CAST-IN-PLACE CONCRETE
not have a drop off of more than 4" without either a 6" curb or guardrail along the edge of the slab wherever such drop off occurs. All "plaza" and "landing" areas within the walkway system shall not exceed 2% slope in any direction. All exterior slabs shall be sloped sufficiently to ensure positive drainage without birdbaths. The existence of birdbaths will be deemed sufficient cause for rejection of the concrete as defective work which shall be removed and replaced with proper work, all at no additional cost to the City.
B. Stair, Ramps and Landings:All stair treads, ramps and landings shall be rendered non-slip by applying non- slip grooves, before the final trowel operations. On stair treads, apply non-slip material to the groove area after the concrete has cured.
3.07 CURING CONCRETE:
A. General: All concrete surfaces shall be kept continuously wet for a period of not less than 36 hours by ponding, soaking or spraying. Following this 36 hour period, the concrete shall be protected from loss of moisture for a minimum period of 10 days by the following means:
1. Water curing consisting of ponding, soaking, or spraying;
2. Covering with Kraft paper or plastic sheets;
3. Leaving Forms in place; and/or
4. Application of an approved liquid curing compound.
B. Compatibility: In the event the curing compound used is not compatible with the finish materials to be applied to the concrete surfaces, Contractor shall neutralize the curing compound before applying the finish materials.
C. Weather Protection:
1. Low Temperatures:Concrete shall be protected from low temperatures at all times in accordance with the "Recommended Practice for Winter Concrete", as published by the American Concrete Institute (ACI-604).
2. High Temperatures:Concrete shall be protected from high temperatures at all times in accordance with the"Recommended Practice for Summer Concrete", as published by the American Concrete Institute (ACI-605).
3.09 PATCHING AND FINISHING: Concrete surfaces that are exposed to view shall be smooth and free from form marks. Wet and rub with a carborundum brick, or other abrasive block, until a uniform, fine-textured surface appearance is obtained. Use cement mortar paste in rubbing and remove excess material by brushing and washing.Smooth trowel and burnish weathering surfaces and leave external angles neatly rounded with an edging tool. Finished Work showing voids and separation of aggregates will not be accepted. After forms are removed and form ties withdrawn,all projections and fins shall be cut away from exposed surfaces and all honeycombs and porous surfaces shall be cut back to solid concrete. The defective surfaces shall then be repaired by the use of grout and finished to match the adjacent surfaces.
3.10 GROUT AND DRY PACK:Areas to receive dry pack shall be wetted down just before tamping dry pack. Dry pack shall be sprinkled with water the same day it is applied and shall be kept moist for a period of 3 days for proper curing.
3.11 FAULTY AND DEFECTIVE WORK:
A. Removal of Defective Concrete: Concrete not conforming to the design,or which has voids,honeycombs,or other defects, or which has been repaired other than under the direction of the Architect or the Architects representative, shall be deemed to be defective and shall be removed and replaced with acceptable Work.
All concrete rubble resulting from such removal work shall be disposed of legally off the site.
B. Graffiti: Graffitied concrete surfaces will not be accepted. Contractor shall provide watchmen as required to insure a graffiti-free surface. Patching of concrete surfaces will not be permitted. Whole sections must be removed and replaced
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CAST-IN-PLACE CONCRETE
3.12 CLEAN UP: During construction, keep the area clean and clear. Concrete spoils shall not be buried in backfills or left on the site. On a daily basis and upon completion of the Work of this Section, remove all trash,debris,excess materials and equipment from the Work Site. Dispose of all such trash, debris and excess materials off site in a legal manner.
END OF SECTION
SECTION 03300
CAST-IN-PLACE CONCRETE
SECTION 04810
UNIT MASONRY ASSEMBLIES
PART 1 -GENERAL
1.1 STANDARD SPECIFICATIONS: The provisions of the "Standard Specifications for Public Works Construction" shall apply except as modified herein.
1.2 SUBMITTALS
A. Product Data: For each type of product indicated.
1.3 PROJECT CONDITIONS
A. Cold-Weather Requirements: Do not use frozen materials or materials mixed or coated with ice or frost. Do not build on frozen substrates. Remove and replace unit masonry damaged by frost or by freezing conditions. Comply with cold-weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.
