We have been attempting to achieve this credit with tree canopy coverage in our parking lot. Two questions: 1.) What counts as 'shade' - 50% coverage per parking space? 2.) At what time of day/ year is shade measured from? (I have come across an old project that leads me to believe it's measured on the summer solstice when the sun is at the highest point in the sky.)

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Tristan Roberts

Representative

Vermont House of Representatives

LEEDuser Expert

7780 thumbs up

Fri, 09/02/2011 - 12:57

Rebecca, the calculations in the NC version 2.2 Reference Guide state that shade coverage "shall be calculated at 10am, noon, and 3 pm. The arithmetic mean of these three values will be used as the effective shaded area." The v2.2 credit doesn't specify the date for which to calculate these areas, but my understanding is to use the summer solstice, June 21st. (That's made clear in the v2009 credit language.) In terms of what % constitutes shade, it's measured in terms of the whole parking area—50% or more must be shaded. So a single space shaded at 50% would only could at 50% toward the necessary total.

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