1) There is a bug in the template. It adds "square footage" and "number of parking spaces" together!
2) We stick with Option 2 (50% spaces under cover) and plan to go for EP, but it wants us to fill in the table of roof coverage and there I can see a problem.
Reference guide says: To earn exemplary performance point put all the parking spaces under cover. Under cover means underground, under roof, under deck or under building. So far so good.
We have a 2-story underground garage, that is partially covered by building, vegetated surface and hardscapes. All garage spaces are in the underground so it should be a piece of cake, but... according to this template it is not so obvious.
When it comes to asphalt driveways on terrain (only drop off zone) it will hardly comply with SRI>29. Does it mean, that those parking spaces under the roadway do not comply and therefore we cannot earn EP? It is still in the underground... Question is, if the garage roof coverage (partially vegetated and covered with asphalt and hardscapes) which is in the same level with surrounding terrain should be considered as "roof". It has impact on other credits as well (SSc7.2, SSc5.1, SSc5.2...). Nothing seems to be as obvious as it was at the begining...
Petra Hajná
Sustainability ConsultantSkanska Czech Republic
189 thumbs up
December 14, 2011 - 8:24 am
... this is too long post. I'll cut it a bit.
What if "underground" garage footprint is larger than footprint of the building above terrain? Is the difference area between those two footprints considered a"roof" of the garage so SRI>29 rule applies here?
Crissy Tsai
Sustainability CoordinatorWebcor Builders
58 thumbs up
December 19, 2011 - 6:52 pm
Petr,
Sorry for not responding to this sooner. I believe you will not be able to include the parking spaces that are covered by SRI<29 material ie the asphalt. In the template you should input the different types of materials with the parking spaces it covers. Then enter the number of spaces covered by vegetated roof, and number of spaces underground.
Hope that helps.
Ward Miller
Chief Environmental OfficerAlpenglow Advisory
64 thumbs up
September 5, 2012 - 4:00 am
CIR #1964 dated 2/14/2008 states, "Roofs used to shade or cover surface parking in order to meet the Option 2 requirement, must have an SRI of at least 29. However, an SRI requirement does not exist for parking placed underground, under deck, or under a building, so long as the exposed parking surface area, if any, is less than or equal to 50 percent of the total parking surface area. ***The previous ruling for this CIR, dated 02/14/2008, has been overturned on 9/3/2008.*** Applicable Internationally."