15400 Plumbing Systems15400
Plumbing Systems
PART 1 - GENERAL
SUBMITTALS
Within fifteen (15) days after signing a contract or receiving a letter of intent to sign a contract, submit for review the required copies of a complete list of materials proposed for
use including sizes, capacities, etc. See drawings and general provisions for requirements. Such list shall include:
Plumbing fixtures and trim.
Drains, cleanouts, and hydrants.
Water heaters.
Backflow preventer
No substitute materials may be installed without the written approval of the Owner.
All additional costs incurred by the substitution of materials or equipment, or installation thereof, whether Architectural, Structural, Mechanical, Electrical or Plumbing, shall be
borne as part of the expense incurred under this section.
Comply with Section 01330.
PIPING - GENERAL
Thoroughly clean all pipe and maintain in clean condition during construction temporarily capping or plugging ends of pipe when not being utilized.
Cut pipes accurately to measurements established at the site and work into place, without springing or undue forcing, and out of the way of openings, ductwork and equipment. Ream ends
of screwed pipes and tubing to original bore before making connections.
Run piping concealed except as noted otherwise, with vertical lines plumb and horizontal lines to maintain uniform slope.
Protect against condensation all piping located over switchboards, electrical machinery or equipment.
Arrange water piping for draining at low points. Place drain valves to be accessible.
Isolate all water lines from hangers and clamps with Stoneman Trisolator fittings and from structural members with 1/4 inch thick felt pads.
Make up screw joints with approved pipe joint compound, applied to male threads only. Solder joints in copper tubing with 95-5 soft solder and flux. All joints shall be cleaned bright
before soldering.
Where changes in pipe sizes occur, use only reduced fittings. For drainage pipe changes in direction, use long sweep bends where possible. Otherwise, use short sweep 1/4 bends or combination
Y and 1/8 bends. Use sanitary-T branches only for horizontal branches discharging to stacks.
Unions: provide screwed unions of flanges in locations required for the disconnecting and connecting of all equipment, traps, bypasses, and fixture traps.
Flash roof vent piping through roof with 20 gauge or heavier FHA galvanized flashings or two and one-half pounds per square foot or heavier leads flashings; make watertight with blank
fibrous mastic. Extend flashing into roofing felt 12 inches from pipes.
Chase or sleeve all lines rising in footings and where running concealed through walls.
Caulk space between pipes and sleeves in exterior walls and in concrete slabs with graphite packing and a waterproof plastic compound. Caulk fire walls with appropriate material per
manufacturer’s recommendations.
Place escutcheons, stamped from #16 gauge steel and chrome plated, on pipes passing through sleeves in walls, floors, or ceilings where exposed to view within a finished area. Grout
in all other lines.
Support piping where necessary at sufficiently close intervals to keep it in alignment and to prevent sagging.
All exposed pipe and trim at fixtures shall be chrome plated.
Anchor vertical risers with hooks, brackets or clamps to make rigid.
Air piping shall be Schedule 40 black steel with malleable iron fittings. Below grade pipe shall be protected with Skotchkote wrap.
PART 2 - PRODUCTS
SOIL, WASTE, DRAIN, AND VENTING SYSTEMS
Soil, waste, storm, drain and vent pipe shall be ABS equal to ASTM D2751.
Exception: All waste piping from fixtures connected to Oil/Water Separator, or trap, waste and vent piping not allowed for ABS use.
B. PVC Schedule 40 Solid Wall Pipe and DWV Fitting System: Pipe and fittings shall be manufactured from PVC compound with a cell class of 12454 per ASTM D 1784 and conform with National
Sanitation Foundation (NSF) standard 14. Pipe shall be iron pipe size (IPS) conforming to ASTM D 1785 and ASTM D 2665. Fittings shall conform to ASTM D 2665. Solvent cements shall
conform to ASTM D 2564. Primer shall conform to ASTM F 656.
WATER PIPING SYSTEM
Piping shall be hard copper water tube, conforming to ASTM B88 - Type “K” with wrought copper fittings.
All valves shall be the product of a single manufacturer; Nibco, or approved alternate Walworth, Jenkins, Kennedy or Crane, 125 psi steam-service rated.
