USGBC released a revised Purchasing Calculator with an updated weighted average formula for lamps. The link to the calculator in the Resources tab will take you to the updated version.

In v2009, you could use 3.6 GPF blowout toilets in institutional uses, but could not show savings for using blowout toilets with lower flow.

Dear all, Currently I have a project where energy meters comply with all the corresponding credit requirements except that they do not display energy demand.

Is there a definition of nightime hours for internally illuminated signage? I would assume midnight to 6 AM as in the excemption for facades but I can't find any statement.

Does anyone know if there is an alternate strategy for lighting quality that can look at Circadian Rhythm and designing to that? Thanks

In the site Management Policy (and SSc5 Credit) soil testing requirement have been added since 2009.

In one of our projects, the client is willing to have open spaces with high flexibility. In these open spaces, “boxes in the box” for copy rooms will be created.

Hi, I am working on a store located on the groung floor of a mall.

LEED V4 homes awards ( and generously) for residential projects with areas smaller than an accepted reference standard, and deducts points for residential units exceeding these standards.

Hi all, Is Ireland Climate Zone 5A or 5C?