[Bldg-sim] ASHRAE 90.1 Window to Wall area definition

[Jim Dirkes]

You people rock.  I got way smarter in 5 minutes of reading your posts than
5 hours of scouring references.

On Thu, Oct 15, 2015 at 2:06 PM, Elizabeth Gillmor <
elizabeth at energetics-eng.com> wrote:

> That is a great point. Appendix G is different from the prescriptive
> requirements.
>
> The prescriptive requirements (and thus Energy Cost Budget method) allow
> you to count below-grade conditioned walls as per section 5.5.4.5 as part
> of your "gross wall area", while Appendix G specifically says above-grade
> walls only.
>
>
> *Elizabeth Gillmor  PE, BEMP, LC, LEED AP*
>
> *e n e r g e t i c s  **consulting engineers, llc*
> energetics-eng.com
> c 303.619.0091
>
> On Thu, Oct 15, 2015 at 11:38 AM, Shaun Martin <
> smartin at shaunmartinconsulting.com> wrote:
>
>> Page 213 of 90.1-2010 says “above-grade”
>>
>>
>>
>> Shaun
>>
>>
>>
>> Shaun Martin LEED-AP, BEMP
>>
>> Principal
>>
>> Shaun Martin Consulting
>>
>> #90 – 425 Carrall Street
>>
>> Vancouver, BC  V6B 6E3
>>
>> p. 604-789-1095
>>
>>
>>
>>
>>
>>
>>
>> *From:* Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] *On
>> Behalf Of *Jones, Christopher
>> *Sent:* Thursday, October 15, 2015 10:15 AM
>> *To:* bldg-sim at lists.onebuilding.org
>> *Subject:* [Bldg-sim] ASHRAE 90.1 Window to Wall area definition
>>
>>
>>
>> I know this question has been asked before but I could not find a related
>> thread.
>>
>>
>>
>> 90.1 states that the WWR is based on the gross wall area and the
>> definition of gross wall area includes below ground walls as well as above
>> ground walls..  Including the below grade walls can make a significant
>> difference in the WWR for typical urban high rise buildings with a number
>> of below grade parking floors.
>>
>>
>>
>> Can someone confirm that the WWR calculation is based on above grade wall
>> area plus below grade wall area?
>>
>>
>>
>>
>>
>> [image: cid:image003.png at 01D09C46.E75BA0D0]
>>
>> *Christopher Jones,* P.Eng.
>> Senior Engineer
>>
>>
>>
>> *WSP Canada Inc.*
>>
>> 2300 Yonge Street, Suite 2300
>>
>> Toronto, ON M4P 1E4
>> T +1 416-644-4226
>>
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>>
>> C +1 416-697-0056
>>
>>
>>
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-- 

James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim at buildingperformanceteam.com

Website <http://buildingperformanceteamcom>l  LinkedIn
<https://www.linkedin.com/pub/jim-dirkes/7/444/413>

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