers who have been factory trained by the equipment manufacturer.

C. Perform all work in accordance with manufacturer's recommendations.

3.02 QUALITY CONTROL
A. Test equipment in accordance with Section 01825 and the individual equipment Section.

B. Furnish written certification from the equipment manufacturers that each item has been installed, aligned, and tested correctly and that the installation meets the manufacturer's requirements for efficient, trouble-free operation. Utilize Manufacturer’s Installation Certification Form provided in Section 01999.

C. Equipment manufacturer’s certification shall not be construed as relieving the Contractor of his overall responsibility for this portion of the work.

END OF SECTION

West Yost – March 2023 11002 - 1 City of Ukiah
592-50-22-14 Equipment Mounting Thickening and Dewatering Improvements
SECTION 11002

EQUIPMENT MOUNTING
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Equipment mounting requirements, including fabricated steel equipment bases, concrete equipment pads, supports, anchorage, and accessories.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittals

2. Section 05500 – Miscellaneous Metals

3. Section 09960 – High Performance Coatings

1.03 QUALITY ASSURANCE
A. Provide supports, anchorage, and equipment mounts that are sized and designed to resist the calculated forces and that are in accordance with the manufacturer’s recommendations, the current International Building Code (IBC), and industry standards requirements.

1.04 DESIGN REQUIREMENTS
A. Design equipment mounts and anchorages to resist the minimum lateral force required by the latest edition of the IBC, the manufacturer of the equipment, or a lateral seismic force of 60% of the operating weight of the equipment, whichever is greater.

B. Equipment anchor bolt sizes shown on the Drawings are the minimum required size.

C. Equipment anchorage design and calculations shall be prepared and signed by a civil or structural engineer currently registered in the state where equipment is installed.

1.05 MOUNTING REQUIREMENTS
A. Mount equipment and driver on a common fabricated steel baseplate with ample rigidity to support equipment and maintain shaft alignment without excessive deflection.

B. Mount equipment baseplates on concrete equipment pads.

1.06 SUBMITTALS
A. Comply with Section 01330.

B. Shop Drawings: Provide drawings of equipment bases and anchorage details.

C. Anchorage Calculations: Submit stamped and signed anchor bolt sizing calculations.

PART 2 - PRODUCTS

2.01 ANCHOR BOLTS AND CONCRETE ANCHORS
A. Provide anchor bolts and concrete anchors in accordance with Section 05500.

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2.02 CONCRETE EQUIPMENT PADS
A. Construct concrete pedestals at least 6 inches wider and longer than the steel or cast base so that the distance between the anchor bolts and the edge of concrete is at least 3 inches.

B. Unless otherwise shown or specified, all conduits, piping connections, drains, etc. shall be enclosed by the concrete base.

C. Shape concrete pedestals to drain away from the base.

D. Allow concrete to cure 14 days or until the concrete has cured to 75 percent of its specified compressive strength before placing equipment on the concrete pedestal.

E. Do not start equipment placed on the concrete pedestal until the concrete has cured for 28 days or to 100 percent of its specified compressive strength.

2.03 STRUCTURAL STEEL EQUIPMENT BASES
A. Provide structural steel bases with thickened steel pads for doweling.

1. Fabricate equipment base using continuous welds to seal seams and contact edges between steel members.

2. Grind welds smooth.

B. Design equipment bases with perimeter steel beams, intermediate stiffeners and baseplate.

1. Provide perimeter steel beams with minimum depth equal to 1/10th of the longest dimension of the base.

2. Beam depth need not exceed 14 inches provided that the baseplate deflection is kept within acceptable limits to minimize misalignment, as determined by the manufacturer.

C. Provide grout holes for the bases of equipment where vibration isolation is not specified.

D. Provide minimum 1-inch thick steel mounting baseplate for equipment with drivers 20 horsepower and larger.

E. Shop-apply prime coat prepared in accordance with the requirements of Section 09960 and compatible with the finish coatings
PART 3 - EXECUTION

3.01 GENERAL
A. Connect piping to equipment with flexible connections and/or expansion joints such that the intended use of these joints is maintained in the piping system.

B. Coordinate the location of electrical conduit and piping penetrations within the concrete pad and equipment base.

1. Stub-up penetrations on the same side of the equipment as required for connection to the equipment.

2. Locate equipment drains for proper drainage away from equipment.

3.02 EQUIPMENT MOUNTING
A. Mount equipment on equipment baseplates using stainless steel shims so that equipment and driver are level in both directions and mounted within machined areas on baseplate.

Do not use wedges to obtain level and alignment.

B. Utilize templates for placement of anchor bolts prior to placing concrete for equipment pad.

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C. Apply a non-seize or non-galling compound on the threads of anchor bolts and concrete anchors.

3.03 SHAFT ALIGNMENT
A. After the complete unit has been installed on the equipment pad and leveled, check the factory shaft alignment by disassembling coupling and measuring angular and parallel orientations.

B. Use reverse-indicator dial or laser type alignment equipment to align shafts to within the manufacturer’s required tolerance. Allow for thermal expansion, spacer coupling length and other factors that affect proper shaft alignment.

3.04 GROUTING EQUIPMENT BASED
A. After alignment has been completed, tighten anchor bolts and grout between equipment base and equipment pad. Use non-shrink and non-ferrous grout no less than 7/8 inch and no more than 1-5/8-inches thick.

B. Allow 48 hours for grout to harden and then remove jacking screws. Re-check torque on anchor bolts and re-check shaft alignment, making corrections as necessary.

END OF SECTION

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West Yost – March 2023 11241 - 1 City of Ukiah
592-50-22-14 Emulsion Polymer Feed System Thickening and Dewatering Improvements
SECTION 11241

EMULSION POLYMER FEED SYSTEM
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Skid-mounted polymer system with interconnecting piping and wiring complete within skid limits.

B. Equipment included with the polymer system includes:

1. Motor-driven mixing chamber

2. Primary and post-dilution water controls

3. Neat polymer pump

4. System Controls

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section:

1. Section 01330 – Submittals

2. Section 01600 – Materials and Equipment

3. Section 01612 – Seismic Design Criteria

4. Section 01999 – Reference Forms

5. Section 11000 – General Requirements for Equipment

6. Section 11002 – Equipment Mounting

1.03 QUALITY ASSURANCE
A. References:

1. This section contains references to the following documents. They are a part of this section as specified and modified. Where a referenced document contains references to other standards, those documents are included as references under this section as if referenced directly. In the event of conflict between the requirements of this section and those of the listed documents, the requirements of this section shall prevail.

2. Unless otherwise specified, references to documents shall mean the documents in effect at the time of Advertisement for Bids or Invitation to Bid (or on the effective date of the Agreement if there were no Bids). If referenced documents have been discontinued by the issuing organization, references to those documents shall mean the replacement documents issued or otherwise identified by that organization or, if there are no replacement documents, the last version of the document before it was discontinued. Where document dates are given in the following listing, references to those documents shall mean the specific document version associated with that date, regardless of whether the document has been superseded by a version with a later date, discontinued or replaced.

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Reference Title
ASTM A276 Stainless Steel Bars and Shapes
ASTM A320/A320M Alloy/Steel Bolting Materials for Low-Temperature Service NEMA 250 Enclosures for Electrical Equipment (1,000 Volts Maximum) NFPA 70 National Electrical Code (NEC)
B. Unit Responsibility:

1. Assign unit responsibility, as specified in Section 11000 1.04 Unit Responsibility, to the manufacturer of the Polymer Feed System provided under this section.

Provide a completed, signed, and notarized Certificate of Unit Responsibility (Section 01999) shall be provided.

C. Factory Tests:

1. The specified equipment with all mechanical and electrical components shall be completely assembled as a skid at the manufacturer’s facility. Pump casings shall be hydrostatically tested to twice the discharge head. The skid shall be nonwitnessed tested for desired functionality and operation at the manufacturer’s facility prior to the shipment.

D. Shipment, Protection, and Storage:

1. Equipment shipment, protection, and storage shall conform to the requirements specified in Section 01600.

E. Manufacturer’s Experience:

1. Equipment furnished under this section shall be of a design and manufacture that has been successfully used in similar applications. The manufacturer shall have furnished equipment for a minimum of five similar applications that have been in successful operation for at least five years. A list of these installations complete with installation description, contact names, addresses, and telephone numbers shall be provided.

F. Warranty And Performance Affidavit:

1. The packaged aqueous polymer blending unit shall be warranted against defects in materials and workmanship of a period of five years.

