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The plumbing systems for the Stanford Graduate School of Business include:

Domestic Cold Water

Domestic Hot Water

Sanitary Waste and Vent

Storm Drainage

Sprinkler and Fire Suppression Systems
The plumbing systems will be designed in accordance with:
California Plumbing Code (UPC).
National Fire Protection Association (NFPA).
Stanford Facilities Design Guidelines
The building water main will be connected to the campus main. The water meter and backflow preventers will be located internal to the building.
The required minimum 35 PSI water pressure at the most remote system point will be provided to satisfy the demand for Domestic and Industrial hot and cold water.
Waterless uri nals will be used in the men’s restrooms and low flow faucets/showerheads will be provided for all lavatories and showering facilities
Dual flush wall hung toilets will be installed in all women’s restrooms. Potable
1 . domestic cold water will be distributed to all plumbing fixtures.
A non-potable water system is under analysis for water closet flushing and should be assumed as integral to the Basis of Design. (see Alternate Water Supply below).
The new Stanford Graduate School of Business aspires to elevate the level of attention paid to water as a resource, in part as a response to ever increasing demands for the limited supply and in part as a natural progression of what has long been a University wide desire to sustain itself within the natural limits of its environment.
As an outgrowth of this aspiration and in an effort to employ an increasing commitment to life cycle thinking, Stanford has commissioned a detailed study of two identified water conservation and reclamation strategies within the framework of a Life Cycle Cost Analysis.

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CEF Reclaim
The schematic intent is to reclaim process water sourced from the Central Energy
Facility (CEF) cooling tower blowdown and boiler condensate bleed-off. This is not a new strategy for Stanford. Conceptual plans on which the analysis is based are intended to supply a distribution network that feeds a campus demand .rough
Given the studies currently underway, an allowance should be maintained for a non-potable dedicated piping network throughout the building. This installation of dedicated pipework would be designed to prevent any cross-contamination connections occurring in the future, when new connections are made.
A back up supply of potable water would be provided to ensure adequate availability throughout the building.
Domestic hot water will be generated using campus steam. Double wall tube and shell heat exchangers as manufactured by Cemline. .A small circulating pump will be provided allowing the target water temperature at each fixture to be maintained.
Hot water will be distributed to all lavatories and janitor closets at a maximum
120F. Hot water flow and return circulation piping and pumps will be required to maintain the design water temperature
A complete gravity sanitary waste and vent system will be provided in accordance with the California Plumbing Code throughout the building. Plumbing fixtures located in the basement level will terminate to sewage ejectors and the discharge connected to the gravity system. Waste from lavatories and showers will be collected separately and terminate into storage tank and shall be treated at the site for reuse.
A building storm drainage system will be provided, complete with roof gutters, overflow drains and primary rainwater leaders. The storm water system will discharge by gravity to the campus storm drain system. It is expected that sumps and sump pumps will not be required. The storm drainage system will be designed to a rainfall intensity of 2” per hour. A subsoil foundation drain will be provided and terminate into a sand interceptor/sump. Sump pumps will be provided and discharge will be connected to building storm drains.
The building will be provided with a wet pipe sprinkler fire suppression system.
The system comprises automatic controls and monitoring equipment. The sprinkler system will be connected directly to the campus water main with a backflow preventer and a fire department connection.
The system criteria shall be established by the bid documents. The final system shall be designed by the contractor in accordance with NFPA 13 Installation of
Sprinklers Systems, with all areas being protected. The following hazard classes are expected:
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Office
MEP Equipment Rooms
Light Hazard
Ordinary Hazard 1
Sprinklers will be provided in accordance with NFPA 13 for the specific hazard classifications listed above with quick response sprinklers being installed within the
Light Hazard areas. Design densities and areas of operation have been based on
0 .15 gpm/ft² over 1500 sq ft. This figure is to be confirmed with the Campus Fire
Department as part of the ongoing process of agreeing the fire strategy for the building.
Water Services Water piping material will be type L copper for above grade and type K copper for underground.
Fire Systems Mild steel with welded, threaded or grooved type mechanical couplings
Sanitation Cast iron no hub pipe with no hub couplings for sanitary systems, polypropylene for corrosion resistance at laboratory system.
Water Closets Vitreous china,siphon jet, wall hung,low flow,white with Flush valve,chair carrier and open front toilet seat.
Urinal Water less, white with chair carier
Lavatory Vitreous china, counter mounted,self rim with battery powered, sensor operated with mixing valve.
Water cooler
Sump Pump
Stainlee steel ,barrier free dual fountain with chiller
Sewage ejector Duplex,submersible,quick disconnect complete with Controller and sump cover. Sump shall be poured in Concrete
Duplex,submersible,quick disconnect complete with Controller and sump cover. Poured in place concrete Sump
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