Straight from the 2009 rating system approved Nov 2008 - downloaded from the website on 11-14-09. It reads:
EQ Pr 3
"Design classrooms and other core learning spaces to include sufficient sound-absorptive finishes for compliance
with reverberation time requirements as specified in ANSI Standard S12.60-2002, Acoustical Performance Criteria,
Design Requirements and Guidelines for Schools."
In the last paragraph above, it reads:
"the prerequisite does not require projects to meet any STC rating."
Could someone please clarify? I've searched errata etc for hours and can not make a determination.
Thanks,
Daniel Hicks
Daniel Hicks, E.I., INCEGeiler & Associates
267 thumbs up
November 16, 2009 - 10:58 am
Sound absorption, interior to the core learning spaces, will determine reverberation time and is part of the acoustics prerequisite.
Sound isolation between core learning spaces, STC ratings, is not part of the prerequisite but is part of EQc9.
Both sound absorption (reverberation time) and sound isolation (STC ratings) are in ANSI S12.60.
Breana Detzler
Project DesignerRisinger + Associates
68 thumbs up
April 6, 2011 - 3:10 pm
Hi Daniel,
Is it still true that the STC ratings are part of the prerequisite for projects registered under the 2007 version? We are trying to wrap up the design submittal for this project and are having a hard time getting STC ratings information for all of our wall assemblies.
Thanks in advance for your (or anyone else who can advise!) input!
Breana
Daniel Hicks
Daniel Hicks, E.I., INCEGeiler & Associates
267 thumbs up
April 6, 2011 - 3:24 pm
Yes. As far as I am aware, STC requirements are still part of the LEED 2007 prerequisite.
Breana Detzler
Project DesignerRisinger + Associates
68 thumbs up
April 6, 2011 - 3:37 pm
Thanks for the quick response! Do you know anyone who achieved this prerequisite? Did they use the alternate compliance path or was each wall, floor, and ceiling assembly able to meet all of the STC requirements in every case?
Daniel Hicks
Daniel Hicks, E.I., INCEGeiler & Associates
267 thumbs up
April 6, 2011 - 4:47 pm
I've consulted on three LEED 2007 projects. We achieved the STC ratings in every case.