ANSI S12.60-2002 vs LEED Template

Brian Moran

LEEDuser Basic Member

17 thumbs up

September 19, 2011

The ANSI S12.60-2002 standard requires that core learning spaces, between 10,000 and 20,000 cubic feet, have reverberation times that do not exceed .7 seconds. The LEED template states that "The project team will demonstrate through calculations based upon the requirements of ANSI Standard S12.60-2002, that each of the classrooms and core learning spaces has a reverberation time of 0.6 seconds or less." It seems that there is a discrepancy between the ANSI standard of .7 seconds and the template. The template requests .6 seconds, which is not what the standard references. Has there a clarifying position been posted/released on this issue on the part of GBCI/USGBC?

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Daniel Hicks

Daniel Hicks, E.I., INCE

Geiler & Associates

LEEDuser Basic Member

175 thumbs up

Fri, 09/30/2011 - 16:41

Hi Brian: I can't find in any of my templates where it says "0.6 seconds or less". All of the ones I've worked on, and the current credit requirements, say that the reverb time needs to meet the ANSI standard. It's possible that it's a new revision and a typo. If you want a definitive answer, I would ask for clarification. I, personally, would follow the ANSI standard (as that is the original basis for the LEED requirements) and then explain what I did in the comment box.