B. Hot-Weather Requirements: Comply with hot-weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection:
1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, products specified.
2. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to Orco Block, Angelus Block, or equal.
2.2 CONCRETE MASONRY UNITS (CMUs)
A. Shapes: Provide special shapes for lintels, corners, jambs, sashes, movement joints, headers, bonding, and other special conditions.
B. Concrete Masonry Units: ASTM C 90.
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UNIT MASONRY ASSEMBLIES
1. Unit Compressive Strength: Provide units with minimum average net-area compressive strength of 1900 psi.
2. Weight Classification: Normal weight.
2.3 BRICK PAVING
A. General: Brick
1. Sizes: 2-1/4" x 3-5/8" x 7-5/8" Face Brick
2. Manufacturer: Endicott.
3. As available through Thompson Building Materials or approved equal.
4. Colors: Manganese Ironspot & Medium Ironspot#46.
B. General: Pavers
1. Sizes: 2-1/4" x 4" x 8" & 2-1/4" x 8" x 8" — Invisi-lug Paver
2. Manufacturer: Endicott.
3. As available through Thompson Building Materials or approved equal.
4. Color: Coppertone.
2.4 NATURAL COBBLE VENEER AND PAVING
A. General: Natural granite stones, smooth and unbroken. Size ranges vary per plans.
1. Sizes from 4" diameter to 12" diameter.
2. As available through Southwest Boulder & Stone or approved equal.
2.5 MORTAR AND GROUT MATERIALS
A. Portland Cement: ASTM C 150, Type II, except Type III may be used for cold-weather construction.
B. Hydrated Lime: ASTM C 207, Type S.
C. Masonry Cement: ASTM C 91.
D. Aggregate for Mortar: ASTM C 144.
1. For joints less than 1/4 inch thick, use aggregate graded with 100 percent passing the No. 16 sieve.
2. Aggregate for base below pavers: 3/4" crushed aggregate & plaster sand leveling course.
E. Aggregate for Grout: ASTM C 404.
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UNIT MASONRY ASSEMBLIES
F. Cold-Weather Admixture: Nonchloride, noncorrosive, accelerating admixture complying with ASTM C 494/C 494M, Type C, and recommended by manufacturer for use in masonry mortar of composition indicated.
G. Water: Potable.
H. Filter Fabric: Mirafi 140n.
2.6 MORTAR AND GROUT MIXES
A. General: Do not use admixtures, unless otherwise indicated.
1. Do not use calcium chloride in mortar or grout.
2. Limit cementitious materials in mortar for exterior and reinforced masonry to portland cement.
3. Add cold-weather admixture (if used) at same rate for all mortar that will be exposed to view, regardless of weather conditions, to ensure that mortar color is consistent.
B. Mortar for Unit Masonry: Comply with ASTM C 270, Proportion Specification.
C. Grout for Unit Masonry: Comply with ASTM C 476.
PART 3 - EXECUTION
3.1 INSTALLATION, GENERAL
A. Use full-size units without cutting if possible. If cutting is required, cut units with motor- driven saws; provide clean, sharp, unchipped edges. Allow units to dry before laying unless wetting of units is specified. Install cut units with cut surfaces and, where possible, cut edges concealed.
B. Comply with tolerances in ACI 530.1/ASCE 6/TMS 602.
3.2 LAYING MASONRY WALLS
A. Lay out walls in advance for accurate spacing of surface bond patterns with uniform joint thicknesses and for accurate location of openings, movement-type joints, returns, and offsets. Avoid using less-than-half-size units, particularly at corners, jambs, and, where possible, at other locations.
B. Bond Pattern Masonry: Unless otherwise indicated, lay exposed masonry in running bond; do not use units with less than nominal 4-inch horizontal face dimensions at corners or jambs.
C. Built-in Work: As construction progresses, build in items specified in this and other Sections. Fill in solidly with masonry around built-in items.
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UNIT MASONRY ASSEMBLIES
D. Fill space between steel frames and masonry solidly with mortar, unless otherwise indicated.
E. Fill cores in hollow concrete masonry units with grout 24 inches under bearing plates, beams, lintels, posts, and similar items, unless otherwise indicated.