1.04 SUBMITTALS
A. The following submittals shall be provided in accordance with Section 01330:

1. A copy of this specification section, with addendum updates included, and all referenced and applicable sections, with addendum updates included, with each paragraph check-marked to indicate specification compliance or marked to indicate requested deviations from specification requirements. A check mark () shall denote full compliance with a paragraph as a whole. If deviations from the specifications are indicated, and therefore requested by the Contractor, each deviation shall be underlined and denoted by a number in the margin to the right of the identified paragraph, referenced to a detailed written explanation of the reasons for requesting the deviation. The City shall be the final authority for determining acceptability of requested deviations. The remaining portions of the paragraph not underlined will signify compliance on the part of the Contractor with the specifications. Failure to include a copy of the marked-up specification sections, along with justification(s) for any requested deviations to the specification requirements, with the submittal shall be sufficient cause for rejection of the entire submittal with no further consideration.

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2. A copy of the contract document control diagrams and process and instrumentation diagrams relating to the submitted equipment, with addendum updates that apply to the equipment in this section, marked to show specific changes necessary for the equipment proposed in the submittal. If no changes are required, the drawing or drawings shall be marked "no changes required". Failure to include copies of the relevant drawings with the submittal shall be cause for rejection of the entire submittal with no further review.

3. Completed Certificate of Unit Responsibility attesting that the Contractor has assigned, and that the manufacturer accepts, unit responsibility in accordance with the requirements of this Section and Section 11000 1.04 Unit Responsibility. No other submittal material will be reviewed until the certificate has been received and found to be in conformance with these requirements.

4. Motor Data Sheets.

5. Manufacturer’s specifications verifying the equipment performance. Motor data sheet.

6. Dimensional drawings, showing required access and clearances, including any layout requirements of the equipment.

7. Equipment mounting information as specified in Section 11002.

8. Manufacturer's catalog data and shop drawings confirming dimensions, weight, construction, materials, and installation details.

9. Descriptive control sequences of the Polymer Feed System manual and automatic operation.

10. Equipment control panels:
a. Schematic diagrams, including connections to remote equipment. b. Drawings showing scaled front and interior views.
c. Bill of materials of components.
d. Marked product literature for all components.

11. Marked product literature for all instruments and controls.

12. Installation reference list including contact information as specified in this section.

13. Manufacturer’s written certification that the polymer blending unit is suitable for the required polymer. The certification shall state that no additional equipment, such as aging tanks, is necessary.

14. Predicted performance curves developed for the specific application. Performance curves shall plot speed, capacity, head, horsepower, efficiency, and NPSH required for the specified operating range for the pumps provided on the skid.

15. Shop drawings including location of all piping, electrical, instrumentation, and structural connections.

16. Descriptive control sequences of the polymer blending unit’s manual and automatic operation.

17. PLC program listing printout and Input/Output List

18. HMI screen printouts.

19. Bracing and anchoring design calculations per the requirements of Section 01612.

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1.05 ANCHORING AND BRACING
A. Mechanical, instrumentation and control, electrical, nonstructural systems, components, and elements permanently attached to the structure shall be anchored and braced to resist seismic forces. Contractor shall design the structural components, seismic attachment, braces, and anchors to the structure for all parts or elements of the mechanical and electrical systems in accordance with Section 01612.

PART 2 - PRODUCTS

2.01 SYSTEM DESCRIPTION
A. Multi-Zone Mixing Chamber

1. Polymer and water shall be mixed in a chamber designed to create sufficient mixing energy.
a. High shear zone of the mixing chamber shall have a mechanical mixing impeller for successful initial activation and the low shear zone shall not have a mixing impeller to avoid damaging polymer molecules. b. Solution shall undergo a tapered mixing intensity slope as it exits the initial high sheer zone and passes through a second low shear zone, isolated by a baffle.
c. The design shall have primary mixing and post-dilution to expedite the polymer activation process by maximizing the value of breaker surfactant present in emulsion polymer, as per the AWWA Standard for Polyacrylamide (ANSI/AWWA B453-06).
d. Polymer activation efficiency shall be consistent over the dilution water range.
e. The volume of the mixing chamber shall be a minimum of 1.0 gallon to provide sufficient residence time for activating and disentangling polymer molecules.

2. Mixing chamber shall be transparent with acrylic barrel to allow viewing of mixing intensity. Opaque mixing chambers shall be unacceptable.

3. Impeller shall be driven by a 1 HP maximum washdown duty motor. a. Motor shall be TEFC.
b. Impeller speed shall be 3450 rpm, minimum.
c. Motor shall be direct-coupled to impeller shaft.

4. Mixing chamber shall include a stainless steel injection check valve.

5. Mixing impeller shall be cast brass construction with holes drilled on the backside of the impeller. The impeller, when rotating, shall pull fluid from around the mechanical seal pocket to eliminate the need for a separate mechanical seal flushing system.

6. In order to quantify the mixing intensity in the mix chamber, the applied horsepower shall be defined by measuring the difference in torque when the mix chamber is empty versus being full of water. This value shall be the basis of determining the mixing intensity defined as "G" value.

7. The G-value in the high shear mixing zone shall exceed 14,000 sec-1 to effectively disperse polymer gels to prevent fisheye formation.

8. The G-value in the low shear mixing zone shall be lower than 3,500 sec-1 to avoid damaging polymer chains.

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B. Dilution Water Control

1. Dilution water shall be split into two streams.
a. Primary water flow shall supply the mixing chamber.
b. Secondary water flow shall be used to post dilute the activated polymer stream.
c. These two streams shall be completely blended by a static mixer prior to exiting the unit.

2. Unit shall have an electric solenoid valve for on/off control of total dilution water flow. Valve shall have brass body with NBR seals and NEMA 4X rated coil enclosure.

3. Flow indicators and flow control valves shall be provided for each dilution water stream.

4. Dilution water and solution output connections shall include 304 stainless steel unions connected to the chassis.

C. Pump

1. Unit shall have a neat polymer metering pump.
a. Pump shall be positive displacement, progressing cavity type. b. Rotor shall be 316 stainless steel.
c. Stator shall be Viton.
d. Pump shall have mechanical seal. Pumps supplied with packing seals shall not be considered equal.
e. Rotor speed shall not exceed 500 rpm.

2. Pump shall be driven by a 1/2 HP, TEFC, AC motor.
a. Variable speed shall be provided by a VFD controller. b. Motor shall be direct-coupled to a gear reducer.
c. Pump shall be direct-coupled to gear reducer.

3. Pump shall include a pressure relief valve and pressure gauge located on the discharge side of the pump and piped to the pump suction. Pressure relief valve shall be PVC construction with Viton seals. Systems utilizing pressure relief on the mix chamber discharge and requiring a connection to drain shall not be considered equal.

4. A suitably-sized calibration cylinder shall be mounted to the frame with PVC isolation ball valves. Cylinder shall be calibrated in mL, and be constructed of clear PVC with slip on cap and 1/2 inch NPT vent connection.

D. Controls

1. System shall be supplied with waterproof control enclosure. Unit shall be powered through an on-off-remote circuit controlled by a three position switch. a. In the remote switch position, the unit shall accept a run signal. b. Unit is manually powered in the on position.

2. A VFD shall be supplied to vary pump speed. A keypad shall be mounted on the motor control enclosure for VFD control and display.
a. VFD shall accept single phase power and convert it to three phase output. b. Up/Down arrows shall control motor speed in manual mode. c. VFD shall accept 4-20 mA input signal to vary pump speed in automatic mode.

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3. Unit shall accept a 4-20 mA analog signal to pace the polymer metering pump. a. The controller shall also have manual motor speed control via a potentiometer for touchpad for VFD.

4. Unit shall detect loss of water flow, sensing that water flow has been interrupted for any reason, will place the polymer pump and mix chamber on standby and will restart it automatically when flow is restored.

5. An integral timer shall monitor loss of flow and energize contacts indicating alarm after 15 seconds of continuous loss.

6. The following status and alarm signals shall be provided as dry-contacts. a. In Remote status
b. Running status
c. Fail Alarm status

7. Unit shall provide a 4-20 mA analog output signal proportional to pump speed for remote monitoring.

2.02 TECHNICAL DATA
A. Connections – Plumbing

1. Dilution water inlet, 1-1/2” FNPT

2. Neat polymer inlet, 1/2” FNPT

3. Solution discharge, 1-1/2” FNPT
B. Connections – Electrical

1. Standard, grounded male plug – 120 / 1 / 60, 17 amps

2. Terminal blocks – 4-20 mA signal input

3. Terminal blocks – dry contact input for remote start

4. Terminal blocks – dry contact alarm output

5. Terminal blocks – dry contact run output
C. Dimensions

1. Frame – 37” wide x 28” deep x 47” high (94x71x120 cm) D. Materials of Construction

1. Structural frame – 304 stainless steel

2. Plumbing – PVC, nylon, stainless steel

3. Mixing chamber – PVC, acrylic
E. Performance

1. Dilution water – 120-1200 GPH primary mixing (454-4542 LPH) 120-1200 GPH post dilution (454-4542 LPH)

2. Metering pump – 15-3.0 GPH neat polymer
PART 3 - EXECUTION

3.01 INSTALLATION
A. Install equipment per the contract documents and manufacturer’s recommendations.

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3.02 WARRANTY
A. The standard warranty extends for a minimum period of twelve (12) months from the date of start-up by an authorized manufacturer technician or eighteen (18) months from the date of shipment, whichever occurs first.

