Chrysler LLCConstruction Standards

12/17/04

SECTION 02501 - TRAILERCITY UTILITY SERVICES

This Section uses the term "Architect/Engineer." Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions.

PART 1 - GENERAL

1.1SUMMARY

  1. This Section includes utility service-distribution and specialties required to service job site office trailers with the following:
  2. Water service.
  3. Sanitary sewerage.
  4. Electrical power distribution.

1.2SUBMITTALS

  1. Product Data: For each type of product indicated.
  2. Wiring Diagrams: Power, signal, and control wiring.
  3. Operation and maintenance data.
  4. Field quality-control test reports.

1.3QUALITY ASSURANCE

  1. Water Service Standards: Comply with standards of authorities having jurisdiction for potable-water-service piping, including materials, installation, backflow prevention, testing, and disinfection.
  2. Piping materials shall bear label, stamp, or other markings of specified testing agency.

Delete paragraph below if NSF14 is not applicable.

  1. NSF Compliance: Comply with NSF14 for plastic potable-water-service piping.Include marking "NSF-pw" on piping.
  1. Electrical Standards: Comply with ANSIA10.6, NECA's "Temporary Electrical Facilities," and NFPA241.

First subparagraph below may avoid unnecessary use of high-cost labor.

  1. Trade Jurisdictions: Assigned responsibilities for installation and operation of temporary utilities are not intended to interfere with trade regulations and union jurisdictions.
  2. Electric Service: Comply with NECA, NEMA, and UL standards and regulations for temporary electric service. Install service to comply with NFPA70.
  1. Tests and Inspections: Arrange for authorities having jurisdiction to test and inspect each temporary utility before use. Obtain required certifications and permits.

1.4PROJECT CONDITIONS

Delete this Article if no existing utilities. Coordinate with requirements specified in Division1 Section "Temporary Facilities and Controls" for temporary utilities.

  1. Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated:

Edit first subparagraph below to suit Project.

  1. Notify Owner's Representative not less than business two days in advance of proposed utility interruptions.
  2. Do not proceed with utility interruptions without Owner's Representative's written permission.

1.5COORDINATION

Edit this Article to suit Project if new water-service piping will connect to other on-site water-service piping.

  1. Coordinate connection to Owner's existing utilities without metering and without payment of use charges.

PART 2 - PRODUCTS

2.1WATER SERVICE MATERIALS

  1. Piping:
  2. PVC, Schedule40 pipe, conforming to ASTMD1785 with socket fittings conforming to ASTMD2466 socket fittings; and solvent-cemented joints.
  3. Soft copper tube conforming to ASTMB88, TypeL, water tube, annealed temper.
  4. Fittings: ASMEB16.18, cast-copper-alloy or ASMEB16.22, wrought-copper, solder-joint pressure type.
  5. Valves:
  6. AWWA, Cast-Iron, Gate Valves:

Retain any of two subparagraphs and associated subparagraphs below for valve types and pressure ratings required. Show required pressure ratings of valves on Drawings if more than one pressure zone is required.

  1. Nonrising-Stem, Metal-Seated Gate Valves: AWWAC500, gray- or ductile-iron body and bonnet; with cast-iron or bronze double-disc gate, bronze gate rings, bronze stem, and stem nut.

1)Minimum Working Pressure: 200 psig.

2)End Connections: Mechanical joint.

3)Interior Coating: Complying with AWWAC550.

  1. Nonrising-Stem, Resilient-Seated Gate Valves: AWWAC509, gray- or ductile-iron body and bonnet; with bronze or gray- or ductile-iron gate, resilient seats, bronze stem, and stem nut.

1)Minimum Working Pressure: 200 psig.

2)End Connections: Mechanical joint.

3)Interior Coating: Complying with AWWAC550.

Retain UL/FM, cast-iron gate valves for use with indicator posts and OS&Y gate valves for fire-service piping in vaults if required by authorities having jurisdiction.

  1. Gate Valve Accessories And Specialties

Retain paragraph and subparagraphs below for tapping connections larger than NPS2 (DN50).

  1. Valve Boxes: Comply with AWWAM44 for cast-iron valve boxes. Include top section, adjustable extension of length required for depth of burial of valve, plug with lettering "WATER," bottom section with base of size to fit over valve, and approximately 5-inch-diameter barrel.
  2. Operating Wrenches: Steel tee-handle with one pointed end, stem of length to operate deepest buried valve, and socket matching valve operating nut.

Retain below for underground valves.

  1. Backflow-Prevention Devices
  2. General: ASSEstandard, backflow preventers.
  3. Working Pressure: 150 psig minimum, unless otherwise indicated.
  4. NPS2 and Smaller: Bronze body with threaded ends.

