[Bldg-sim] LEED project - maximum limit allowed to simplified wall azimuth.

[Andrew S. Hoover via Bldg-sim]

Can does not mean you will have an accurate model.  All too often the
questions are about what can or what must I do and not about what is best to
do.

 

From: Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of
Leonard Sciarra via Bldg-sim
Sent: Thursday, December 15, 2016 1:05 PM
To: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] LEED project - maximum limit allowed to simplified
wall azimuth.

 

Julian – 

 

The text is written to include 45 degrees.  So if they are 45 degrees, then
you can make it a square, although the exception was intended for curved
surfaces.

 

Hope this helps.

                                                                      
Leonard Sciarra, AIA, ASHRAE, LEED ap+ 
Senior Associate 
+1 312.577.6580 Direct 
+1 312.456.0123 Main 
+1 847.345.5619 Mobile 
                                                                      
Gensler 
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From: Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of
via Bldg-sim
Sent: Thursday, December 15, 2016 11:17 AM
To: bldg-sim at lists.onebuilding.org <mailto:bldg-sim at lists.onebuilding.org> 
Subject: [Bldg-sim] LEED project - maximum limit allowed to simplified wall
azimuth.

 

Hello,

 

Does anyone know how to interpret “no more than 45 degrees” of exception 5.b
- table G3.1 (90.1-2007/2010/2013) ? : 

 

5.  Building Envelope

All components of the building envelope in the proposed design shall be
modeled as shown on architectural drawings or as built for existing building
envelopes. 

 

Exceptions:

b. Exterior surfaces whose azimuth orientation and tilt differ by no more
than 45 degrees and are otherwise the same may be described as either a
single surface or by using multipliers.

 

Because “no more than 45 degree” include 45 degree, does the exception still
apply if the azimuth of two walls is exactly 45 degrees? 

In other words, considering a LEED project, can a perfect octagonal building
shape be modeled as a square building (as long as they have the same floor
area and the 8 walls have a similar construction) ?

 

Thanks

 

Julien

____________________________________________________________________

Julien Dutel, ing., CEM, CMVP.

Direction des secteurs résidentiel, institutionnel et des affaires

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 <mailto:julien.dutel at mern.gouv.qc.ca> julien.dutel at mern.gouv.qc.ca

mern.gouv.qc.ca

 

 

 

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