3.3 MORTAR BEDDING AND JOINTING
A. Lay hollow concrete masonry units as follows:
1. With webs fully bedded in mortar in grouted masonry, including starting course on footings.
B. Tool exposed joints slightly concave when thumbprint hard, using a jointer larger than joint thickness, unless otherwise indicated.
3.4 ROCK COBBLE PAVING
A. Lay rock cobble paving as detailed on plans and as follows:
1. After pouring 3" minimum thick concrete base, set cobbles into wet concrete, placing flattest side up, flush with adjacent paving or headers, keeping joints between stones 1" maximum.
2. Grout spaces between cobble stones holding top of grout 2" below top of stones.
3.5 ROCK COBBLE VENEER
A. Lay rock cobble veneer over CMU columns as detailed on plans and as follows:
1. After completing the masonry CMU column, lay rock cobble veneer staring at the bottom with larger pieces and gradually decreasing size as you build to the top.
Use string lines at corners to achieve the correct batter. Install masonry clips into CMU units to help secure stone veneer.
2. Grout spaces between cobble stones, 1" maximum, and strike back to reveal more of the stone.
3.6 AGGREGATE SETTING-BED APPLICATIONS
A. Compact soil subgrade uniformly to at least 95 percent of ASTM D698 laboratory density.
B. Place aggregate base, compact to 95 percent of ASTM D1557 maximum laboratory density, and screed to depth indicated.
C. Place drainage geotextile over compacted base course, overlapping ends and edges at least 12 inches.
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UNIT MASONRY ASSEMBLIES
D. Place sand leveling course and screed to a thickness of 1 inch taking care that moisture content remains constant, and density is loose and uniform until pavers are set and compacted.
E. Treat leveling course with herbicide to inhibit growth of grass and weeds.
F. Set pavers with a minimum joint width of 1/16 inch and a maximum of 1/8 inch being careful not to disturb leveling base. If pavers have spacer bars, place pavers hand tight against spacer bars. Use string lines to keep straight lines. Fill gaps between units that exceed 3/8 inch with pieces cut to fit from full-size unit pavers.
G. Vibrate pavers into leveling course with a low-amplitude plate vibrator capable of a 3500- to 5000-lbf compaction force at 80 to 90 Hz. Use vibrator with neoprene mat on face of plate or other means as needed to prevent cracking and chipping of pavers.
Perform at least three passes across paving with vibrator.
H. Spread dry sand and fill joints immediately after vibrating pavers into leveling course.
Vibrate pavers and add sand until joints are completely filled, then remove excess sand. Leave a slight surplus of sand on the surface for joint filling.
I. Do not allow traffic on installed pavers until sand has been vibrated into joints.
J. Repeat joint-filling process 30 days later.
3.7 MORTAR SETTING-BED APPLICATIONS
A. Saturate concrete subbase with clean water several hours before placing setting bed.
Remove surface water about one hour before placing setting bed.
B. Apply mortar bed; spread and screed mortar bed to uniform thickness at subgrade elevations required for accurate setting of pavers to finished grades indicated.
C. Mix and place only that amount of mortar bed that can be covered with pavers before initial set. Before placing pavers, cut back, bevel edge, and remove and discard setting-bed material that has reached initial set.
D. Wet brick pavers before laying if the initial rate of absorption exceeds 30 g/30 sq. in. per minute when tested according to ASTM C67. Allow units to absorb water so they are damp but not wet at time of laying.
E. Place pavers before the initial set of cement occurs.
F. Tamp or beat pavers with a wooden block or rubber mallet to obtain full contact with setting bed and to bring finished surfaces within indicated tolerances. Set each paver in a single operation before initial set of mortar; do not return to areas already set or disturb pavers for purposes of realigning finished surfaces or adjusting joints.
G. Spaced Joint Widths: Provide 3/8-inch joint width with variations not exceeding plus or minus 1/8 inch.
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UNIT MASONRY ASSEMBLIES
H. Grouted Joints: Grout paver joints complying with ANSI A108.10.
I. Grout joints as soon as possible after initial set of setting bed.
1. Force grout into joints, taking care not to smear grout on adjoining surfaces.
2. Clean pavers as grouting progresses by dry brushing or rubbing with dry burlap to remove smears before tooling joints.
3. Tool exposed joints slightly concave when thumbprint hard, using a jointer larger than joint thickness unless otherwise indicated.
