Dear all, The project has 2/4 LPF WC fixtures specified, and the water calculations done accordingly. The Contractor is suggesting a WC fixture with a maximum flush rate of 3/6 LPF, but with a regulating valve that can decrease the flush rate down to zero. In other words, the WC fixture can be adjusted to provide 2/4 LPF, but can be easily adjusted later on to a higher non-compliant flow rate. Has anyone had experience with the USGBC with such types of WC fixtures? Thanks..

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Chris Stigler

Blackney Hayes Architects

LEEDuser Basic Member

0 thumbs up

Thu, 07/05/2012 - 20:20

I have a similar question regarding adjustable flush valves. We are working on a large building pursuing EBOM certification. The proposed retrofit urinal flush valves and new toilet flush valves have an adjustable flush valve which would be set at a low flow level during the performance period. It seems that all calculations would be done at the installed rate, but the valves allow the building owner/maintenance staff to adjust to a higher flow at a later date. How does USGBC view this? thanks

Tristan Roberts

Representative

Vermont House of Representatives

LEEDuser Expert

7780 thumbs up

Fri, 07/06/2012 - 02:08

Similar questions have come up on this forum in the past, and I have always offered the opinion (and I don't recall any disagreement) that LEED recognizes the highest possible flush/flow rate in an adjustable fixture, due to the likelihood that someone will adjust the rate upwards in the future.This could conceivably be viewed differenty in EBOM—I would post your question to the EBOM WEp1 forum.

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