[Bldg-sim] CAD imports

[Andrew Craig]

Alison---

 

One technique that has worked fairly well for me is to trace the
footprint and zones for each shell in a new layer of CAD.  Then isolate
that layer and use the "copybase" command while selecting a point on the
floor plan that might be shared by subsequent shells.  It usually makes
most sense to pick a point in the southwest corner of the floor plan.
Create a new CAD drawing and paste the copied layer to point (0,0).  Any
other shells that have unique footprints can be traced in their own
layers and pasted into the sheet you just created.   In eQUEST, always
check the box for "specify exact coordinates" and make sure it is (0,0,
correct height of shell).  Then you should have no trouble importing in
your calibrated CAD file.

 

Good luck.

 

Regards,

 

Andrew Craig, EIT,LEED AP/ Mechanical Designer 
INTERFACE ENGINEERING 
direct 503.382.2696 

________________________________

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Alison
Christensen
Sent: Friday, February 22, 2008 5:15 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] CAD imports

 

Hello everyone,

 

I need help on CAD imports into eQUEST.   I would like to be able to
take any CAD file, make a pline line around the perimeter and import
that.   What I am unsure of is if coordinates need to match in CAD and
eQUEST.  What are the prerequisites for importing CAD and not getting
BDL or standard writing file error.  Recently I started a model, which
was not drawn by me in CAD.  The zones weren't matching and when I tried
to multiply floors, I got some serious issues.  Some walls disappeared.
The floors were all off of each other.  Each time I tried to open or
iterate the model more errors showed up.   

 

When you check coordinates in the custom drawing "pad" to make sure they
are on the same point, say (0,0)  (0,80) (80,80) (80,0), to make sure
the floors are right on, what must you do?  Do you have to snap to
polygon and get the coordinates matched?  If one Cad floorplan is in a
different part of the coordinate system than it's underlaying floor,
what should you do?  Do you have to check some part of CAD coordinates,
which I find perplexing.  

 

Has anyone had gliches with this?

 

Thanks, 

 

Bldng sin

 

  <http://www.pae-engineers.com/> 

Alison Christensen 

 

PAE Consulting Engineers, Inc. 



503.226.2921 Main
503.542.0570 Direct
503.226.2930 Fax
alisonc at pae-engineers.com 

Mechanical 

808 SW Third Avenue - Suite 300
Portland, OR 97204-2426
www.pae-engineers.com 

inspire  interpret  integrate 







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