B. Damage due to makeup water particulates will not be considered as a warranty defect and will be the responsibility of the owner.

3.03 ACCESSORIES
A. Pressure reducing valve: A suitably sized pressure reducing valve shall be supplied for installation in the dilution water line. Pressure reducing valve shall be constructed of bronze with adjustable output pressure of 25-75 psig to reduce incoming line pressure variations.

Pressure reducing valve shall be as manufactured by Watts.

B. Drumstick: A rigid drumstick suitable for mounting in the neat polymer drum bung or vent connection shall be supplied to completely evacuate the drums contents. The drumstick shall be supplied with 2 inch NPT and 3/4 inch NPT connections for connection to either port. Drumstick construction shall be PVC.

C. Drum Mixer: A bayonet mount drum mixer shall be supplied for mixing neat polymer drum contents. Mixer shall include a 1/2 hp, 1725 rpm TEFC motor with 28 inch long mixer shaft, two 4 inch long collapsible mixing blades, 8 foot power cord and on/off switch. Mounting plate shall include 2 inch bung mount and shall be constructed of mild steel with powder epoxy coating. Electrical requirements shall be 120 VAC/ 1 phase/ 60 Hz.

D. Tote Suction Hose: A tote suction hose with isolation ball valve, quick disconnect and 10 feet of 1 inch braided PVC hose shall be supplied for connection to neat polymer tote.

E. A neat polymer thermal loss of flow switch shall be supplied on the discharge of the neat polymer metering pump to detect absence of polymer flow. Thermal flow switch assembly shall include sensor, flow block and controls. Alarm output contacts shall be supplied for the plant control system after adjustable time delay. Neat polymer flow must be greater than 0.25 gph for switch to function.

F. Spare parts kit: Spare parts kit shall include mechanical seal, mixing chamber o-rings, injection check valve, and pump stator.

END OF SECTION

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West Yost – March 2023 15050 - 1 City of Ukiah
592-50-22-14 Piping Systems Thickening and Dewatering
Improvements
SECTION 15050

PIPING SYSTEMS
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Systems of process piping and general requirements for piping systems.

B. Detailed specifications for the components listed on the Piping System Specification Sheets (PIPE SPEC) are found in Division 15 and other technical specifications.

C. Use this section in conjunction with those sections.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittals

2. Section 01600 – Materials and Equipment

3. Section 02300 – Earthwork

4. Section 09960 – High Performance Coatings

5. Section 15060 – Pipe Hangers and Supports

6. Section 15076 – Piping and Valve Identification Systems

7. Section 15097 – Seismic Restraints for Piping

8. Section 15110.5 – Valves and Appurtenances

9. Section 15115.1 – Eccentric Plug Valves

10. Section 15122 – Piping Connections

11. Section 15141 – Steel Pipe

12. Section 15143 – Ductile Iron Pipe

13. Section 15145 – Polyvinyl Chloride (PVC) Pressure Pipe

14. Section 15201 – Stainless Steel Piping

15. Section 15250 – Insulation for Exposed Piping and Equipment

16. Section 15996 – Testing Pressure Pipe

1.03 DEFINITIONS
A. Pressure terms used in Division 15 are defined as follows:

1. Maximum: The greatest continuous pressure at which the piping system operates.

2. Test: The hydrostatic pressure used to determine system acceptance.

B. Hazardous Gas Systems

1. Propane

2. Natural gas

3. Sludge gas

4. Hydrogen

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5. Other flammable gases

1.04 SUBMITTALS
A. Comply with Section 01330.

B. Equipment and Piping Coordination and Installation Drawings

1. The drawings show only the general arrangements of the project equipment, piping and appurtenances.

2. Prepare and submit coordination and installation drawings.

Show the specific locations and dimensions of equipment, tanks, control panels, piping, pipe hangers and supports, seismic restraints for piping, trench and rack mounted piping, valves, appurtenances, platform gratings, and related items.

Base upon dimensions for the actual equipment to be furnished from the accepted shop drawings.

3. The coordination and installation drawings are required for the following systems:

Chemical storage, feed, and piping systems.

Equipment and associated piping in Division 11.

HVAC and plumbing piping systems.

Exposed and buried piping in Division 15, Sections 14143, 15145 and 15201.

4. Drawing Requirements
Prepared with AutoCAD 2010 or later software.

Use PC compatible hardware platform using Microsoft Windows XP operating system.

Submit drawing files with each piping system print.

Submit drawing files on rewritable CDROM disks.

Print at a minimum scale of 3/8” = 1’, on a minimum sheet size of 11” x 17”.

Show piping in plan and section views, or alternatively, as isometric piping spool drawings.
1) Piping of nominal size less than 8” may be single line with scaled lay lengths and fittings.
2) Show piping of size 8” and greater double line with scaled flanges, lay lengths, and fittings. Each pipe run shall be dimensioned. 3) Show all pipe supports, thrust restraints, and seismic bracing. 4) Show all devices indicated on the mechanical layout and schematic drawings and the P&ID drawings.

5. During preparation of the drawings, provide interface and coordination between all equipment suppliers and subcontractors, and, including as a minimum, the structural, architectural, mechanical, electrical, and instrumentation and control elements of the work, including the process and instrumentation diagrams.

6. Include load and sizing calculations for pipe supports, thrust restraints, seismic bracing and related items which have been prepared, stamped, and signed by a professional civil, mechanical, or structural engineer licensed by the State of California. See also Sections 15060 and 15097.

7. Complete submittal and review of the coordination and installation drawings at least 30 days prior to commencement of piping fabrication for each system.

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8. For piping systems that are field-fabricated, complete submittal and review at least 30 days prior to construction of each system.

1.05 QUALITY ASSURANCE
A. Fittings and coupling compatibility: To assure uniformity and compatibility of piping components, fittings and couplings for grooved end piping systems and plastic piping systems shall be furnished by the same manufacturers.

1.06 PRODUCT DELIVERY, STORAGE, AND HANDLING
A. Comply with Section 01600.

PART 2 - PRODUCTS

2.01 PIPING MATERIALS
A. Unless otherwise specified, select piping materials, including pipe, gaskets, fittings, connection and joint assemblies, linings and coatings, from those listed on the piping system specification sheets.

B. Comply with detailed specifications for each type of pipe and piping appurtenance specified in Division 2 and the other sections of Division 15.

C. If, in addition to the pipe service symbol, the Drawings contain specific callouts for pipe materials, the information on the Drawings governs on an exception basis.

D. Gasket Material: As specified for individual piping systems and as specified in Section 15122.

2.02 VALVES
A. For same size and service provide from a single valve manufacturer.

B. Provide packing made from non-asbestos material.

C. Ensure actual lengths of valves are within 1/16” (plus or minus) of the manufacturer’s specified length.

D. Flanges: meet the requirement of ANSI B16.5.

E. Push-on and mechanical joints: meet the requirements of AWWA C111.

F. Valve operators are specified in Sections 15110.5.

PART 3 - EXECUTION

3.01 INSTALLATION
A. Location

1. Provide as specified except for adjustments to avoid architectural and structural features and coordinate with electrical construction.

B. Piping Sizes

1. Where the size of piping is not specified, provide piping of the sizes required by UPC.

C. Pipe Support, Anchorage, and Seismic Bracing

1. Support by anchor brackets, guides, saddles or hangers.

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2. See Drawings and specifications for acceptable types of supports, guides, saddles, hangers and structure attachments for general pipe support, expansion/ contraction and for seismic bracing, as well as anchorage details.

3. Minimum spacing: as shown or specified.

4. Vertically support piping by anchor brackets, guides, saddles or hangers and seismically brace where indicated to resist lateral load.

5. Provide support on each run at each change of direction.

6. Material: Type 316 stainless steel as indicated on the mechanical detail drawings and in Sections 15060 and 15097.

7. Unless otherwise specified do not use existing pipes and supports to support new piping.

D. Anchorage for Buried Piping

1. Anchor all plugs, caps, tees and bends in buried pressure piping systems using restrained joints as specified.

2. Unless specified otherwise, reaction backing consisting of concrete thrust blocks is not an acceptable substitute for restrained joints and will not be permitted.

E. Bedding and Backfill

1. Bedding and backfill for buried piping: as specified in Section 02300.

F. Pipe Identification

1. Place plastic tracer tape and magnetic tracer tape as specified in Section 15076 above the centerline of each buried pipe.

