Hi all,
I am currently doing daylighting simulation for LEED 2009, but there
is always SquareFootage discrepancy of each room between my daylighting
modeling tool and the Revit model, it just can not be 100% the same with
the design model. But the leed requrire the SF of each room should be same
with the architecure drawings and daylighting report? Could anyone help me
with it, is there any allowance range for the simulation method for LEED
2009, which is not mentioned in the reference guide?
Thanks so much,
Te
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.
Hope this helps.
Different area conventions exist. For example, in the UK we have nett
lettable area and gross internal area. The former has partition thickness
subtracted whilst the latter doesn't. This can easily account for 10%
difference. I'm not sure what area convention revit defaults to (or even if
alternative conventions can be selected).
Chris
Sent from my Android device. Please excuse typos, etc.
Te Qi,
If you're talking about LEED credit IEQ 8.1, I have noticed that reviewers only care if all of the credits that rely on "regularly occupied space" (ROS) are filled out the same, and that they add up to the building total sf.
It is very difficult to get the architect's numbers and the daylight simulation numbers to be exactly the same, so I usually just use their numbers (as long as they are within about 5% of mine) and report the % of each room that qualifies.
I suggest trying the www.LEEDuser.com forum since this forum is mostly about energy modeling.
Best,
*Jill Dalglish, LEED AP BD+C*