[Equest-users] LEED EA comments about Model Area and the architecture GFA

[Paul Diglio]

Jenny:

Per the attached Advanced Energy Modeling for LEED V2-1, which is available for 
free download from LEED On-line, page 30, it states that a 10% variance for 
built up areas is allowed.

I have submitted projects to LEED with a 3% or greater deviance and have not had 
a problem.  We can only trace the CAD drawings and if they are not to scale or 
if the design team does not include all wall thickness in the gross square foot 
area, the model and design areas may vary.

 Paul Diglio, CEM, CBCP


87 Fairmont Avenue
New Haven, CT  06513
203-415-0082


www.pdigliollc.com




________________________________
From: Jenny Zhang <jenny.zhang at arup.com>
To: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Thu, February 28, 2013 7:40:21 AM
Subject: [Equest-users] LEED EA comments about Model Area and the architecture 
GFA


Dear All friends,
 
I got a LEED EA Cr1 review comment from GBCI. 
It’s about the model area and architecture Gross square footage. The total 
building area in the simulation report is 1,121,319.6 square feet and the area 
in architecture documents is 1,161,727.32 square feet. The comments said that 
the area value in the model should be consistent with all other credits and LEED 
online and/or provide a supplemental narrative explaining the discrepancy.
 
As a energy modeller I think all of you know that the area in the model could 
not be easily consistent with the architecture CAD drawings. Although In the 
footprint drawing stage I was very care about each floor’ area(because I 
understand the area in the model should be consistent with CAD drawings 
especially when it was for a LEED model), it still results discrepancy in the 
two area values.
 
Now the difference about the two area values is about 40407.4 sqft (3754sqm), 
and it is only 3% of the total area. It’s hard to revise the model in this 
stage, but what I should do to explain the discrepancy. Does anybody here have 
experience to deal with this problem?  And do you know how much difference (%) 
could be accepted by the review team?
 
Thanks for your attention.
 
Jie Zhang
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