[Equest-users] Modeling Roofs

[Lars Fetzek]

Susan,
 
    Complex roof geometries can be defined with polygons, which is
especially helpful for visualization for verification of correctness (but
tedious).  However, if the polygons are terribly complex, you might consider
simple rectangular roofs having the correct area as measured rather easily,
say, from AutoCAD files of the building plans.  This should not adversely
affect roof heat transfer by pure conduction.  However, I do not know
whether it will adversely affect roof heat transfer due to light absorption.
This depends upon eQuest's internal algorithm, to which someone more
knowledgeable must speak.
 
Lars Fetzek, EI
Phoenix Engineering Group
Tampa, Florida

  _____  

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Susan F
Sent: Friday, October 09, 2009 6:57 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Modeling Roofs


I am working on a very complex building where each floor is a different
shape and the floors get smaller as the building gets taller.  This leads to
the need for many partial roofs.  Is there an easy way to do this?  The
geometry is rather complex and if there is a way to accomplish this in the
wizard I would love to know.

Also, does anyone know what the implication would be if I just put a roof
over the entire floor even though technically this is not the case?

Thanks in advance!  

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