[Equest-users] Base Case building glazing

[Nick Caton]

Anura,

 

Your baseline can "neglect" the balconies if you are considering them
fixed shading devices (I would if they aren't enclosed spaces)- this
isn't uncommon for building projections in hotels/apartments and the
like.

 

To both inquiries - how you're to distribute baseline model windows when
your WWR is >40% is worded differently depending on whether you're under
90.1-2004 or 2007.  Whether a space is conditioned or occupied has no
bearing on how you should distribute fenestrations.

 

Assuming you are under 40% gross WWR, simply use the same window
distribution on your baseline as is used in the proposed model (i.e.
don't try to re-locate the windows).  

 

If your gross WWR is >40%, the options you have available to you depend
on how Appendix Table G.3.1.5.c. is worded.  2007 tells you to use the
same proportions on each orientation as the proposed, and 2004 tells you
to use uniform bands distributed equally on all faces.  

 

If you were so inclined, you could define uniform bands representing the
same per-orientation proportions under 2007, but to me that seems a
laborious route that's potentially disadvantageous to your performance
rating.  I've attached a discussion from a few weeks ago outlines
exactly how I'd deal with a WWR > 40%, if you're interested in a
step-by-step.

 

~Nick

 

 

NICK CATON, E.I.T.

PROJECT ENGINEER

Smith & Boucher Engineers

25501 west valley parkway

olathe ks 66061

direct 913 344.0036

fax 913 345.0617

www.smithboucher.com 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of anura
perera
Sent: Friday, March 04, 2011 7:05 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Base Case building glazing

 

Dear All,

 

I am in the process of  modelling a multi story building using eQUEST. I
would like to get your opinion on the followings.

 

1. The building has extended open balconies in each floor where this
space can be used by occupants. Can I consider distributing windows for
the base case as indicated in Appendix G, neglecting balconies?

 

2. The building also has a recessed unconditioned occupying zone in one
of the intermidiate floors. How should one consider this space in
distributing windows for the base case.  How should the windows spread
on the exterior surface? exclude recesses zone and place them on the
exterior wall or spread continously as other zones including the
recessed zone

 

Thanks in advance

 

Anura

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From: "Nick Caton" <ncaton at smithboucher.com>
Subject: RE: [Equest-users] how to model 40% glazing on baseline
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