Ball Valves shall be, Fig. 3500. 125 spi, bronze body, full port.
Globe valves shall be screwed union bonnet bronze valve.
Check valves shall be screwed, bronze, swing check.
Unions: Mueller #C-107, in copper piping, Stockham Fib. 694 galvanized malleable iron, brass seat, in steel lines; Epco dielectric unions where copper connects to steel.
Insulate all domestic hot water piping with Imcoa flexible unicellular polyolefin foam, 1-inch nominal thickness, K=0.24 at 75 degrees F. mean temperature, fuse seal joints and seams
per manufacturer’s recommendations.
All pipe insulation shall be in conformance with Table 14-6 in latest edition of WSEC.
GAS PIPING SYSTEM
Piping above ground: Standard weight blank iron pipe Schedule 40, A-120, with 150# black malleable iron fittings.
Piping underground: Same as above, dipped wrapped and installed in strict accordance with utility company’s specifications for their service lines. Wrap shall extend a minimum of 6
inches above grade on riser.
Gas cocks shall be Nibco T580 ball valve. Unions shall be 150# malleable iron with ground joint.
PIPE HANGERS AND SUPPORTS
Pipe hangers and supports shall be per the Uniform Plumbing Code.
Plumbers tape or sheet metal straps shall not be used for hanging or supporting of pipes.
Space hangers and supports for horizontal copper and steel pipe according to the following schedule.
Pipe Size
Maximum Spacing in Feet
3/4" and 1"
6
1-1/4"
7
1-1/2"
8
2"
9
2-1/2" and 3"
10
4"
12
PLUMBING FIXTURES
Water Closet:
Kohler K-3427, Vitreous china, Elongated bowl - 17" high Rim, flush tank siphon jet 1.6 gpf., w/ Centoco 1500cc open front seat. Provide trip handle of accessible side of fixture.
Lavatory:
Kohler K-2005-L, with soap dispenser hole on left, 21x18 in. Vitreous China, wall mounted, self draining deck. Provide Symmons S-20-G single handle faucet and Omni 200 0.5 gal faucet
flow control fitting. Provide insulation wrap for supplies and trap. Truebro or equal.
Wall Hydrant:
Woodford B65, freezeless, 1/4 turn operation, all metal w/ inlet elbow, removable key at exterior locations, T-Handle at interior locations.
Water Heater:
Water Heater: A.O. Smith DEL-10, (at deep sink), 10 gallon capacity, 4500 watt single phase, mount water heater @ 72" A.F.F. on shelf above sink.
Backflow Preventer:
WATTS 007, Double check w/ bronze body and caps, “Y” type check valves.
Floor Drain:
Jay R. Smith 3002-5A, and Jay R Smith 2005, Cast Iron body, bronze top. Provide trap, primer trap, and primer valve.
Drinking Fountain:
Haws HWUACO8L, Hi-Lo double electric drinking fountain, ADA complaint, 120 V Single Phase.
Manufactures and models other than those shown in the above schedule may be substituted on an “equal or better” basis from the following list. Catalog cuts of substituted products must
be submitted to the owner along with any bids. All other products not listed must be approved in writing by the owner prior to installation.
Kohler
Rheem
Bradford White
Mustee
American Standard
Watts
Woodford
Slone
Substitutions: Comply with requirements of Section 01630
MISCELLANEOUS PLUMBING FIXTURES
Floor Cleanout: Jay R. Smith 4023
Wall Cleanout: Jay R. Smith 4472
Grade Cleanout: Jay R. Smith 4880.
OIL/WATER SEPARATORS
A. Oil/Water separator with manhole extensions. Gasketed cover suitable for gas tight applications. Traffic duty iron cover. Internal air relief baffles. Extension (if required). Utility
Vault or accepted substitute.
PART 3 - EXECUTION
EXCAVATING AND BACKFILL
Verification of existing conditions: It shall be one of the responsibilities under this section to examine the site of work and, after the investigation, to determine the character of
the materials to be encountered and the existing conditions affecting the work.
