G
Plumbing
compliance verification without documentation only for these criteria. Upon the Rater’ s discretion, a flow test performed by the Rater may also be used as an acceptable alternative method of verification.
Measure G2.4
Field Verification: The Rater will conduct field compliance verification and take representative photos of urinals.
Documentation: The Rater must collect documentation that shows the average flow rate for all urinals. Assume the flow rates for the flush urinals are the flow rates stamped on each urinal unit or found in the manufacturer’ s literature. For urinals without flush valves( that is, zero-water urinals), assume the flush rate is zero gallons / minute. A narrative or worksheet must be supplied that calculates the average flow rate for all urinals( showing the number of urinals, the flow rate for each type, and the average flush rate calculation) unless all urinals are zero-water urinals( in which case only the final verification is required).
INTENT To reduce indoor potable water consumption and pressure on delivery and sewage infrastructure.
G3. PRE-PLUMBING FOR GRAYWATER SYSTEM
CRITERIA FOR QUALIFICATION
One point of credit is available for installing the pre-plumbing system necessary for a graywater system. At a minimum, pre-plumbing consists of installing all of the appropriate indoor plumbing drain assemblies to collect water from the desired sites( at a minimum, from the clothes washer or an equivalent volume) and stubbing out to the exterior, in order for the exterior plumbing for graywater distribution to be easily attached at a later date.
VERIFICATION Field Verification: The Rater will conduct field compliance verification.
Documentation: The Rater will collect an Accountability Form with the appropriate documentation signed by the builder, developer, architect, or system designer / installer, stating compliance with the building code and with this measure.
INTENT To reduce the use of potable water for landscape irrigation.
G4. OPERATIONAL GRAYWATER SYSTEM
CRITERIA FOR QUALIFICATION
DRAFT
Three points of credit are available for a graywater system designed and installed for landscape irrigation use( i. e., not a septic system) or indoor water use. The system must be designed to collect the graywater from at least the clothes washer or equivalent volume. The graywater system must include a storage tank that can be used as part of the irrigation system.
DRAFT GreenPoint Rated New Home Rating Manual 46 Version 6.0, September 2013
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