We’re pursuing Option 3 for exterior lighting and the difference in illumination is greater than 20% so we don’t comply. In this case, can we pursue the illumination requirements for the applicable lighting zone (similar to LEED-NC)? For example if we

Page 71 of the LEED-EBOM v2009 Reference Guide outlines a path for Option 3 to comply with the maximum footcandle levels prescribed by IESNA RP-33.

Question

We’re pursuing Option 3 for exterior lighting and the difference in illumination is greater than 20% so we don’t comply. In this case, can we pursue the illumination requirements for the applicable lighting zone (similar to LEED-NC)? For example if we’re in LZ4 and the illuminance at the site boundary is less than 0.6 fc can we comply that way?

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