2. Identify exposed interior and exterior piping, as specified in section 15076.

G. Pipe Insulation

1. Unless otherwise noted on the drawings or specified, insulate all exposed piping of size 4” and less installed outdoors and in areas and locations subject to freezing.

2. Insulate exposed piping in unheated ceiling or attic space areas.

3. Insulate exposed piping in areas above suspended or other type ceilings or above electrical equipment for condensation control.

4. Comply with Section 15250.

3.02 TESTING
A. General

1. Upon completion of piping, but prior to application of insulation on exposed piping, test the piping systems.

Pressures, media and test durations: as specified in the pipespec.

Isolate equipment which may be damaged by the specified test conditions.

Use calibrated test gages and calibrated volumetric measuring equipment to determine leakage rates.

Select each test gage so that the specified test pressure falls within the upper half of the gage’s range.

Unless otherwise specified, notify the Construction Manager 24 hours prior to each test.

Test in accordance with Sections 15996 .

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2. Unless otherwise specified, tests include existing piping systems which connect with new pipe systems.

Test existing pipe to the nearest existing valve.

Repair any piping which fails the test.

Repair of existing piping will be considered and paid for as extra work.

B. Gas, Air, and Vapor Systems

1. Unless otherwise specified, comply with the following:

Pipeline Size Specified Test Pressure Testing Medium
2-inch and smaller 75 psi or less Air or water
2-inch and smaller Greater than 75 psi Water
Greater than 2-inch 3 psi or less Air or water
Greater than 2-inch Greater than 3 psi Water

2. Allowable leakage rate for hazardous gas systems, insulated systems, and systems tested with water is zero at the specified test pressure throughout the specified test period.

3. Allowable leakage rate for other systems tested with air is a maximum pressure drop of 5% of the specified test pressure for the duration of the period. Prior to starting a test interval using air, set air at ambient temperature and specified test pressure.

C. Liquid Systems

1. Allowable leakage rate is zero at the specified test pressure throughout the specified duration for the following systems:

Exposed piping, buried insulated piping, and buried or exposed piping carrying liquid chemicals.

D. Drains

1. Building and structure drain systems, other than pumped drain systems, shall be tested in accordance with UPC.

3.03 CLEANING AND FLUSHING
A. General

1. Clean piping systems following completion of testing and prior to connection to operating, control, regulating, or instrumentation equipment.

2. The Contractor may clean and test sections of buried or exposed piping systems.

Use of this procedure, however, will not waive the requirement for a full pressure test of the completed system.

3. Unless specified otherwise, first clean piping 24” in diameter and smaller by pulling a tightly fitting cleaning ball or swab through the system.

4. Piping larger than 24” in diameter may be cleaned manually or with a cleaning ball or swab.

B. Temporary Screens

1. Upon completion of the cleaning, connect the piping systems to related process equipment.

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2. Provide with locator tabs that remain visible from the outside when the screens are in place.

3. Insert in pipelines at the suction of pumps and compressors in accordance with the following table:

Equipment suction or piping size,
inches
Maximum screen opening,
inches
0 –1 1/16
1-1/4 – 3 1/4
3-1/2 – 6 1/2
Over 6 1

4. Maintain the screens during testing, initial start-up, and initial operating phases of the commissioning process.

In special cases, screens may be removed as required for performance tests.

Remove temporary screens and make the final connections after the screens have remained clean for at least 24 consecutive hours of operation. Systems handling solids are exempted.

C. Gas and Air Systems (Not Used)
D. Liquid Systems

1. After completion of cleaning, unless otherwise specified, flush with clean water.

2. With temporary screens in place, circulate the liquid through the piping system using connected equipment for a minimum period of 15 minutes and until no debris is collected on the screens.

3.04 PIPING SPECIFICATION (PIPESPEC)
A. Piping and valves for groupings of similar plant processes or types of service lines are specified on individual piping specifications (PIPESPECS).

B. Piping services are grouped according to the chemical and physical properties of the fluid conveyed and/or by the temperature or pressure requirements.

C. Each grouping of services (PIPESPEC) is identified by a piping system number.

D. Piping services specified in the PIPESPECS and on the Plans are alphabetically arranged by designated service symbols as shown in Table A.

E. Table A also indicates the system number, fluid category, and pipe marker background color of each service.

Table A. Piping Services
Symbol Service System Fluid Category
Pipe Marker
Background
D Drain, Process 14 Drain Green
FTH Frothing 19 Chemical Yellow
MS Mixed Sludge 16 Sludge Green
POL Polymer 19 Chemical Yellow
PSC Primary Scum 16 Scum Green

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Symbol Service System Fluid Category
Pipe Marker
Background
SL Sludge 16 Sludge Green
WW Wash Water 11 Water White
RCW Reclaimed Water 11 Reclaimed Wastewater Purple
Notes:

1. This table contains only those pipe services which require work under this contract.

3.05 PIPING SPECIFICATION SHEET—PIPESPEC – SYSTEM 11
A. Piping Symbol/Service:

1. WW – Wash Water

2. RCW – Reclaimed Water
B. Test Requirements:

1. Medium: Water

2. Pressure:

WW: 150 psi

3. Duration: 120 minutes
C. Gasket Requirements:

1. Flange: Compressed gasketing consisting of organic fibers (Kevlar) and neoprene binder

2. Push-on/Mech Cpl: Nitrile or Neoprene
D. Exposed Pipe and Valves (See Remarks): (See drawings for pipe size and valve type.)

1. (3” and smaller)
Pipe:
1) Steel; ASTM A53, galvanized.
2) Conn; taper threaded, ANSI B1.20.1. See Remarks.
3) Ftgs; malleable iron, ASTM A197, ANSI B16.3, Class 150, galvanized.
4) PVC, Sch 80, where shown on Drawings. Ref. Section 15145.

Valves:
1) Ball
a) Jamesbury Fig. 351,
b) Nibco T-580,
c) or equal.
2) Globe
a) Crane 7TF or 17TF,
b) Lunkenheimer 123 or 214,
c) or equal.
3) Swing check
a) Crane 137,
b) Lunkenheimer 230,

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c) or equal.

2. (4” thru 12” Pipe)
Pipe
1) DIP; AWWA C151, per Section 15143.
2) Connections; Flanged. See Remarks.
3) Fittings; DIP per AWWA C110 or AWWA C153
4) Linings and coatings
a) All pipe and fittings shall be double thickness cement mortar lined per AWWA C104 and coated per Section
09960.

Valves:
1) Butterfly: Ref. Section 15110.5.
2) Check
a) Ref. Section 15110.5.

E. Buried and Encased Pipe and Valves (See Remarks): (See drawings for pipe size and valve type. Omit coating on encased pipe.)

1. (3” and smaller)
Pipe
1) PVC; ASTM D1784, Class 12454-B, ASTM D1785, Sch 80.
2) Ref. Section 15145.
3) Provide plastic and magnetic tracer tape.
4) Conn; plain end; solvent weld with threaded or flanged adapters for valves.
5) Ftgs; PVC, Sch. 80, socket weld.

Valves
1) Gate
a) Ref. Section 15110.5, with extension stem and valve box. b) Coating to be cement mortar.

2. (4” and Larger)
Pipe
1) DIP; AWWA C151, per Section 15143.
2) Connections; Restraint joint per Section 15143.
3) Fittings; DIP per AWWA C110 or AWWA C153.
4) Lining and Coating; All pipe and fittings: double thickness cement mortar lined per AWWA C104 and
5) Polyethylene encapsulated per AWWA C105.

Valves
1) Eccentric Plug; per Section 15115.1
F. Remarks: Concrete encase all piping beneath structures.

3.06 PIPING SPECIFICATION SHEET—PIPESPEC – SYSTEM 14
A. Piping Symbol/Service

1. D—Process Drain

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B. Test Requirements

1. Medium: Water

2. Pressure: 50 psig

3. Duration: 120 minutes
C. Gasket Requirements

1. Flange: Compressed gasketing consisting of organic fibers

2. (Kevlar) and neoprene binder

3. Push-on/Mech Cpl: Nitrile or Neoprene
D. Exposed Pipe and Valves: (See drawings for pipe size and valve type.)

1. (1” thru 3”)
Pipe
1) Steel; ASTM A53, galvanized. Ref. Section 15141.
2) Conn; taper threaded, ANSI B1.20.1
3) Ftgs; malleable iron, ASTM A197, ANSI B16.3, Class 150, galvanized.

Valves
1) Eccentric Plug; per Section 15115.1

2. (4” and Larger)
Pipe
1) DIP; AWWA C151, per Section 15143.
2) Connections; Flanged.
3) Fittings; DIP per AWWA C110 or AWWA C153
4) Linings and coatings; All pipe and fittings shall be double thickness cement mortar lined per AWWA C104 and coated per Section 09960.