Excavation shall be unclassified and shall include the removal of all buried obstructions within the area to be excavated.
Trench for underground pipe lines shall be to the required depths; maintain excavations free of water while installing pipe and until backfilled.
Tamp bottom of trenches to uniform grade, and excavate where necessary to insure that pipe rests for entire length on solid ground. Should rock be encountered, excavate to 6 inches
below bottom of pipe and rock surface with well tamped and compacted 1/2 inch to 1-1/2 inches broken stone or gravel sand before laying pipe.
When piping has been installed, tested inspected, and approved, backfill excavations with clean earth from excavation, or with imported sandy soil, in layers not exceeding 8 inches;
moisten and machine tamp, and restore the ground or paving to original condition.
Backfill shall be compacted to a density of 95 percent as determined by the Laboratory Test Procedure in ASTM D1557.
After backfilling, remove from the premises all surplus earth resulting from this work and dispose of same as directed by the Owner.
SOIL, WASTE, DRAIN AND VENTING
Install pipe in accordance with IAPMO Standard IS 11-81 for ABS sewer pipe and fittings.
Run piping in the approximate location shown on the drawings, graded 1/4 inch per foot in buildings.
Keep stopper in mouth of pipe when pipe laying is not in progress.
Install traps and fresh air inlets where required by code regulations.
Extend vents through roof. Vents may be combined in accordance with the Uniform Plumbing Code.
Install cleanouts at ends of horizontal runs in excess of 5 feet and every 100 feet of horizontal runs.
Make up cleanout plugs with graphite and oil to facilitate easy removal.
Deliver to Owner, at completion of work, two (2) suitable wrenches for each type of cleanout installed.
Take necessary precautions to protect cleanouts during course of construction.
All drains shall be properly trapped and vented, and supplied with water where required by Code authorities. Give special care to drains located in areas that are pitched for drainage
so that uniform slope will be obtained.
WATER PIPING SYSTEM
Extend piping for hot and cold water including mains, risers, and supplies to fixtures and indicated equipment.
Pitch piping as required for drainage.
Make changes in pipe sizes with reducing tees or reducer fittings. Use of bushing or street elbows not permitted.
Install unions on each branch line, adjacent to each screwed valve, on all lines connecting to equipment, and where otherwise indicated.
No water piping shall be permitted below slab-on grade except main supply.
GAS PIPING SYSTEM
Make necessary connections to supply service to equipment as shown. Make installation in accordance with requirements of governing codes and the Nation Board of Fire Underwriters.
Ensure that all fittings are tight after piping system is purged.
TESTING, ADJUSTING, AND CLEANING
Test all piping, valves, cleanouts, etc., as listed below and provide the Owner with certified copies of test results. The inspection authority having jurisdiction and the Owner’s Representative
shall be notified at least 24 hours prior to performance of all tests so that they may be witnessed.
All water piping shall be tested to 100 psi with potable water and held for 8 hours without drop in pressure before it is covered and concealed. Equipment and personnel shall be protected
from this test pressure.
All parts of the soil, waste, and drainage system shall be tested hydraulically by filling to the highest vent point with water. Piping may be tested in sections but shall be subjected
to a head not less than 10 feet. Stand-pipe installed for head test shall be 2-inch minimum. Test pressure shall be held for 15 minutes before inspection starts and water level shall
remain stationary for not less than one (1) hour.
All gas piping shall be tested at 50 psig for eight (8) hours without drop in pressure. Equipment and personnel shall be protected from this test pressure.
Adjust and regulate all faucets, valves, water heating equipment, etc., and turn over to the Owner in perfect working order.
Floor drain strainers and cleanout covers shall be freed, cleaned, and polished.
Upon completion of the work, clean all equipment and piping installed under this section, and thoroughly wash and polish all plumbing fixtures, fittings and trim, removing labels therefrom.
STERILIZATION
Before being placed in service, all domestic water distribution systems including those for cold water, drinking water and the hot water system, shall be sterilized in accordance with
the AWWA Standard Specification, latest edition and amendments. After sterilization, the system shall be flushed with potable water until the sterilization residue is within the tolerable
limits for domestic water.
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