I have a project with a Project Development Density = 298,419 Sf/acre and after the calculations the Average Neighborhood Development Density = 249,458 Sf/acres.
I want to pursue the exemplary performance ID credit however I am confused by the calculations needed, do I have to double the area and use equation 2 then use the new radius to locate all building within the new radius and after use equation 3 to calculate the new Average Neighborhood Development Density for option 2 ?
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Deborah Lucking
Director of SustainabilityFentress Architects
LEEDuser Expert
260 thumbs up
May 13, 2015 - 2:04 pm
Whysal, which version of LEED are you referring to - LEED v2.2. or LEED 2009?
For LEED 2009, (from the LEEDuser Bird's Eye View above) Projects can earn an Exemplary Performance point through IDc1 if they meet Option 1’s requirements and are themselves twice as dense as the surrounding area, or can show that the surrounding area has double the required Option 1 density over twice the area.
It appears that your project alone is more than twice the 60,000 SF/acre, so that should suffice for the Exemplary Point.
Whysal Haddad
May 14, 2015 - 4:10 am
Hello Deborah
We are using LEED V2.2, I have pursued the ID credit but the GBCI needs the calculation showing the compliance, I have referred the credit to SSc2 but they still request to show compliance by calculation.
I would like to have a sample calculation of the exemplary performance for the ID SSc2 .
Michelle Robinson Schwarting
148 thumbs up
May 14, 2015 - 7:51 am
Yes, Whysal, your explanation of what you have to do for calculations as described in your original question is correct. (Double your project's site area to calculate the new revised Density Radius as you described.)
The requirements are explained in these two LEED Interpretations for reference:
http://www.usgbc.org/leed-interpretations?keys=1536
http://www.usgbc.org/leed-interpretations?keys=5004
In terms of documentation we typically show a neighborhood plan with two radii -- one for the original SSc2 calculations and a second radius for the Exemplary Performance level's Density Radius. (And we typically show the math as to how both of those distances were calculated.) Then we have a spreadsheet with each property address, building space, and site area -- highlighting the ones that only contribute to the Exemplary Performance calculations and not to the original SSc2 calculations. Basically this does the same thing as the sample area plan and sample area properties table that are shown in the LEED Ref. Guide.
(There are actual examples in LEED User, but you have to be a paid Member to access them under the Documentation Toolkit tab.)
Does that answer your question?