4. If tooling squeezes grout from joints, remove excess grout and smears by dry brushing or rubbing with dry burlap and tool joints again to produce a uniform appearance.
J. Cure grout by maintaining in a damp condition for seven days unless otherwise recommended by grout or liquid-latex manufacturer.
3.8 REPAIRING, POINTING, AND CLEANING
A. Remove and replace unit pavers that are loose, chipped, broken, stained, or otherwise damaged or that do not match adjoining units. Provide new units to match adjoining units and install in same manner as original units, with same joint treatment and with no evidence of replacement.
B. Pointing: During tooling of joints, enlarge voids or holes and completely fill with grout.
Point joints at sealant joints to provide a neat, uniform appearance, properly prepared for sealant application.
C. Cleaning: Remove excess grout from exposed paver surfaces; wash and scrub clean.
1. Remove temporary protective coating as recommended by coating manufacturer and as acceptable to paver and grout manufacturers.
2. Do not allow protective coating to enter floor drains. Trap, collect, and remove coating material.
3.9 MASONRY WASTE DISPOSAL
A. Remove excess clean masonry waste and other masonry waste, and legally dispose of off Owner's property.
END OF SECTION 04810
SECTION 04810
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UNIT MASONRY ASSEMBLIES
SECTION 16530
ELECTRICAL
PART 1 -GENERAL REQUIREMENTS
1.1 SCOPE OF WORK
A. The work covered by this section consists of furnishing and installing all I, materials, equipment, fixtures and performing all labor and operations for complete and operable systems.
B. Provide all new materials, unless noted otherwise, of the best quality, and in perfect condition, and materials of the same make and quality throughout the work and as hereinafter specified. Comply with the requirements of ASTM, NEMA, U.L., and NBFM for materials and equipment.
C. The intent of these specifications is to establish a standard of quality of materials installed.
Include materials as specified without exception in the Base Bid. Submit for approval any proposed substitution, complete descriptive, technical, and cost comparison data and test reports. Do not furnish or install any substitute items without written approval at the time of contract signing. Reimburse the Owner for any additional engineering charges and for any changes in the work of other trades resulting from substitutions. List proposed substitutions on the Bid Form, stating the reasons for substitution. When requested by the Architect or Electrical Engineer,samples,electrically wired at 120V.with plug,or system demonstrations of both specified and proposed items will be submitted for inspection at the Electrical Engineer's office and at a time convenient to all concerned parties.
D. Where a substitution alters the design or space requirements indicated on the plans, Contractor is responsible for all additional cost for Engineering to revise plans.
E. Verifying Drawings and Job Conditions:
1. Examine all drawings and specifications in a manner to be fully familiar of all work required.
2. Visit the site and verify existing conditions. Where existing conditions differ from drawings, make adjustments and allowances for all necessary equipment to complete all parts of the drawings and specifications.
F. Shop Drawings:
1. Submit drawings in six sets accompanied by letter of transmittal listing the number and dates of the drawings submitted.
2. Mark the drawings submitted with the name of the project,numbered consecutively, and bearing approval as evidence that the drawings have been checked. Any SECTION 16530
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drawings submitted without this approval will be returned for resubmission.
3. Submit Shop drawings on, but not limited to, the following:
a. Time Switch
b. Lighting Fixtures
c. Circuit Breakers
d. Product List
G. Drawings of Record:
Provide and keep up-to-date, a complete record set of blue line prints. Show every change from the original drawings. Keep this set of prints on the job site, and use only as a record set. Do not make changes in the layout without definite instruction in each case. Obtain a set of Contract Drawings from Architect and incorporate all changes as noted on the record set of prints. Deliver this set to the Architect upon completion and acceptance of work.
H. Accuracy of Plans and Specifications:
Plans and/or specifications showing deviation from standard practice methods or from compliance with codes, and/or any omissions, does not relieve the responsibility of furnishing, making or installing all items required by code and/or intended for the function of the system.
Permits, Fees and Insurance:
Obtain and pay for all insurance, permits, etc. necessary for this Contract.
J. Codes and Regulations:
All work performed under this Section of the Specifications complies with the rules and regulations of the Division of Industrial Safety, State of California, as set forth in the latest edition of the Electrical Safety Orders,the National Electrical Code, NFPA,and all rules and regulations of local codes having jurisdiction, including the presently adopted edition Title 21 and 24 California Administrative Code.
