EApr2 requires the Engineer to provide documentation indicating that the local codes are more stringent than Ashrea 90.1. In my case the lighting systems have been designed in strict complinace with California Title 24 energy efficiency requirments. In discussions with many local individuals, we are certain that title 24 is more stringent than Ashrea 90.1. However, no specific source can be located, that can confirm this assumption. I would think, that the USGBC has reviewed this problem before. Is there any documentation regarding this issu?
For projects IN CALIFORNIA, studies have indicated that Title 24 (2001) is more stringent than ASHRAE 90.1-1999. The USGBC has determined that projects in California may use Title 24 compliance documentation to achieve both Energy and Atmosphere prerequisite 2 and to demonstrate achievement of energy optimization points under EA credit 1. A v2.0 EAc1CIR dated 10/25/01 identifies the credit eqivalence table for achieving energy points using Title 24 (subtract 10 from each ASHRAE performance % number). If Title 24 is the local energy code for this project, it may be used to demonstrate compliance with this prerequisite and achievement of EA c1 points.