[Equest-users] External Shading and Self-Shading

[Bishop, Bill]

Nick,
 
ASHRAE Standard 90.1, 2004, Appendix G., p.172, "The [baseline] building
shall be modeled so that it does not shade itself." (P. 178 in
90.1-2007.)
 
Regards,
Bill
 
William Bishop, EIT, BEMP, LEED(r) AP | Pathfinder Engineers &
Architects LLP
Mechanical Engineer
 
134 South Fitzhugh Street
Rochester, NY 14608
T: (585) 325-6004 Ext. 114
F: (585) 325-6005
wbishop at pathfinder-ea.com
www.pathfinder-ea.com
P Please strive to live sustainably.
________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Nick
Caton
Sent: Tuesday, March 23, 2010 9:57 AM
To: Wilson, Luke; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] External Shading and Self-Shading
 
Luke,
 
1.       Concur!
2.       First - wow, I never noticed this input... but I'd like to
guess at your intent and have a 90.1 question.  I flipped open my 90.1
2004 & 2007 to find the passage where it says "baseline models shall not
be self-shading..."  and I can't seem to find it =/.  TG3.1, section 5
for building envelope seems to only mention shading projections being
excluded in baseline models.  That said, I'm certain I first picked up
the term "self-shading" somewhere within 90.1... am I incorrect in
thinking/hoping all baseline envelope constructions should have their
"Shading Surface" field set to "No?"
 
~Nick
 
 
NICK CATON, E.I.T.
PROJECT ENGINEER
25501 west valley parkway
olathe ks 66061
direct 913 344.0036
fax 913 345.0617
Check out our new web-site @ www.smithboucher.com 
 
From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Wilson,
Luke
Sent: Tuesday, March 23, 2010 8:35 AM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] External Shading and Self-Shading
 
Equest-users,
 
After playing around with my model for a while, I think I can answer my
own questions.
 
1. You can model these surrounding buildings as "Building Shades" in
detailed mode.
2. You can turn off/on whether an external surface is a "Shading
Surface" in the spreadsheet view of Building Shell.
 
Thanks anyway,
Luke Wilson
 
From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Wilson,
Luke
Sent: Monday, March 22, 2010 1:56 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] External Shading and Self-Shading
 
Hello,
I have two questions.
1. If you have a building with other buildings modeled in close
proximity, does equest take into account the shading from the
surrounding buildings?
2. Are equest models self-shaded and if so can you turn this feature
on/off?
 
Thanks in advance,
Luke Wilson

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