K. Testing and Adjustment:
Test all circuits, outlets, switches, lights, motors, circuit breakers and any other electrical equipment, upon completion of all electrical work.
L. Guarantees of Materials and Workmanship:
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ELECTRICAL
Furnish and install all materials under this Contract, new and free from all defects, and guaranteed for a period of two years from the date of acceptance of the work. Should any trouble develop during this period due to defective material or faulty workmanship,furnish all necessary labor and materials to correct the trouble without additional cost to the Contract.
Correct any defective material or inferior workmanship noticed at the time of installation immediately, to the satisfaction of the Architect.
M. Removal of Rubbish:
Remove rubbish, excess materials, tools or equipment related to this portion of the work, frequently during construction and upon completion of the work.
N. Drawings and Specifications:
1. The electrical drawings are considered as part of these specifications,and any work or materials shown on the drawings and not mentioned in the specifications,or vice versa, shall be as if specifically mentioned in both.
2. The data herein specified and shown on the drawings is as exact as could be prepared, but their extreme accuracy is not guaranteed. The drawings and specifications are for assistance and guidance. The installation is essentially as shown and specified. The exact location of the equipment, material,apparatus and devices as well as the distances and levels, are more or less governed by the physical conditions and arrangements of the building. Accept this Contract with this understanding.
3. Make minor changes, when ordered by the Architect, accommodating the installation of the work with other sections of the Contract without additional cost to the Contract.
O. Safety Conditions:
It is the Contractor's responsibility to prevent any damages to personnel and/or property resulting from contact with new or existing energized circuits, switches, circuit breakers, or other electrical apparatus. All electrical work to be constructed with electrical systems de- energized in the area of work.
P. Final Inspection and Acceptance:
After all requirements of the specifications and drawings have been fully completed, a representative of the Owner will inspect the work. Provide competent personnel to demonstrate the operation of any item or system involved to the complete satisfaction of each representative.
2. PART 2.PRODUCTS
2.1 PANELBOARDS:
SECTION 16530
ELECTRICAL
A. Provide the automatic circuit breaker type, quick-make and quick-break panelboards.
Provide wiring gutter sides, top and bottom.
B. Provide panelboards from the same manufacturers as the main switchboard;type,mounting, and size as noted on the drawings with silver-plated copper bussing.
C. Where space is called for on the panelboard schedules, provide space and mounting for future circuit breaker installation as indicated.
D. Use trims having doors equipped with flush type combination lock and catch,two milled type keys supplied with each panel, all locks are keyed alike. Provide a clear covered directory frame with a typed identification card, indicating type of circuit and location, in accordance with final circuitry and panel designation on each door. Completely fill in all panel directories, using actual connections,Owners designations or other factual information. Key all doors to Yale LL803, or as directed by Owner.
E. Where called for on the drawings, provide a separate compartment within the panelboards for contactors and/or time switches.
2.2 CIRCUIT BREAKERS:
Provide circuit breakers with inverse time characteristic thermal and magnetic tripping elements,with an interrupting capacity of not less than 10,000 amperes, UL labeled, NEMA rated, molded case type. Use common trip single handle multi-pole breakers. Handle extensions are not permitted. All circuit breakers will have covers sealed on non-interchangeable trip breakers and trip unit covers sealed in interchangeable trip breakers to prevent tampering. Be sure the circuit breaker current rating markings clearly visible after breaker is installed. One manufacturer for all circuit breakers for a given panel. Provide bolt-on circuit breakers unless specifically noted on electrical drawings.
2.3 CONDUIT AND FITTINGS:
A. Rigid Conduit (RGS): Hot dipped galvanized or sherardized steel. Republic Steel Co. or approved equal. Intermediate metal conduit may be used,where CEC allows,in lieu of RGS.
B. Electrical metallic tubing (EMT): Welded, electro-galvanized thin wall steel tubing. All couplings are gland compression type.
C. Non-metallic conduit(PVC): Polyvinyl chloride Schedule 40 or 80. Install a copper ground wire, sized per National Electrical Code, in all non-metallic conduit power raceways. Use PVC in underground installations only.