Units in paragraph below are for moderate to high hazard and are available in NPS1/4 to NPS3 (DN8 to DN80). They are unsuitable for continuous pressure or protection from backflow.

  1. Pipe-Applied, Atmospheric-Type Vacuum Breakers: ASSE1001, with floating disc and atmospheric vent.

Units in paragraph below are for high hazard and are available in NPS3/4 to NPS10 (DN20 to DN250).

Units in paragraph below are for low hazard and are available in NPS3/4 to NPS10 (DN20 to DN250).

Units in paragraph below are for moderate to high hazard and are available in NPS1/2 to NPS2 (DN15 to DN50).

  1. Antisiphon-Pressure-Type Vacuum Breakers: ASSE1020, suitable for continuous pressure application. Include shutoff valves, spring-loaded check valve, spring-loaded floating disc, test cocks, and atmospheric vent.
  2. Maximum Pressure Loss: 5 psi through middle 1/3 of flow range.

2.2SANITARY SEWERAGE MATERIALS

  1. PVC Sewer Pipe and Fittings, NPS15 and Smaller: ASTMD3034, SDR35, for solvent-cemented or gasketed joints.
  2. Gaskets: ASTMF477, elastomeric seals.
  3. PVC Pipe: ASTMD2665, solid-wall drain, waste, and vent.
  4. PVC Socket Fittings: ASTMD2665, socket type, made to ASTMD3311, drain, waste, and vent patterns.
  5. PVC Special Fittings: ASTMF409, drainage-pattern tube and tubular fittings with ends as required for application.

2.3PIPING ACCESSORIES

  1. Heat-Tracing Cables: Self-regulating, electric heating cables suitable for freeze protection of metal or plastic piping.
  2. Cables: Pair of parallel No.16AWG tinned-copper bus wires embedded in cross-linked conductive polymer core, which varies power output in response to temperature along its length.
  3. Cable shall be capable of crossing over itself without overheating.
  4. Heat Output: At least 90 percent of rating over a temperature range from 40 to 150 degF pipe temperature.
  5. Cable Cover: Fabricated of cross-linked, modified, polyolefin dielectric jacket; with either of the following as directed by the Owner.

1)Tinned-copper braid; and polyolefin outer jacket

2)Stainless-steel braid; and polyolefin outer jacket with ultraviolet inhibitor.

  1. Pipe Thermostat: Unit with either of the following temperature controls as directed by the Owner, snap action; open-on-rise, single-pole switch with 25-A rating; and remote bulb for directly sensing pipe-wall temperature.
  2. Preset temperature of 130 degF
  3. Adjustable temperature range from 35 to 50 degF
  1. Pipe Insulation
  2. Flexible Elastomeric Thermal Insulation: Closed-cell, sponge- or expanded-rubber materials. Comply with ASTMC534, TypeI for tubular materials and TypeII for sheet materials. Minimum thickness of 1 inch.
  3. Field-Applied Jackets: ASTMC921, Type1, unless otherwise indicated.
  4. Foil and Paper Jacket: Laminated, glass-fiber-reinforced, flame-retardant kraft paper and aluminum foil.
  5. PVC Jacket: High-impact, ultraviolet-resistant PVC; 20 mils thick; roll stock ready for shop or field cutting and forming.

2.4ELECTRICAL AND COMMUNICATIONS MATERIALS

  1. Conduit:
  2. Electrical Metallic Tubing (EMT): ANSIC80.3, zinc-coated steel, with set-screw or compression fittings.
  3. Rigid Steel Conduit (RSC): ANSIC80.1; galvanized steel.
  4. Rigid Nonmetallic Conduit (RNC): NEMATC2, Schedule40 PVC, with NEMATC3 fittings matching conduit or tubing type and material.
  5. Distribution Cabinet: Owner will furnish transformer and distribution panel for installation by Contractor. Provide appropriate slab support for transformer and stanchions for support of the distribution panel.
  6. Conductors:

Include this Article for projects if branch circuits and feeders use nonmetallic sheathed cable, armored cable, metal-clad cable, or single conductor wire in raceway. For more complex projects, or if requirements are more stringent, delete this Article and specify conductors in Division16 Section "Conductors and Cables."

  1. Conductors, No.10 AWG and Smaller: Solid or stranded copper.
  2. Conductors, Larger Than No.10AWG: Stranded copper.
  3. Insulation: Thermoplastic, rated at 75 deg C minimum.
  4. Wire Connectors and Splices: Units of size, ampacity rating, material, type, and class suitable for service indicated.
  1. Miscellaneous Electrical Materials:
  2. Provide bus plugs, fuses and related items required to complete tap to existing distribution system.

