[Bldg-sim] ecotect - analysis grid on multiple surfaces

Osser, Roselin ROsser at Vanderweil.com
Wed Jan 14 11:45:46 PST 2009


Hi Ramana,

 

I think I know what you are trying to do; you are trying to get images
such as these:

 

http://ecotect.com/products/ecotect/features/solar

 

I was also struggling with this and now I believe the key is that you
*do not* use the Analysis Grid at all.  Instead of calculating incident
solar radiation for the Analysis Grid after stretching it over a
surface, you calculate it for Selected Surfaces under the "What should
values be calculated for?" dialogue in the Solar Access Analysis wizard.
Before you do this, however, you need to break up the surface using the
Surface Subdivision module.  You select the building and then go to
Modify, Surface Subdivision, Rectangular Tiles.  This should allow you
to calculate radiation over a whole surface without worrying about
stretching the grid.  There seems to be a limit as to how far around
something the grid can be stretched with the 3D Form Fit option. 

 

Hope this helps,

 

Roselin Osser, LEED AP

Green Initiatives Group

R.G. Vanderweil Engineers, LLP

T 617.956.4461 | F 617.423.7401 

 

________________________________

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Ramana Koti
Sent: Wednesday, December 17, 2008 3:31 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] ecotect - analysis grid on multiple surfaces

 

Dear all,

Has anyone tried assigning analysis grid to multiple surfaces with
different orientations/tilt angles (roofs and walls) at once to do the
incident solar radiation calculation in Ecotect? I have not been able to
do it well in my first few attempts. I've noticed that a single surface
with analysis grid assigned works fine.

Thanks,

RAMANA KOTI  Assoc. ASHRAE LEED(r) AP 
Sustainable Building Analyst

ELEMENTS division of BNIM architects
106 West 14th Street Suite 200
Kansas City Missouri 64105

d 816.783.1635 f 816.783.1501
bnim.com | elements.bnim.com 

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