[Bldg-sim] Do I need to use the actual window shape?

[Alex Krickx]

Hi Esmireta,

I'm not sure about what LEED requires, but I would be aware that in addition to Window-Wall Ratio, you should also consider Glass-Frame ratio. Depending on the software and method that you model windows, two 3'x5' windows with a 1" frame are NOT the same as one 6'x5' window (the 6'x5' would have two vertical components, whereas the two 3'x5' would have four vertical components). I'm not sure a LEED reviewer would notice the difference, but I think best practice is to include the correct frame area in your model.

Kind regards,
Alex Krickx

Alex Krickx, LEED AP
Building Energy Specialist
Serious Energy, Inc.
1250 Elko Dr, Sunnyvale, CA 94089
(t) 408.541.8124
akrickx at seriousenergy.com

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From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Esmireta
Sent: Thursday, February 23, 2012 5:45 PM
To: BLDGSIM
Subject: [Bldg-sim] Do I need to use the actual window shape?

When doing the LEED project, do I need to use the actual window shape, or just keep the window-wall ratio in each direction?
I don't think the window shape will influence the energy cost if the window-wall ratio is the same. But I don't know if the LEED reviewer care about it.
Thanks a lot!

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