D. Liquidtight Flexible Metal Electrical Conduit: Hot-dipped galvanized steel with exterior, molded polyvinyl jacket. Use for all final connections to all vibrating equipment,transformers and the like. 18" maximum. Provide a code sized ground wire.
E. Flexible metallic steel tubing: Liquid tight without a nonmetallic jacket. Use as allowed by code and where permitted by this Specification,section 3.06.C. Provide a code sized ground conductor.
SECTION 16530
ELECTRICAL
F. Condulet Type Fittings: As manufactured by Crouse Hinds Company, Appleton Electric Company or Pyle National or approved equal, smooth inside and out, taper threaded with integral bushings.
2.4 CONDUCTORS:
A. Provide copper conductors,600 volt A.C.unless noted otherwise. Aluminum conductors are not permitted.
B. Use THWN conductors for underground and damp locations, THHN for dry areas.
C. Deliver conductors to the site in unbroken packages, marked with the manufacturer's name, date of manufacture,voltage and classification letters. Use only wire recently manufactured (10 months or less).
D. Provide signal service and low voltage control conductors as specified or noted on the drawings.
E. No conductor supplying 120 volts or more will be smaller than No. 12 AWG unless otherwise noted on the drawings.
F. Fixture wire to comply with latest requirements of the National Board of Fire Underwriters.
The carrying capacity of the wire as per the latest requirements of the National Electrical Code. No fixture wire may be smaller than#18 gauge. Protect wiring with tape or tubing at all points where abrasion is likely to occur.
G. Install all conductors of each electrical system in an approved raceway. Factory assemblies, non-metallic/pliable/corrugated raceways,type OF cable or multi-conductor assemblies are not approved.
H. Use solid conductor, size#10 AWG and smaller, stranded for#8 AWG and larger.
2.5 JUNCTION AND PULL BOXES:
Above grade level, provide galvanized junction and pull boxes with removable covers, secured with machine screws. The sizes of all boxes determined by the number and size of conductors entering the box, and by the sizes of conduit terminating in the box. All boxes conform to the applicable Electrical Safety Orders, State of California. Pullboxes flush with grade shall be concrete, with bolt down concrete or steel covers, per plans, with engraved or beadweld identification.
2.6 OUTLET BOXES:
A. Provide galvanized outlet boxes and covers, one piece pressed steel, knockout fixture out- lets equipped with 3/8"fixture studs and plaster rings.
B. Where standard boxes are not suitable, provide boxes of special design to fit space.
SECTION 16530
ELECTRICAL
C. Cast aluminum or cast iron for outlet boxes exposed to weather, in damp locations, or surface mounted with threaded hubs for conduit connections; cover made watertight with gasket and non-ferrous screws.
D. Provide outlet boxes in plaster covered walls with raised covers or plaster rings to finish flush with plaster.
2.7 RELAYS:
Install control relays for automatic controls or for interlocking as indicated in the drawings. Provide relays with the number and type of poles and with operating coils as indicated. Equip relays with contacts rated not less than 15 amperes for continuous inductive load, unless otherwise shown or specified. Rate operating coils for continuous duty at the operating voltage shown on the drawings.
2.8 FUSES:
A. Provide (in a location designated by the Owner) a spare fuse cabinet with the following:
1. Nameplate "spare fuses".
2. Necessary fuse holders.
3. Spare set of each size and type of fuses.
B. Provide dual element fuses for all 600 volt or lower voltage requirements unless otherwise indicated or specified. Where fuses are not made for this application,furnish Buss"Limitron" or approved equal fuses.
C. Provide Bussman Fuses as indicated on plans.
D. Replace fuses"blown"or damaged during construction with new fuses of proper rating and type for the particular use, replace spare sets.
2.9 LIGHTING FIXTURES:
Furnish, install and connect lighting fixtures of type designed on the plans.
A. Verify all fixture locations with Landscape Architectural drawings prior to rough in.
B. Where there is conflict in fixture quantities on any of the plans the greatest amount will prevail.The description of the lighting fixture supersedes the catalog number and is to be fur- nished and installed with type to fit description.
