Friday, December 9, 2011

LEED vs ASHRAE 90.1-2010

Be Aware


The energy conservation rules inherent in LEED are at present, based on ASHRAE 90.1-2010.  Tennessee and Georgia's codes are based entirely on the 2009 International Energy Conservation Code, and Florida's new code is a blend of what was Chapter 13 of the Florida Building Code and the 2009 IECC.  If you are involved in a LEED project in any of the three states mentioned above, you can only use the LEED rules if they are equal to or more stringent than the energy codes which have been adopted by the individual states.


Example:
ASHRAE 2010 says that you can exclude the power required for the transition lighting at the portal to a parking garage.  There is no present exclusion for the the Tennessee code.


The solution if you are doing a LEED project in Tennesse then is to take the more stringent route and count the watts for the the transition lighting.





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