Valves
1) Eccentric plug; per Section 15115.1
E. Buried and Encased Pipe and Valves: (See drawings for pipe size and valve type. Omit coating on encased pipe.)

1. (3” and smaller)
Pipe
1) PVC; ASTM D1784, Class 12454-B, ASTM D1785,
2) Sch 80. Ref. spec Section 15145.
3) Provide plastic and magnetic tracer tape.
4) Conn; plain end; solvent weld with threaded or flanged adapters for valves.
5) Ftgs; PVC, Sch. 80, socket weld.

Valves: Not applicable

2. (4” and Larger)
Pipe
1) DIP; AWWA C151, per Section 15143.
2) Connections; Restraint joint per Section 15143.

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3) Fittings; DIP per AWWA C110 or AWWA C153.
4) Lining and Coating: All pipe and fittings: double thickness cement mortar lined per AWWA C104 and Polyethylene encapsulated per AWWA C105.

Valves
1) Eccentric Plug; per Section 15115.1.

F. Remarks:

1. Concrete encase all piping beneath structures.

2. Omit polyethylene encasement on concrete encased pipes.

3.07 PIPING SPECIFICATION SHEET—PIPESPEC – SYSTEM 16
A. Piping Symbol/Service

1. MS – Mixed Sludge

2. PSC – Primary Scum

3. SL – Sludge
B. Test Requirements

1. Medium: Water

2. Pressure: 150 psig

3. Duration: 120 minutes
C. Gasket Requirements

1. Flange: Compressed gasketing consisting of organic fibers (Kevlar)and neoprene binder

2. Push-on/Mech Cpl: Nitrile or Neoprene
D. Exposed Pipe and Valves (See drawings for pipe size and valve type.)

1. Pipe all sizes
DIP; AWWA C151, per Section 15143.

Connections; Flanged.

Fittings; DIP per AWWA C110 only. AWWA C153 not permitted.

Linings and Coatings
1) All pipe and fittings: glass-lined per Section 15143 and coated per Section 09960.

2. Valves
Eccentric Plug; per spec Section 15115.1, glass-lined to match pipe lining.

E. Buried and Encased Pipe and Valves: (See drawings for pipe size and valve type. Omit coating on encased pipe.)

1. Pipe all size
DIP; AWWA C151, per Section 15143.

Connections; Restraint joint per Section 15143.

Fittings; DIP per AWWA C110 only. AWWA C153 not permitted.

Provide plastic and magnetic tracer tape.

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Lining and Coating
1) All pipe and fittings: glass-lined per Section 15143 and Polyethylene encapsulated per AWWA C105.

2. Valves
Eccentric Plug
1) Per Section 15115.1, glass-lined to match pipe lining. 2) Coating: M-1 per Section 09960
F. Remarks:

1. Concrete encase all piping beneath structures.

2. Omit polyethylene encasement on concrete encased pipes.

3.08 PIPING SPECIFICATION SHEET—PIPESPEC – SYSTEM 19
A. Piping Symbol/Service

1. FTH – Froth

2. FTH - Frothing

3. POL - Polymer
B. Test Requirements

1. Medium: Water

2. Pressure: 150 psig

3. Duration: 120 minutes
C. Gasket Requirements

1. Flange: PTFE bonded EPDM, full-face gaskets, ANSI B16.1, Garlock, Gylon 3504, or equal

2. Push-on/Mech Cpl: N/A
D. Exposed Pipe and Valves: (See drawings for pipe size and valve type.)

1. Pipe: FTH and POL (All sizes)
PVC; ASTM D1784, Class 12454-B, NSF certified, ASTM D1785, Sch. 80.

Pipe and fittings exposed: Painted. Ref. Section 15145.

Conn; plain end, solvent weld, flanged for valves 3” and larger.

Ftgs; PVC, Sch. 80, solvent weld.

2. Valves (4” and less): (Unless otherwise shown on Contract Drawings) Ball
1) FTH and POL service: PVC body, Chemtrol Tru Bloc TU Series, Asahi/America DuoBloc TU Series, GSR TU Series, or equal, with Teflon seats and EPDM O-rings. (See Remark 1.)
2) PAS service: Passivated Type 316 SS flanged with vented ball; Apollo 87A, Nibco F-510-S6-R-66-FS, or approved equal.

E. Buried Pipe and Valves: (See drawings for pipe size and valve type.)

1. (All sizes) Pipe
PVC; same as exposed. Provide plastic and magnetic tracer tape.

Conn; same as exposed.

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Ftgs; same as exposed.

2. (2” and less)
Valves: Ball; same as exposed with extension stem and valve box.

3. (2 1/2” and larger)
Valves: Diaphragm; same as exposed with extension stem and valve box.

4. PAS service: not applicable
F. Unless otherwise specified, all exposed Frothing piping shall be heat traced with selfregulating Tyco Thermal Controls Raychem 5BTV1-CT, Chromalox, Thermo, or equal. All heat traced pipe shall be insulated with ½ inch thick Accessible Products model 351, prejacketed techlite foam insulation or equal.

END OF SECTION

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SECTION 15060

PIPE HANGERS AND SUPPORTS

GENERAL

1.01 SECTION INCLUDES
A. Hangers and supports for all piping systems specified in Sections 15050.

B. This section does not include pipe supports for fire sprinkler systems, pipe anchors, guides or seismic restraints.

C. For seismic restraint requirements for piping, see Section 15097.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this section

1. Section 01330 – Submittals

2. Section 01612 – Seismic Design Requirements

3. Section 05500 – Miscellaneous Metals

4. Section 15050 – Piping Systems

5. Section 15097 – Seismic Restraints for Piping

6. Section 15250 – Insulation for Exposed Piping and Equipment

1.03 QUALITY CONTROL
A. Operating Conditions

1. The hangers and supports specified in this section are provided to resist pipe loads occurring primarily in the downward (gravity) direction. For the purpose of pipe hanger and support selection, this section establishes pipe support classifications based on the operating temperatures of the piping contents. Pipe support classifications are as follows:
a. Hot Systems: A. 120F to 450F.
b. Ambient Systems: B. 60F to 119F.
c. Cold Systems: C-1. 33F to 59 F, C-2. -20F to 32F.

B. Hanger and Support Selection

1. Select pipe hangers and supports as specified. Base selections upon the pipe support classifications specified in this section, the piping insulation thickness specified in Section 15250, and any special requirements which may be specified in the contract documents.

2. Review the piping layout in relation to the surrounding structure and adjacent piping and equipment before selecting the type of support to be used at each hanger point.

3. Design and select hangers and supports to withstand all static and specified dynamic conditions of loading to which the piping and associated equipment may be subjected. As a minimum, consider the following conditions:
a. Weights of pipe, valves, fittings, insulating materials, suspended hanger components, and normal fluid contents.

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b. Weight of hydrostatic test fluid or cleaning fluid if normal operating fluid contents are lighter.
c. Reaction forces due to the operation of safety or relief valves. d. Wind, snow, or ice loadings on outdoor piping.

4. Size hangers and supports to fit the outside diameter of pipe, tubing, or, where specified, the outside diameter of insulation.

5. Where negligible movement occurs at hanger locations, use rod hangers for suspended lines, wherever practical. For piping supported from below, use bases, brackets or structural cross members.

6. For the suspension of size 2-1/2” and larger pipe and tubing, use hangers capable of vertical hanger component adjustment under load.

7. Provide supporting systems which provide for and control the free or intended movement of the piping including its movement in relation to that of connected equipment.

8. Where there is horizontal movement at a suspended hanger location, select hanger components to allow for swing. Do not permit the vertical angle of the hanger rod to exceed 4º at any time.

9. Do not permit contact between a pipe and hanger or support component, constructed of dissimilar metals. Prevent contact between dissimilar metals when supporting copper tubing by using copper-plated, rubber, plastic or vinyl coated, or stainless steel hanger and support components.

10. Unless otherwise specified, existing pipes and supports shall not be used to support new piping.

11. Unless otherwise specified, pipe support components shall not be attached to pressure vessels.

12. Stock hanger and support components shall be used wherever practical.

1.04 INDUSTRY STANDARDS
A. This section contains references to the following documents. They are a part of this section as specified and modified. In case of conflict between this section and the listed documents, the requirements of this section shall prevail.

B. Unless otherwise specified, references to documents shall mean the documents in effect at the time of Advertisement for Bids or Invitation to Bid (or on the effective date of the Agreement if there were no Bids).

C. If referenced documents have been discontinued by the issuing organization, references to those documents shall mean the replacement documents issued or otherwise identified by the organization or, if there are no replacement documents, the last version of the document before it was discontinued.

D. Where document dates are given in the following listing, reference to those documents shall mean the specific document version associated with that date, whether or not the document has been superseded by a version with a later date, discontinued, or replaced.

