D20 Plumbing
- Piping
- Buried Piping
- All buried piping shall be bedded in a minimum of 6” of sand and have a minimum backfill of 12” of sand above top of pipe.
- Provide 18”-24” clear between pipes.
- Building Piping
- Locate main piping runs above corridors when possible.
- Provide isolation valves to shut down each floor or sections of a floor.
- Domestic Water Piping
- Non-Potable Water: Copper type ‘L’, hard drawn, with soldered points.
- Potable Water: Copper type ‘L’, hard drawn, with soldered joints.
- Sanitary Waste and Vent Piping
- Waste and Vent Piping above grade: Cast iron no-hub with 4 band mechanical clamps.
- Waste and Vent Piping below grade: Cast iron hub and spigot.
- Indirect Drains: Copper type ‘M’ for 1” and smaller, type ‘DWV’ for 1 ¼” and larger with sweat joints.
- Storm Drainage Piping Above/Below Grade
- Above Grade: Cast iron no-hub with 4 band mechanical clamps.
- Below Grade: Cast iron hub and spigot.
- Backflow Preventers
- Domestic and Fire water: Install in mechanical room. If reduced pressure type, provide drain funnel and pipe to floor drain.
- Irrigation water: Install in pit in yard with separate water meter.
- Piping Insulation
- End joints of pipe insulation shall be sealed to pipe.
- A pre-installation conference shall be specified to ensure that proper techniques are followed.
- Insulation shall be as listed below for service piping:
- Domestic Water Piping: Fiberglass
- Hot Water Piping: Fiberglass
- Floor Drains
- Provide floor drains in toilet rooms.
- Provide trap primers for all floor drains and floor sinks.
- Fuel Piping
- Liquid Petroleum (LP) Gas Piping:
- Above grade: Black steel, schedule 40
- Below grade: High density polyethylene (HDPE) with electro/heat fusion joints. Pipe shall be installed per 49CFR Part 192 by a certified installer.
- Natural Gas and LP Gas Specialties:
- Gas Meters: Auburn University provides gas meter for installation by contractor.
- Natural Gas Piping:
- Above grade: Black steel, schedule 40
- Below grade: High density polyethylene (HDPE) with electro/heat fusion joints. Pipe shall be installed per 49CFR Part 192, by a certified installer.
- Process Air and Gas Piping
- Air Compressors: Duplex type, 100% capacity each compressor, with ASME stamped receiver.
- Compressed Air Piping: Copper tubing type ‘K’ or ‘L’, less than ½” soft annealed, ½” –1.5” hard drawn, greater than 1.5” schedule 40 black steel.
- Gas Piping:
- Oxygen: Copper tubing type ‘K’ or ‘L’, less than ½” soft annealed, ½” –1.5” hard drawn.
- Argon: Copper tubing type ‘K’ or ‘L’, less than ½” soft annealed, ½” –1.5” hard drawn.
- Carbon Dioxide: Copper tubing type ‘K’ or ‘L’, less than ½” soft annealed, ½” –1.5” hard drawn.
- Helium: Copper tubing type ‘K’ or ‘L’, less than ½” soft annealed, ½” –1.5” hard drawn.
- Nitrogen: Copper tubing type ‘K’ or ‘L’, less than ½” soft annealed, ½” –1.5” hard drawn.
- Nitrous Oxide: Copper tubing type ‘K’ or ‘L’, less than ½” soft annealed, ½” –1.5” hard drawn.
- Vacuum Pumps: Duplex type, 100% capacity each pump.
- Vacuum Piping: Copper tubing type ‘K’ or ‘L’, less than ½” soft annealed, ½” –1.5” hard drawn.
- Medical Gasses: Installation shall be in accordance with NFPA 99.
- Process Water and Waste Piping
- Deionized Water Piping: Polyvinylidene fluoride (pvdf) kynar resin SDR 11-21 with thermal fusion joints.
- Distilled Water Piping: Perfluoroalkloxy pipe (PFA) Teflon schedule 40 or 80 with thermal fusion, mechanical, or threaded joints.
- Lab Acid Waste and Vent Piping: High silicon (14%) cast iron, or glass with mechanical joints, or polypropylene with mechanical joints above grade and thermal fusion joints below grade.
- Reverse Osmosis Water Piping: Polyvinylidene fluoride (pvdf) kynar resin SDR 11-21 with thermal fusion joints.
- Provide shut-off valves for all services into laboratory spaces to allow for single lab to be isolated.
- Domestic hot water shall be a recirculating type system.
- The designer shall minimize quantity of dielectric unions. When used, unions shall be located in accessible locations for ease of maintenance. Engineer shall provide a drawing indicating location of all dielectric unions. Provide ball valves on each side of union to allow for repair of union.
- Floor sleeves shall be cast-in-place schedule 40 steel pipe, 2” above floor, flush with bottom of slab. Sheet metal sleeves are not acceptable.
- Plumbing Fixtures
- Water closets to be vitreous china, wall hung with chair carrier, minimum 2.25” trap-way, low flow design of 1.1 or 1.6 gallons per flush with selectable dual flush handle.
- Urinals to be vitreous china, wall hung with floor mounted carrier, low flow design sensor type with 1 pint per flush.
- Lavatories to be vitreous china, wall hung shall be provided with concealed arm carrier.
- Sinks to be 18 gauge stainless steel.
- Flush valves to be dual filtered bypass (minimum), ADA compliant handle, low flow design.
- Toilet seats to be solid plastic with stainless steel self sustaining check hinges.
- Sink and lavatory faucets to be ¼ turn ceramic disk cartridge type with wrist blade handles.
- P-traps to be 17 gauge with integral cleanout.
- Trap Wrap to be molded plastic type similar to McGuire Pro-Wrap, Truebro LavGuard.
- Finishes to be polished chrome.
- Traps shall have mechanical connection (not soldered) at wall connection to allow for removal and use as a cleanout.
- Plumbing Pumps
- Package booster pumping station to be duplex type, utilize variable speed drive pumps when applicable.
- Sewage ejectors to be used with prior approval only.
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