Dear all
About this statement:
"Projects located where standard supply pressure is different than the LEED baseline supply pressure may calculate the water consumption of flow fixtures and fittings at the local standard supply pressure; the supply pressure must be consistent in the baseline and proposed case."
Because this is the case in Portugal (standard 3 bar), I would go for this approach, but the second part of the statment seems to indicate that we should compare this value with the baseline, at the same pressure. So should we adjust the values of the baseline flow rates in the calculator considering the same pressure, and if so, how? Or should we just compare the baseline values at a pressure of 415 kPa with the proposed values at a pressure of 300 kPa?
Thank you
Greenlab
Green Lab6 thumbs up
June 18, 2020 - 6:11 am
Also, we have a supplier who cannot provide us with the flow rate of a fixture at different water pressure, so our case falls under the following statement in LEED v4.1 manual:
"Projects that are unable to provide manufacturer documentation of the fixture flow rate at the LEED baseline water supply pressure may use the local standard supply water pressure in the design case and the standard LEED baseline flow rates in the baseline case."
So, in this specific case, does this imply that we shoud compare the baseline values at a pressure of 415 kPa with the proposed values at a pressure of 300 kPa, since we don't have the information on the supply rate at other water pressure value?