Reference Title
AISC Manual of Steel
Construction
American Institute of Steel Construction, Manual of Steel Construction, - 13th Edition
CBC California Building Code
FEDSPEC WW-H-171e Hangers and Supports, Pipe

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Reference Title
MFMA-4 Metal Framing Manufacturer’s Association, Metal Framing Standards Publication
MSS SP-58 Manufacturers Standardization Society Pipe Hangers and Supports— Materials, Design and Manufacture
MSS SP-69 Manufacturers Standardization Society Pipe Hangers and Supports— Selection and Application

1.05 SUBMITTALS
A. Provide hanger and support locations, load calculations, and manufacturer layout and detail drawings as part of the submittals for equipment and piping coordination and installation drawings required in Section 15050.

B. The load and support design calculations shall be stamped and signed by a licensed Civil or Structural Engineer in the State of California. Comply with Section 01612 and 05500.

Coordinate calculations with those required by Section 15097.

PRODUCTS

2.01 MANUFACTURERS
A. B-Line
B. Carpenter & Paterson
C. Kin-Line
D. Anvil International
E. Michigan
F. Pipe Shields Incorporated
G. Superstrut
H. Unistrut
I. Or equal as specified in Section 01330
J. Comply with MSS SP-69 and FEDSPEC WW-H-171e for pipe support components and MFMA-4 for framing systems

2.02 PRODUCTS
A. Material

1. Pipe hangers and supports, structural attachments, rack and trapeze supports, fittings and accessories: 316 stainless steel.

2. Nuts, bolts, washers, and other fasteners: Type 316 stainless steel.

3. Safety end caps on all framing channels.

4. Comply with MSS SP-58 for supports and MFMA-4 for framing systems.

B. Pipe Hangers and Supports

1. Type 1 – Clevis Pipe Hanger, configuration and components equivalent to MSS and FEDSPEC Type 1.
a. Steel pipe (insulated): B-Line B3100, Anvil International 260, or equal, with insulation shield.

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b. Steel pipe (uninsulated): B-Line B3100, Anvil International 260, or equal. c. Cast and ductile iron pipe: B-Line B3102, Anvil International 590, or equal. d. Copper pipe (uninsulated): B-Line B3104 CT, Anvil International CT-65, or equal.
e. Copper pipe (insulated): B-Line B3100, Anvil International 260, or equal, with insulation shield.
f. Plastic pipe: B-Line B3100 C, Carpenter & Paterson Fig. 100PVC, or equal.

2. Type 2 – J Pipe Hanger, configuration and components equivalent to MSS Type 5 a. Steel pipe: B-Line B3690, Anvil International 67, Michigan model 418, or equal.
b. Copper and plastic pipe: Michigan model 419, Unistrut J 1205N series, or equal.

3. Type 3 – Double Bolt Pipe Clamp, configuration and components equivalent to MSS and FEDSPEC Type 3.
a. Steel pipe (insulated): B-Line B3144, Anvil International 295, or equal, with insulation shield. Insulation shield is optional for hot and ambient systems. b. Steel pipe (uninsulated): B-Line B3144, Anvil International 295, or equal. c. Copper pipe (insulated only): B-Line B3144, Anvil International 295, or equal, with insulation shield.

4. Type 4 – Adjustable Roller Hanger, configuration and components equivalent to MSS Type 43 and FEDSPEC Type 44.
a. Steel pipe (insulated): B-Line B3110, Anvil International 181, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3110, Anvil International 181, or equal. c. Copper pipe (insulated only): B-Line B3110, Anvil International 181, or equal, with insulation shield.
d. Plastic pipe: B-Line B3110, Anvil International 181, or equal.

5. Type 5 – Single Pipe Roll, configuration and components shall be equivalent to MSS Type 41 and FEDSPEC Type 42.
a. Steel pipe (insulated): B-Line B3114, Anvil International 171, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3114, Anvil International 171, or equal. c. Plastic pipe: B-Line B3114, Anvil International 171, or equal.

6. Type 6 – Framing Channel Pipe Clamp
a. Steel pipe (uninsulated):
1) Pipe size 3/8” and 1/2”: 16-gage;
2) 3/4” through 1 1/4”: 14 gage;
3) 1-1/2” through 3”: 12-gage;
4) 3 1/2” through 5”: 11- gage;
5) 6 and 8”: 10-gage;
b. Michigan Model 431, Powerstrut PS 1100, Unistrut P 1109 series, or equal.
c. Steel pipe (insulated): Pipe clamp as described in Paragraph 2.02 B.6.a with insulation shield.

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d. Copper (uninsulated) and plastic pipe:
1) Pipe size 3/8” and 1”: 16-gage;
2) 1-1/4” and 1-1/2”: 14-gage;
3) 2” through 3”: 12-gage;
4) 4”: 11-gage;
5) Clamp: copper-plated, plastic coated or lined with dielectric material;
6) Michigan model 432, Powerstrut PS 1200, Unistrut P 2024C and P 2024PC series, or equal.
e. Copper pipe (insulated): Pipe clamp shall be as described in Paragraph

2.02 B.6.a with insulation shield.

7. Type 7 – U-Bolt Configuration equivalent to MSS and FEDSPEC Type 24. a. Steel pipe (uninsulated): Anvil International. 137, B-Line B3188, or equal. b. Steel pipe (insulated): Anvil International. 137, B-Line B3188, or equal, with insulation shield.
c. Cast and ductile iron pipe: Anvil International. 137, B-Line B3188, or equal. d. Copper pipe (uninsulated): Carpenter & Paterson Fig. 222 CT, B-Line B3501 CT, Anvil International. 137C, or equal.
e. Copper pipe (insulated): Anvil International. 137, B-Line B3188, or equal, with insulation shield.
f. Plastic pipe: Anvil International. 137C, Michigan model 151, B-Line B3188 C, or equal.

8. Type 8 – Adjustable Pipe Roll Support
a. Steel pipe (insulated): B-Line B3122, Anvil International. 177, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3122, Anvil International. 177, or equal. c. Copper pipe (insulated only): B-Line B3122, Anvil International. 177, or equal, with insulation shield.
d. Plastic pipe: B-Line B3122, Anvil International. 177, or equal.

9. Type 9 – Welded Pipe Stanchion
a. Minimum material thickness: standard schedule pipe, cut to match contour of the pipe elbow.
b. Limit use of this support to ambient systems only.

10. Type 10 – Pipe Stanchion Saddle and Yoke, comply with MSS Type 37 and FEDSPEC Type 38.
a. Steel pipe (insulated): Carpenter & Paterson Fig. 125, B-Line B3090, or equal, with insulation shield.
b. Steel pipe (uninsulated): Carpenter & Paterson Fig. 125, B-Line B3090, or equal.
c. Cast and ductile iron pipe: Carpenter & Paterson Fig. 125, B-Line B3090 NS, or equal.
d. Copper pipe (uninsulated): Carpenter & Paterson Fig. 125, B-Line B3090, or equal, with insulation shield or lined with dielectric material. e. Copper pipe (insulated): Carpenter & Paterson Fig. 125, B-Line B3090, or equal, with insulation shield.
f. Plastic pipe: Carpenter & Paterson Fig. 125, B-Line B3090, or equal.

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11. Type 11 – Offset Pipe Clamp, Provided with configuration and components specified using standard designs offered by a pipe hanger component manufacturer.
a. Steel pipe (insulated): B-Line B3148, Anvil International 103, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3148, Anvil International 103, or equal. c. Cast and ductile iron pipe: B-Line B3148 NS, Anvil International 103, or equal.
d. Copper pipe (insulated): B-Line B3148, Anvil International. 103, or equal, with insulation shield.
e. Copper pipe (uninsulated): B-Line B3148, Anvil International. 103, or equal, lined with dielectric material.
f. Plastic pipe: B-Line B3148, Anvil International. 103, or equal. g. Vertical pipe support applications: as specified above except do not use insulation shields for insulated pipe.

12. Type 12 – Riser Clamp, configuration and components equivalent to MSS and FEDSPEC Type 8.
a. Steel pipe (insulated): B-Line B3373, Anvil International 261, or equal. b. Steel pipe (uninsulated): B-Line B3373, Anvil International 261, or equal. c. Cast and ductile iron pipe: B-Line B3373, Anvil International 261, or equal. d. Copper pipe (insulated): B-Line B3373 CT, Anvil International CT-121, Michigan model 511, or equal.
e. Copper pipe (uninsulated): B-Line B3373 CT, Anvil International CT-121, Michigan model 511, or equal.
f. Plastic pipe: B-Line B3373, Anvil International. 261c, or equal.

