Date
Inquiry

This CIR has two parts. Please confirm following approach to meet LEED NC 2.2 EA P2 is acceptable for certification purpose. 1. The envelope design has opted to use trade-off method using COM Check program to demonstrated compliance with ASHRAE 90.1 2004. As per CIR ruling 12/5/2005 COMCheck program can be used to prove and submit compliance with ASHRAE 90.1 2004. Please confirm that using this program this is acceptable for LEED NC 2.2 certification. 2. The project includes development of a park which will handed over to the City. The lighting on the park is dictated by the city\'s regulations and might not be within limits required by ASHRAE 90.1 2004. We will submit documentation with the city\'s lighting codes and non-compliance areas. Because the project design and owner have no control in reducing the lighting wattage, we request an exception to the rule. All other grounds and exterior lighting in the project realm is within the specified ASHRAE 90.1 2004 limits.

Ruling

The project team has requested clarification regarding two issues: (1) whether the trade-off method using the COMcheck program is an acceptable means of documenting compliance with ASHRAE 90.1-2004; (2) whether ASHRAE 90.1 Exterior lighting requirements apply to areas of the site where city regulations mandate lighting that uses more energy than allowed by ASHRAE 90.1. 1. The trade-off method using the COMcheck program is an acceptable means of documenting envelope compliance with ASHRAE 90.1-2004. 2. ASHRAE 90.1-2004 section 9.1.1(c) Exception (c) specifically exempts lighting that is designated as required by a health or life safety statute, ordinance, or regulation from the standard. If the park lighting dictated by the city\'s regulations meets the requirements for this exception, then it does not have to comply with ASHRAE 90.1-2004 requirements. However, if the lighting is not specifically exempted by ASHRAE 90.1-2004, and the portion of the park mentioned is part of the overall site boundary for the LEED submittal, then the lighting must comply with the limits required by ASHRAE 90.1-2004. Applicable Internationally.

Internationally Applicable
On
Campus Applicable
Off