[BLDG-SIM] ASHRAE 90.1 window-wall ratio

[David S Eldridge]

There is a standard interpretation on the ASHRAE website where the
committee suggests that underground surfaces of conditioned spaces are
included in the calculation, as they are part of the heat transfer
envelope.

http://www.ashrae.org/content/ASHRAE/ASHRAE/ArticleAltFormat/2005859471_
347.pdf

Hope this helps!

David


> -----Original Message-----
> From: BLDG-SIM at GARD.COM [mailto:BLDG-SIM at GARD.COM] On Behalf 
> Of Gerald Pde
> Sent: Friday, April 21, 2006 9:07 AM
> To: BLDG-SIM at GARD.COM
> Subject: [BLDG-SIM] ASHRAE 90.1 window-wall ratio
> 
> I recently came across a paper from "Building Energy Codes 
> Program" called "Settign the Standard" and lists out various 
> new code updates. It seems that currenty we are allowed to 
> count below-grade walls as part of the window-wall ratio 
> calculations.  Does anyone have an update on this or point me 
> to the right resource to confirm this information?
> 
> Thanks.
> Gerald
> 
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