We are using the shadow of the trees canopy to comply with the credit. When calculating the average shadow of three times a day, part of this is outside the site boundary. Should we consider the lenght of it also outside the site for the calculation? Or only average the parts of the shadow inside the site?
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Crissy Tsai
Sustainability CoordinatorWebcor Builders
58 thumbs up
December 27, 2012 - 8:22 pm
Carolina,
I haven't used the shadow of the tree canopy method in a while, so I'm not positive if this response is correct. I would think that you should use the average parts of the shadow inside the site.
Carolina Vergnano
LEED APConcremat
145 thumbs up
January 2, 2013 - 9:18 am
Thank you Crissy!
I'm wondering if we should also exclude the parts of the shadows inside the landscape for the average calculation...
Did anyone have this kind of issue using this method?
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11478 thumbs up
March 22, 2013 - 11:41 am
Carolina, I'm a little confused. I don't think you can take credit for shading that occurs outside your LEED boundary, but I'm not sure if that was your question.
Lawrence Lile
Chief EngineerLile Engineering, LLC
76 thumbs up
April 10, 2015 - 11:36 am
If I understand the question correctly (not sure I do) shadows outside the LEED boundary don't affect you one way or the other. Shadows within the leed boundary that fall on hardscape do help you. Shadows within the LEED boundary that fall on non-hardscape don't affect the calculation one way or the other. It is the percentage of hardscape area within the LEED boundary that is shaded that is important.
Paul Bierman-Lytle
Executive Director of Technical ServicesPaladino and Company
3 thumbs up
June 10, 2020 - 9:16 am
What is the canopy diameter of a tree for use in calculating Heat Island Reduction, i.e. shading of nonroof surfaces? Is the diameter taken at 3-year growth, 5-year, 10-year, etc.? Makes a big difference.