PART 3 - EXECUTION

3.1EXCAVATION AND BACKFILL

  1. Refer to Division2 Section "Earthwork" for excavating, trenching, and backfilling.

3.2WATER SERVICE

  1. Pipe Applications:
  2. Underground: PVC.
  3. Aboveground: Soft copper tube.
  4. Valve Applications: Use mechanical-joint-end valves for NPS3 and larger underground installation. Use threaded- or flanged-end valves for installation in vaults. Use UL/FM, nonrising-stem gate valves for installation with indicator posts. Use corporation valves and curb valves with ends compatible with piping, for NPS2 and smaller installation.
  5. Joint Construction: Make pipe joints according to the following:
  6. Copper Tubing Soldered Joints: ASTMB828. Use flushable flux and lead-free solder.
  7. PVC Piping Gasketed Joints: Use joining materials according to AWWAC900. Construct joints with elastomeric seals and lubricant according to ASTMD2774 or ASTMD3139 and pipe manufacturer's written instructions.
  8. Dissimilar Materials Piping Joints: Use adapters compatible with both piping materials, with OD, and with system working pressure.
  9. Water Piping Installation
  10. Water Service Connection: Arrange with Owner for tap of size and in location indicated in water main.
  11. Make connections to building water piping systems by installing tee and valves, unless otherwise indicated on the Drawings, or directed.
  12. Install copper tube and fittings according to CDA's"Copper Tube Handbook."
  13. Install PVC, pipe according to ASTMF645.
  14. Bury piping with depth of cover over top at least 30 inches, with top at least 12 inches below level of maximum frost penetration.
  15. Install underground piping with restrained joints at horizontal and vertical changes in direction. Use restrained-joint piping, thrust blocks, anchors, tie-rods and clamps, and other supports.
  16. Anchor piping penetrating building walls.
  17. Terminate piping with caps, plugs, or flanges as required for piping material.

Delete this Article if anchorages are not required.

  1. Anchorage: Install anchorages for tees, plugs and caps, bends, crosses, valves, and branches.
  2. Valve Installation: Comply with AWWAC600 and AWWAM44. Install each underground valve with stem pointing up and with valve box.
  3. Backflow-Preventer Installation
  4. Install backflow preventers of type, size, and capacity indicated. Include valves and test cocks. Install according to requirements of plumbing and health department and authorities having jurisdiction.
  5. Do not install backflow preventers with relief drain in vault or other space subject to flooding.
  6. Do not install bypass piping around backflow preventers.

Revise below to suit Project or delete.

  1. Connections

Coordinate piping installations and specialty arrangements with schematics on Drawings and with requirements specified in piping systems. If Drawings are explicit enough, these requirements may be reduced or omitted.

  1. Connect water-distribution piping to existing water main. Use method as indicated on the Drawings.
  2. Connect water-distribution piping to interior domestic-water piping.

3.3SANITARY SEWERAGE

  1. Install piping according to ASTMD2665.
  2. Install with minimum slope of 2 percent downward in direction of flow, unless otherwise indicated.
  3. Join piping according to ASTMD2665.
  4. Use transition fitting to join dissimilar piping materials.
  5. Make changes in direction using appropriate branches, bends, and long-sweep bends. Sanitary tees and short-sweep 1/4 bends may be used on vertical stacks if change in direction of flow is from horizontal to vertical. Use long-turn, double Y-branch and 1/8-bend fittings if 2 fixtures are installed back to back or side by side with common drain pipe. Straight tees, elbows, and crosses may be used on vent lines. Do not change direction of flow more than 90 degrees. Use proper size of standard increasers and reducers if pipes of different sizes are connected. Reducing size of drainage piping in direction of flow is prohibited.
  6. Install supports for piping at 48 inches maximum horizontal spacing.
  7. Protect exposed piping exposed to sunlight with two coats of water-based latex paint.