13. Type 13 – Framing Channel Pipe Strap, configuration equivalent to MSS Type 26. a. Steel pipe (uninsulated): Superstrut No. C-708-U, Powerstrut PS 3126, Kin-Line No. 477, or equal.
b. Steel pipe (insulated): Superstrut No. C-708-U, Powerstrut PS 3126, KinLine No. 477, or equal, with insulation shield. c. Copper pipe (uninsulated): Superstrut No. C-708-U, Powerstrut PS 3126, Kin-Line No. 477, or equal, with insulation shield or lined with dielectric material.
d. Copper pipe (insulated): Superstrut No. C-708-U, Powerstrut PS 3126, Kin-Line No. 477, or equal, with insulation shield.
e. Plastic pipe: Superstrut No. C-708-U, Powerstrut PS 3126, Kin-Line No. 477, or equal.

C. Rack and Trapeze Supports

1. General
a. Unless otherwise specified, provide trapeze and pipe rack components minimum thickness of 12 gage, with a maximum deflection 1/240 of the span.

2. Type 20 – Trapeze Pipe Support
a. For trapeze pipe support cross members, use framing channel as specified in Paragraph 2.02 E.5. For flat plate fittings, 1-5/8” square standard design manufactured by framing channel manufacturer, Unistrut P2471, B-Line B202-2, or equal.

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3. Type 21 – Pipe Rack Support
a. For post and cross members, use framing channel as specified in Paragraph 2.02 E.5. For pipe rack fittings, use standard design manufactured by framing channel manufacturer. For 90º fittings, use gusseted Unistrut P2484, B-Line B844, or equal. Provide post base fittings as specified in Paragraph 2.02 D.5.

D. Structural Attachments

1. Type A –Insert for Concrete:
a. Concrete inserts: Comply with MSS and FEDSPEC Type 18. b. Anvil International 282, Carpenter & Paterson Fig. 108, or equal.

2. Type B – Side Beam Bracket
a. Comply with MSS Type 34 and FEDSPEC Type 35.
b. Anvil International. 202, B-Line B3062, or equal.

3. Type C –Beam Clamp with Extension Piece
a. Comply with MSS and FEDSPEC Type 30.
b. Anvil International. 218 with Fig. 157 extension piece, B-Line B3054, or equal.

4. Type D – Beam Clamp with Eye Nut
a. Beam clamp and eye nut: forged stainless steel.
b. For configuration and components, comply with MSS and FEDSPEC Type

28. c. Anvil International. 292, Carpenter & Paterson Fig. 297, or equal.

5. Type E – Framing Channel Post Base
a. Standard design offered by framing channel manufacturer. b. Single channel: Unistrut P2072A, B-Line B280, or equal. c. Double channel: Unistrut P2073A, B-Line B281, or equal.

6. Type F – Welded Beam Attachment
a. Comply with MSS and FEDSPEC Type 22. B-Line B3083, Anvil International. 66, or equal.

7. Type G – Welded Steel Bracket
a. Comply with MSS Type 32 and FEDSPEC Type 33 for medium welded bracket.
b. Comply with MSS Type 33 and FEDSPEC Type 34 for heavy welded bracket.

8. Type H –Bracket
a. Carpenter & Paterson Fig. 340, or equal.

9. Type J – Adjustable Beam Attachment
a. Carpenter & Paterson Fig. 151, B-Line B3082, or equal.

10. Type K – Double Channel Bracket
a. Wall channel: single channel framing channel as specified in Paragraph

2.02 E.5.
b. Cantilever bracket: double framing channel assembly, Unistrut P2542 through P2546, B-Line B297-12 through B297-36, or equal.

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11. Type L – Single Channel Bracket
a. Wall channel: single channel framing channel as specified in Paragraph

2.02 E.5.
b. Cantilever bracket: a single framing channel assembly, Unistrut P2231 through P2234, B-Line B198-6, B198-12, B196-18 and B196-24, or equal.

12. Type M – Wall Mounted Channel
a. Wall channel: single channel framing channel as specified in Paragraph

2.02 E.5.

13. Type N – Pipe Stanchion Floor Attachment
a. Base plate: 1/2” minimum thickness.
b. Make anchor bolt holes 1/16” larger than the anchor bolt diameter. c. Fill space between the base plate and the floor with nonshrink grout.

E. Accessories

1. Hanger Rods
a. Rods: threaded on both ends or continuous threaded and sized as specified.

2. Weldless Eye Nut
a. Eye nut: forged stainless steel and complying with MSS and FEDSPEC Type 17.
b. Manufacturer: Anvil International. 290, B-Line B3200, or equal.

3. Welded Eye Rod
a. Weld-eye rod closed. Make inside diameter of eye a bolt diameter 1/8” larger than the rod diameter.
b. Manufacturer: Anvil International. 278, B-Line B3211, or equal.

4. Turnbuckle
a. Turnbuckle: forged stainless steel and complying with MSS and FEDSPEC Type 13.
b. Manufacturer: Anvil International. 230, B-Line B3202, or equal.

5. Framing Channel
a. Framing channel: 1-5/8” square, roll formed, 12-gage. b. Provide channel with a continuous slot along one side with in-turned clamping ridges.
c. Single channel: Unistrut P1000, B-Line B22, or equal. d. Double channel: Unistrut P1001, B-Line B22A, or equal. e. Triple channel: Unistrut P1004A, B-Line B22X, or equal.

2.03 THERMAL PIPE HANGER SHIELD
A. Provide thermal shields at hanger, support, and guide locations on pipe requiring insulation.

B. The shield shall consist of an insulation layer encircling the entire circumference of the pipe and a steel jacket encircling the insulation layer.

C. Make the thermal shield the same thickness as the piping system insulation specified in Section 15250.

D. Use the standard shield for hot systems and the vapor barrier shield for cold systems.

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E. Use stainless steel band clamps where specified to ensure against slippage between the pipe wall and the thermal shield.

F. Standard Shield

1. Insulation
a. Hydrous calcium silicate, high density, waterproof.
b. Compressive strength: 100 psi average.
c. Flexural strength: 75 psi average.
d. K factor: 0.38 at 100ºF mean.
e. Temperature range: 20ºF to 500ºF.

2. Steel Jacket
a. Stainless steel. Manufacturer’s standard gauge supplied for the given pipe size.

3. Connection
a. Butt connect to pipe insulation. Install with steel jacket and insulation flush with end.

G. Vapor Barrier Shield:

1. Insulation
a. Hydrous calcium silicate, high density, waterproof.
b. Compressive strength: 100 psi average.
c. Flexural strength: 75 psi average.
d. K factor: 0.38 at 100ºF mean.
e. Temperature range: 20ºF to 500ºF.

2. Steel Jacket
a. Stainless steel. Manufacturer’s standard gauge supplied for the given pipe size.

3. Connection
a. Butt connect shield to pipe insulation.
b. Extend insulation 1” each side of steel jacket for vaportight connection to pipe insulation vapor barrier.

EXECUTION

3.01 HANGER AND SUPPORT LOCATIONS
A. Locate hangers and supports as near as possible to concentrated loads such as valves, flanges, etc.

B. Locate hangers, supports and accessories within the maximum span lengths specified in the contract documents to support continuous pipeline runs unaffected by concentrated loads. Indicate hanger and support locations and components on the piping layout drawings required by Paragraph 1.05. For pipe support submittals, provide a complete cross reference of each support by mark number, including the page number on which each mark number can be found. Set up the cross reference to permit review from the mark numbers to the drawings, not the other way around.

C. Locate at least one hanger or support within 2’ from a pipe change in direction.

D. Locate hangers and supports to ensure that connections to equipment, tanks, etc., are substantially free from loads transmitted by the piping.

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E. Where piping is connected to equipment, a valve, piping assembly, etc., that will require removal for maintenance, support piping so temporary supports are not necessary.

F. Locate pipe supports to prevent "pockets" from forming in pipe between supports due to excessive deflection under load from weight of pipe, medium in the pipe, insulation, valves and fittings.

3.02 INSTALLATION
A. Construct welded and bolted attachments to the building structural steel which comply with the AISC Manual of Steel Construction. Unless otherwise specified, do not drill or burn holes in the building structural steel.

B. Do not use hanger components for purposes other than for which they were designed. Do not use components for rigging and erection purposes.

C. Install items to be embedded before concrete is poured. Fasten embedded items securely to prevent movement when concrete is poured.

D. Use embedded anchor bolts that satisfy the 2010 CBC provisions instead of concrete inserts for supports in areas below water surface or normally subject to submergence.

E. Install thermal pipe hanger shields on insulated piping at required locations during hanger and support installation. Make butt joint connections to pipe insulation at the time of insulation installation per manufacturer’s recommendations.

F. When hanger and support components are in contact with plastic pipe, make sure the components are free of burrs and sharp edges.