2.10 NAMEPLATES:
Shall be micarta or lamacoid plate, 1/8" thick and have approved size, with beveled edges and engraved white letters on black background. Provide nameplates for all items of electrical equipment as well as circuits in the service distribution and power distribution panelboards; lighting distribution SECTION 16530
ELECTRICAL
panelboards; separately mounted motor starting switches; disconnect switches; motor control pushbutton stations and other similar devices. Each nameplate as approved by the Architect. Use two machine screws for attachment. Cement/adhesive is not approved.
PART 3 - EXECUTION
3.1 If construction of building reveals that any part of the Electrical Work would not be readily accessible if installed according to drawings, notify the Architect before proceeding with such installation.
3.2 All concrete work such as pull boxes, raised pads, conduit envelopes and other areas where affecting Electrical Work are the responsibility of the Electrical Contractor.
3.3 Coordinate layout and installation of electrical work with the overall construction schedule and work schedules of various trades to prevent delay in completion of the project.
A. Verify dimensions and information regarding accurate location of equipment, structural limitations, and finish with other affected sections.
B. Job Conditions:
The drawings do not always show offsets, bends, special fittings or junctions or pull boxes necessary to meet job conditions. Provide the items as required at no cost to the Owner.
C. Weatherproof Equipment:
Use weather resistant electrical devices or equipment located in damp,semi-exposed areas.
Comply with NEMA Type 3R requirements for enclosures.
D. Where devices are shown diagrammatically in the same location, neatly group them together in a reasonable manner. Provide one-piece plate where such is manufactured.
3.4 Equipment requiring electrical under other sections is part of the Contract. Work includes all necessary connections.
3.5 EXCAVATION AND BACKFILLING:
Excavate and backfill in accordance with section in other documents covering that work.
3.6 CONDUIT:
A. Install all conduit concealed, except where specifically indicated as exposed. Use rigid galvanized steel or I.M.C. for all exposed conduit. Paint with two coats to match adjacent surroundings, if viewed by the public.
B. Use galvanized rigid steel on all conduit installed in concrete and masonry walls, 3/4 inch trade size minimum, unless otherwise specified and/or noted on the plans. Verify conduit runs in concrete slab, prior to placement. Otherwise, do not run conduits in slabs.
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ELECTRICAL
C. All conduit installed in the dry walls or dry ceilings of the building structures, shall be steel tube (EMT), except that in certain locations and for certain runs where it is impractical to install EMT, and where permission to do so has been given by the Architect, galvanized flexible steel conduit may be used, with a code sized ground conductor.
D. Run conduit so as not to interfere with or contact other piping,fixtures or equipment. Main- tain 6" separation from water piping.
E. Cut the ends of all conduit square and carefully ream out to full size, and shoulder in fitting.
F. No running threads will be permitted in locations exposed to the weather, in concrete or underground. Use special watertight union fittings in these locations.
G. Use PVC Schedule 40 or 80 for all underground conduits. Install all underground conduit at a depth of not less than 24 inches below the final finish grade, unless under concrete slabs or otherwise noted and/or specified. Provide metallic high voltage tape buried 12" above conduit, except under floor slab or under concrete walk, in which case, install 6" below bottom of slab. Use IMC for all horizontal and vertical sweeps or risers with factory applied PVC coating or half lapped 10 mil. tape. Schedule 80 PVC sweeps are permitted for conduits 1 1/2" diameter and greater.
H. Cut and patch all pavements, curbs, sidewalks and gutters, whenever necessary for laying conduit, or whenever damaged by the operations of this trade. Replace materials with quality and finish equal to that removed or damaged.
Where conduit extends through roof to equipment on roof areas,provide weatherproofing as specified in the appropriate section of these Specifications.
J. Support all conduit in intervals not less than 10'-0"and within 36 inches from any outlet and at each side of bends and elbows. Use galvanized, concealed conduit supports, heavy stamped, one hole malleable conduit clamps secured with nails. On exposed conduit supports, use two hole clamps with screws,or galvanized steel framed channels secured by screws may be used for conduit supports. Perforated iron for supporting conduit is not perm- itted.
K. Use rigid galvanized steel or I.M.C., threaded, for exposed conduit runs. Install parallel or perpendicular to walls, structural members or intersection of vertical plane and ceilings.
Avoid field made bends and offsets where possible. Do not install crushed or deformed raceways.
