[Bldg-sim] ASHRAE 90.1 building rotation reasoning

Cramer Silkworth silkworth at transsolar.com
Tue May 12 11:20:14 PDT 2009


Shoot, I was thinking of the fenestration distribution change in Addedum
A. Sorry all.

-Cramer 
 
  _____  

From: Robby Oylear [mailto:robbyo at rushingco.com] 
Sent: Tuesday, May 12, 2009 2:05 PM
To: Cramer Silkworth; christopher.zabaneh at ibece.net
Cc: bldg-sim at lists.onebuilding.org
Subject: RE: [Bldg-sim] ASHRAE 90.1 building rotation reasoning



I think you’re mistaken.  You may be thinking of addenda a  which
removes the requirement to spread all glazing equally across all
orientations of the building.  Which addenda removes the requirement to
rotate your building?  

 

Robby Oylear, LEED® AP

Mechanical Engineer

direct: 206.788.4571

cell: 206.354.2721

www.rushingco.com

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Cramer
Silkworth
Sent: Tuesday, May 12, 2009 11:02 AM
To: christopher.zabaneh at ibece.net
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] ASHRAE 90.1 building rotation reasoning

 

Christopher, 

  

One of the addenda to 90.1 removes this requirement and the use of
addenda is accepted by USGBC, so you don't need to waste your time. 

  

-Cramer 

  

J. Cramer Silkworth 

Transsolar Inc. 

Technical consulting for energy efficiency and user comfort in
buildings. Stuttgart - Munich - New York 

134 Spring Street Suite 601 

New York, NY 10012 

212-219-2255 

silkworth at transsolar.com 

 

  _____  

   From: Christopher Zabaneh [mailto:christopher.zabaneh at ibece.net] 
Sent: Tuesday, May 12, 2009 1:33 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] ASHRAE 90.1 building rotation reasoning

What is the original reasoning behind the ASHRAE 90.1 Appendix G
building rotations through 0, 90, 180 and 270 degrees? 

 

If the building is only going to have one orientation, why go through
the trouble of rotating and averaging the building values when there
should be only one base case? 

 

Are steps being taken by ASHRAE or the energy modeling community to
change this? 

 

Thanks kindly, 

 

Christopher F. Zabaneh 

B.Sc.Eng, LEED® AP
IBE Consulting Engineers
14130 Riverside Drive, Suite 201
Sherman Oaks, CA 91423-2313
p    (818) 377-8220  X 295
f     (818) 377-8230
IDEAS FOR THE BUILT ENVIRONMENT

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