3.4ELECTRICAL

  1. Conduit:
  2. Exposed Outdoor Installations: RSC.
  3. Underground Outdoor Installations, Grouped: RNC.
  4. Underground Elbows And Vertical Stub Ups Outdoors: RSC
  5. Exposed Indoor Installations: EMT except at locations from floor slab to 10'-0" above finish slab, use RSC.
  6. Boxes and Enclosures:
  7. Outdoor Installations NEMA250, Type3R or Type4, unless otherwise indicated.
  8. Indoor Installations: NEMA250, Type1, unless otherwise indicated.
  9. Install pull wires in empty conduit. Use No.14 AWG zinc-coated steel or woven polypropylene or monofilament plastic line with not less than 200-lb tensile strength. Leave at least 12 inches of slack at each end of pull wires.
  10. Install telephone and signal system conduit, 2-inch trade size and smaller, in maximum lengths of 150 feet and with a maximum of two 90-degree bends or equivalent. Add pull boxes where necessary to accomplish this.
  11. Make splices and taps that are compatible with conductor material and that possess equivalent or better mechanical strength and insulation ratings than unspliced conductors.
  12. When possible install sleeves for conduit penetrations of masonry, concrete slabs and walls; otherwise core-drilled holes of sufficient size to minimize annular space between the conduit and penetrated wall or slab.
  13. Secure electrical items and their supports to building structure, using the following methods unless other fastening methods are indicated:
  14. Wood: Wood screws or screw-type nails.
  15. Gypsum Board: Toggle bolts. Seal around sleeves with joint compound, both sides of wall.
  16. Masonry: Toggle bolts on hollow block and expansion bolts on solid block. Seal around sleeves with mortar, both sides of wall.
  17. New Concrete: Concrete inserts with machine screws and bolts.
  18. Existing Concrete: Expansion bolts or threaded studs driven by powder charge and provided with lock washers.
  19. Structural Steel: Spring-tension clamps.
  20. Light Steel Framing: Sheet metal screws.
  21. Fasteners for Damp, Wet, or Weather-Exposed Locations: Stainless steel.
  22. Light Steel: Sheet-metal screws.
  23. Fasteners: Select so load applied to each fastener does not exceed 25 percent of its proof-test load.
  24. Identification: Comply with Owner's requirements using materials, methods names, abbreviations, colors, and other designations used for electrical identification
  25. Concrete Bases: Construct to dimensions necessary for adequate support, but not less than 4 inches larger, in both directions, than supported unit. Follow supported equipment manufacturer's anchorage recommendations and setting templates for anchor-bolt and tie locations, unless otherwise indicated.

3.5HEAT TRACING INSTALLATION

  1. Cut cable to length required.
  2. Install heater-to-cold lead connections in accessible locations.
  3. Avoid crossing expansion, construction, or control joints with heating cables. Provide sufficient slack conductor in expansion loop.
  4. Do not install heating cable mats across expansion, construction, or control joints.
  5. Connect heating cables and other components to wiring systems.
  6. Provide Set field-adjustable switches and circuit-breaker trip ranges as required.

3.6PIPE INSULATION

  1. Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will adversely affect insulation application.
  2. Apply insulation materials, accessories, and finishes according to the manufacturer's written instructions; with smooth, straight, and even surfaces; and free of voids throughout the length of ducts and fittings.
  3. Use accessories compatible with insulation materials and suitable for the service. Use accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or dry state.
  4. Seal joints and seams with vapor-retarder mastic on insulation indicated to receive a vapor retarder.
  5. Apply insulation with tight longitudinal seams and end joints. Bond seams and joints with adhesive recommended by the insulation material manufacturer.
  6. Apply insulation with the least number of joints practical.
  7. Apply insulation over fittings and specialties, with continuous thermal and vapor-retarder integrity, unless otherwise indicated.
  8. Hangers and Anchors: Where vapor retarder is indicated, seal penetrations in insulation at hangers, supports, anchors, and other projections with vapor-retarder mastic. Apply insulation continuously through hangers and around anchor attachments.
  9. Insulation Terminations: For insulation application where vapor retarders are indicated, seal ends with a compound recommended by the insulation material manufacturer to maintain vapor retarder.

3.7UNDERGROUND IDENTIFICATION

  1. Install continuous undergrounddetectable warning tape during backfilling of trench for underground piping or conduit. Locate below finished grade, directly over piping.

3.8FIELD QUALITY CONTROL

  1. Water System Testing
  2. Piping Tests: Conduct piping tests before joints are covered and after thrust blocks have hardened sufficiently. Fill pipeline 24 hours before testing and apply test pressure to stabilize system. Use only potable water.
  3. Hydrostatic Tests: Test at not less than 1-1/2 times working pressure for 2 hours.
  4. Increase pressure in 50-psig increments and inspect each joint between increments. Hold at test pressure for 1 hour; decrease to 0 psig. Slowly increase again to test pressure and hold for 1 more hour. Maximum allowable leakage is 2 quarts per hour per 100 joints. Remake leaking joints with new materials and repeat test until leakage is within allowed limits.
  5. Prepare reports of testing activities.
  6. Sanitary Piping: Test according to procedures of authorities having jurisdiction.
  7. Repair leaks and defects with new materials and retest piping, or portion thereof, until satisfactory results are obtained.
  8. Prepare reports for tests and required corrective action.
  9. Heat Tracing Testing: Perform tests after installation but before application of coverings, such as insulation, plaster, or concrete.
  10. Test cables for electrical continuity before energizing.
  11. Test cables for insulation resistance before energizing. Remove cables if measured resistance is less than 10 megohms to ground.
  12. Test cables to verify rating and power input. Energize and measure voltage and current simultaneously.
  13. Repeat tests for continuity, insulation resistance, and input power after applying thermal insulation.
  14. Repair or replace malfunctioning units. Retest as specified above after repairs or replacements are made.

3.9CLEANING