L. Provide metal sleeves and install where conduit passes through masonry or concrete walls.
Use No. 20 gauge galvanized steel sleeves, no more than 1/2 inch greater in diameter than the outside diameter of the conduit. Caulk conduit into sleeves with stone wool, Duseal or Oakum and weatherproof below grade. Where conduit passes through fire resistive walls, partitions,and floors, pack void spaces between conduits with U.S.G.Thermafiber or equal, SECTION 16530
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as approved by the State Fire Marshal.
M. Provide a heavy nylon cord pull rope in all empty conduits for future use. Leave in place for future use in all runs and tagged with plastic tag at terminating end indicating the location of the opposite end of the conduit.
N. Use factory-manufactured ells,except where noted otherwise. Field bends are permitted for EMT conduit less than 1"diameter. Conduit radius for signal system is ten times the internal diameter of the conduit.
O. Cap or seal all conduit ends until wires are pulled.
P. Use watertight gland compression type connectors and couplings on fittings for thin wall metallic conduit. Screw type or crimp type are not permitted.
Q. Wire all rotating electrical equipment with flexible, liquid-tight conduit with appropriate slack from disconnect switch to equipment.
R. Install expansion coupling at all expansion joint locations, refer to Architectural. Drawings for locations.
S. Use approved type-bending machines for PVC conduits. Use of blow torch is prohibited.
T. For grouping, use conduit trapezes made up of suitable Unistrut or Kindorf hangers.
U. Seal or cap all conduit for a watertight installation.
V. Use approved conductor pulling machines for all underground conduits. Use of truck is prohibited.
3.7 OUTLET BOXES:
A. Attach outlet boxes on metal studs with TEC screws. Use wood screws for attachment on wood studs. Nails are not acceptable.
B. Cover all boxes with outlet box protector,Appleton SB-CK or approved equal. Keep plaster and dirt from entering box or panels. If plaster does get in, removed it prior to pulling in wires.
C. Close all unused openings with plugs.
3.8 INSTALLATION OF CONDUCTORS:
A. Unless otherwise indicated or specified, do not install conductors of less than No. 12 AWG size. For control conductors protected by 15 ampere or lower overcurrent protection, No. 14 AWG conductors will be installed. Where approved by Code, remote control and signal circuits utilize No. 18 or No. 16 AWG sizes. Increase No. 12 to No. 10 AWG for 120 volt home runs exceeding 75 feet.
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B. Color code power wire and cable for feeders and branch circuits.
C. Install all electrical conductors, including signal and communications circuits in an approved raceway.
D. Neatly group conductors in panels, switchgear and terminal cabinets, etc., and form in a manner to fan into terminals with regular spacing. Lace formed groups of conductors with No. 12 waxed twine, or Panduit Co. Nylon Straps Numbers "SST-4-H" or "SST-2". Lace larger conductors with marlin and secure with cleats, or Panduit Co. Nylon Sta-Straps Numbers "SSC-4-H" and tie anchors ETA-1, TA-2 or TM-1-2-3.
E. Install U.L.approved covered wire from all lighting fixture lamp sockets into outlet or junction box.
3.10 WIRING COLOR CODE
A. 120/240 Volt System
Phase A- Black.
Phase A Switch Leg - Black with "S"tag.
Phase B - Red.
Phase B Switch Leg - Red with "S"tag.
Travelers -Yellow.
Neutral -White.
Equipment Ground - Green.
B. Provide identification tags on each conductor entering panel, switch,junction box and pull box to identify conductor.
3.11 UNDERGROUND PULL BOXES:
A. Set underground pull boxes at+3" above highest adjacent grade level.
B. Size per NEC.
C. Provide nameplate on all covers.
"ELEC"
3.12 CONDUCTOR JOINTS AND TAPING:
Make joints in conductors smaller than No.6 AWG with solderless,tapeless,wing nut type pressure cable connector. Join conductors No. 6 AWG and larger together with approved type or pressure connector and tape to provide insulation not less than that of the conductor. Make connections to switch or bus bar with one-piece copper lugs for conductors No. 8 AWG or larger.
3.13 GROUNDING:
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Provide grounding for entire electrical installation as required by the serving utility and codes mentioned in these specifications. Including:
D. Conduit.
E. Neutral or identified conductor of interior wiring system.
F. Power and lighting panelboards.
G. Non-current carrying metal parts or fixed equipment.
H. Electrical panels in separate buildings.
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