Hello,
Could someone please clarify where exterior hardscape spaces that are covered by the building roof should be counted? I had placed them in the 'hardscape' square footage number in PI f2 as opposed to the building footprint number, however since the hardscape number transfers over to SS 7.1, it hurts our calculation there.
For example - a 1 story building has a footprint of 20,000 sf and roof overhangs totaling 5,000 sf, resulting in a total roof area of 25,000 sf. This sits in a LEED project boundary of 50,000 sf. The entire site is hardscape with SRI values exceeding 29 (including the covered areas under the roof overhangs), resulting in a total hardscape number entered in PI f2 of 30,000 sf. So when you get to SSc7.1, it seems that you should be able to claim exemplary performance since 100% of your site hardscape has an SRI of 29 or greater (30,000sf), however the numbers entered give you a calculation of 25,000sf out of 30,000sf instead since there does not seem to be anywhere to place hardscape areas covered by roofs.
Thank you.
Kimberly Frith
323 thumbs up
February 22, 2014 - 2:02 pm
Esmerelda, if your hardscape is covered by a reflective roof you should be able to count that towards compliance for SSc7.1 ("shaded by structures with SRI >29"). Check out the birds eye view on the SSc7.1 page:
http://www.leeduser.com/credit/NC-2009/SSc7.1
Esmeralda Ward
NAC Architecture36 thumbs up
March 5, 2014 - 8:17 pm
Thanks for your reply Kimberly. I will add the hardscape areas covered by the roofing as you suggest. I had not added those areas originally because I count them in the SSc7.2 calculations - does that matter that we will be 'double-dipping' by counting these areas twice?
Thanks,
Esmeralda
Kimberly Frith
323 thumbs up
March 7, 2014 - 2:10 pm
Your SSc7.2 roof areas should have enclosed gross floor area below, so overhangs would not be included in those areas. Check out the SSc7.2 forum for more specific details:
http://www.leeduser.com/credit/NC-2009/SSc7.2
and the LEEDuser glossary definition for roof area:
Roof area is the area of the uppermost surface of the building which covers enclosed Gross Floor Area, as measured when projected onto a flat, horizontal surface (i.e. as seen in Roof Plan view). ‘Roofs’, or portions of roofs, covering unenclosed areas (e.g. roofs over porches and open covered parking structures) are not included in the areas used to evaluate compliance with SSc7.2, though they may be applicable to SSc7.1.
Esmeralda Ward
NAC Architecture36 thumbs up
March 7, 2014 - 2:14 pm
Kimberly,
Thanks very much for that clarification. I did not realize that overhangs should not be included in 7.2 calculations and have actually included those in previous project documentation and USGBC approved them without comment. I will revise the 7.2 calcs for this project though.
Thanks again,
Esmeralda