G. Ensure rollers roll freely without binding.

H. Roughen finished floor to a 1/4 inch amplitude beneath structural attachments and framing channel post bases prior to grouting. Place grout, free of voids and foreign material, between base plate and floor.

I. Cut and drill base plates to specified dimensions prior to welding stanchions or other attachments and prior to setting anchor bolts.

J. Provide plastic or rubber end caps at the exposed ends of all framing channels that are located up to 7’ above the floor.

3.03 ADJUSTMENTS
A. Adjust hangers and supports to obtain required pipe slope and elevation.

B. Use shims made of material that is compatible with the piping material.

C. Adjust stanchions prior to grouting their base plates.

END OF SECTION

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SECTION 15076

PIPING AND VALVE IDENTIFICATION SYSTEMS
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Identification systems for buried and exposed piping and valves.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittals

2. Section 09960 – High Performance Coatings

3. Section 15050 – Piping Systems

1.03 SUBMITTALS
A. Comply with Section 01330.

B. Include the following items:

1. Manufacturer’s catalog information demonstrating compliance with the materials requirements of this Section.

2. Samples of the materials to be used for piping and valve identification.

3. A schedule of piping services and description of identification systems.

PART 2 - PRODUCTS

2.01 PIPE CODING MARKERS
A. Manufacturers

1. One of the following or equal:
a. Brady Company.
b. Seton Name Plate Corporation.
c. Industrial Safety Supply Corporation.

B. Comply with ANSI A13.1.

C. Type

1. Mechanically attached type that is easily removable.

2. Do not use adhesive applied type.

3. Pressure sensitive legends applied to plastic backing which is strapped or otherwise mechanically attached to the pipe.

D. Legend and Backing

1. Resistant to petroleum based oils and grease.

2. Meet criteria for humidity, solar radiation, rain, salt, fog and leakage fungus, as specified by MIL-STD-810C.

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E. Withstand a continuous operating temperature range of -40ºF to 180ºF.

F. Manufactured and applied in one continuous length of plastic. Do not provide individual letter type.

G. Provide in the following letter heights: For markers bearing the legends on the background colors specified in Section 15050 (PIPESPEC).

Outside pipe diameter,(a) inches Letter height, inches
Less than 1-1/2 1/2
1-1/2 through 3 1 1/8
Greater than 3 2-1/4
(a) Outside pipe diameter shall include insulation and jacketing.

H. Include uni- and bi-directional arrows in the same sizes as the legend. Provide legends and arrows in white on blue or red backgrounds, and black on other specified backgrounds.

2.02 PLASTIC TRACER TAPE
A. Manufacturers

1. One of the following or equal:
a. Brady Company.
b. Seton Name Plate Corporation.
c. Industrial Safety Supply Corporation.

B. 6” wide, colored the same as the background colors as specified in Section 15050.

C. Material: inert plastic material suitable for direct burial.

D. Capable of stretching to twice its original length.

E. Print two messages on the tape, both messages at maximum intervals of 2 feet.

1. First message: “CAUTION CAUTION CAUTION PIPE BURIED BELOW” with bold letters approximately 2” high.

2. Second message:
a. The blank in the first message shall contain the words “NON-POTABLE WATER” when used for W2 and IRR piping.
b. The blank in the first message shall contain the words “RECLAIMED WASTEWATER” when used for W3 piping.
c. The blank in the first message shall contain the words “STORM DRAIN” when used for SD piping.
d. The blank in the first message shall contain the word “SEWER” for all other piping systems.

2.03 MAGNETIC TRACER TAPE
A. Manufacturers

1. One of the following or equal:
a. Brady Co.
b. Seton Name Plate Corporation

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c. Industrial Safety Supply Corporation.

B. Material

1. Acid and alkali-resistant polyethylene.

2. 3” wide.

3. 0.005” thick.

4. 1,500 psi strength and 140% elongation value.

C. Color the same as the background colors as specified in Section 15050 and inscribe with the words “CAUTION—PIPE BURIED BELOW”.

2.04 VALVE IDENTIFICATION
A. Fabricate of stainless steel and inscribed with the specified valve number stamped in 1/4” high letters.

B. The label shall be of 1/16-inch thick stainless steel with a minimum size of 2 inches.

C. See Drawings for valve designation system.

PART 3 - EXECUTION

3.01 PIPING IDENTIFICATION
A. Pipe Coding

1. After application of the specified coating and insulation systems to new or existing piping, as specified in Section 09960, identify exposed piping, interior and exterior, and piping in ceiling spaces, pipe trenches, pipe chases and valve boxes identified with plastic markers.

2. Locate legend markers and directional arrows at each side of walls, floors and ceilings, at one side of each piece of equipment, at piping intersections, and at approximately 50’ centers.

B. Plastic Tracer Tape

1. Provide a single line of plastic tracer tape as specified in this Section, 2.5 feet above the centerline of each buried pipe.

2. Spread tape flat with message side up before backfilling.

C. Polyethylene Magnetic Tracer Tape

1. Install 12-18” below ground and parallel to all buried pipes.

3.02 VALVE IDENTIFICATION
A. Label all valves designated with a valve number where valve numbers are indicated on the Drawings.

B. Each label shall be permanently attached to the valve using stainless steel screws, stainless steel wire and connectors, or another method subject to approval.

C. Install tags on valve flanges in a position visible from floor level.

D. For flangeless valves 8” in diameter and larger, attach tags to the valve body by self-tapping corrosion resistant metal screws.

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E. For flangeless valves 6” in diameter and smaller, attach tags to the valve stem by stainless steel wire. Use 0.063” wire minimum.

END OF SECTION

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SECTION 15095

PIPING APPURTENANCES
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Level gauges and pressure gauges.

B. Exclusions

1. Temperature, pressure, and flow measuring devices used for instrumentation are specified in Division 16.

1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section

1. Section 01330 – Submittals

1.03 SUBMITTALS
A. Comply with Section 01330.

PART 2 - PRODUCTS

2.01 PRESSURE DEVICES
A. Analog dial-type pressure gauges and accessories to be furnished and installed at the locations indicated on the drawings and in the Gauge Schedule included herein.

B. Provide in accordance with the schedule, whether or not indicated in the drawings.

C. Gauges to be furnished by an equipment supplier, either with an item of equipment or as a component of an equipment package, are covered in the applicable equipment section.

D. Gauge piping and fittings:

1. Tubing
a. Material:
1) ASTM A269, Grade TP 316, annealed, max hardness Rockwell B80
b. Min wall thickness:

Tube OD, inches Wall Thickness, inches
1/4 - 3/8 0.065
1/2 - 7/8 0.083
1 - 2 0.109

2. Fittings
a. Compression type
b. Material:
1) AISI Type 316 stainless steel.

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c. Manufacturers:
1) Crawford “Swagelok”,
2) Parker Hannifin “CPI”, “Ferulok”,
3) or equal.

E. Pressure Gauges

1. Provide where shown on the Drawings and as specified. Contractor shall be responsible for all gauges shown on the drawings, even if a gauge is not scheduled herein.

2. Select so that the normal operating pressure falls between 50 and 80% of full scale.

3. Components
a. Face: 4-inch with white background and black markings, 270º movement, indicate units of measurement.
b. Accuracy: 1.0% accuracy, full scale.
c. Bottom stem mounting.
d. Type 316 stainless steel bourdon tube.
e. Case
1) 300 series stainless steel case, shatterproof glass, and a 1/2” NPT bottom connection.
2) For gauges installed outdoors, provide weather-proofed cases.

4. For air, gas, and low pressure services (0–10’), provide premium grade, heavyduty bourdon-tube units (bellow type for vacuum) with Delrin bushings and pinion, and stainless steel sector.

5. For liquid service, comply with above, except provide with an internal pulsation dampening system consisting of either a glycerin fill or a silicone fluid fill. Do not use snubbers or orifices.

6. Manufacturers, one of the following or equal:
a. Ashcroft Duragauge Fig. 1009.
b. Ametek 1535.

F. Gauge Accessories:

1. Isolating Valves
a. Provide each gauge with an isolating, threaded-end eccentric plug valve.

Furnish valve with Type 316 stainless steel body, plug, bearings and stem.

Packing: Buna-N or PTFE. Manufacturers: Dezurik Model PEC, Clow or equal.

2. Gauge Isolators
a. Provide a suitable isolator shall be provided for each gauge, as indicated in the Gauge Schedule included herein, and for all gauges located on chemical lines and all gauges located on wastewater or other solids bearing liquids.
b. Unless otherwise specified, provide a diaphragm seal (DS). 1) Type: Thread-attached type with removable AISI Type 316 stainless steel diaphragm, zinc or cadmium plated carbon steel upper housing, and bronze lower housing.
2) Upper housing: Contour to fit. Provide a seat and seal for the diaphragm. Design to permit removal of the gauge with the system under pressure.