[Bldg-sim] Window

[Cramer Silkworth]

Carlos,

Can you send me a copy of that CIR? I don't have access to CIRs...so much for LEED being an open and transparent proces. I ask because this memo (http://www.usgbc.org/ShowFile.aspx?DocumentID=2664) says that ashrae addenda are allowed. Also, where in the definition of EAc1 does is say anything about addenda? I've got The Ref Guide for NC 2.2, 3rd Edition October 2007, and there's no mention of addenda that I can find. I'm not trying to nit-pick, but rather make sure I get this right, because of this conflicting info.

-Cramer

-----Original Message-----
From: Carlos Alonso [mailto:carlos.alonso at iesve.com] 
Sent: Tuesday, February 19, 2008 6:34 PM
To: Cramer Silkworth; umit.esiyok at uni-dortmund.de
Cc: bldg-sim at lists.onebuilding.org
Subject: RE: [Bldg-sim] Window

Cramer,
LEED-NC 2.2 does NOT accept addenda of the Appendix G. Not only the fenestration distribution but any of the requirements changed in any of the addenda are NOT accepted. It is in the definition of the Credit EA1 Optimize Energy Performance. There is also a CIR posted in the usgbc website on the 4/25/2007 for this credit where this question is explained.

Hope it helps,
Carlos




Carlos Alonso
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-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Cramer Silkworth
Sent: 19 February 2008 11:23
To: umit.esiyok at uni-dortmund.de
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Window

Umit,

Addendum A removes that statement about uniform distribution, but does not change the area limits. As of April 2007 a design team may use addenda, but you must apply it to the entire LEED submittal (not necessarily all of the addenda, you can use just one if you like, as far as I know)- so you need to read all of Addendum A and follow all of its changes if you want to avoid the area distribution nonsense.

You can find the addenda here: http://www.ashrae.org/technology/page/132 

If there are other modifications to the 40% area limit I don't know of them.

J. Cramer Silkworth
silkworth at transsolar.com 
+49 0711-67976-182
Transsolar Energietechnik GmbH
http://www.transsolar.com
Stuttgart - Munich - New York 

Climate Engineering: Technologies for energy-efficiency and user comfort in buildings.
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-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Ümit Esiyok
Sent: Tuesday, February 19, 2008 12:09 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Window

Dear all,

I simulate an office building from ASHRAE Table G3.1 I read that "Vertical fenestration areas for new buildings and additions shall equal that in the Proposed design or 40 % groß above grade wall, whichever is smaller, an shall be distrubuted uniformly..."
My office building has in reality almost 80 % fenestration area.
my first Qeustion is;
1)in Proposed and Baseline design the fenestration area must be same or not?
2)in both cases should window area be less than 40%?
3)I read from this email group that 40 % fenestration area requirement not aplicable anymore ? is that right?


--
Ümit Esiyok


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