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Deleting degenerate surfaces in OpenStudio

asked 2015-07-22 15:29:39 -0500

dr_orear's avatar


After running my simulations in OpenStudio, the error messages are telling me I have 24 degenerate surfaces. How do you identify these surfaces in OS and remove them?


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answered 2015-07-22 15:34:08 -0500

updated 2015-07-22 15:35:44 -0500

What I would do is:

Export your model to an idf file. Open it with IDF editor and, add a "Output:Diagnostic" object and set it to "DisplayExtraWarnings". Run the simulation and look at the ".err" file. It will tell you which surfaces are degenerates. Then, go back to Sketchup or to your ".osm" file and delete them.

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@DavidGoldwasser, @DanMacumber, is there no measure for this?

__AmirRoth__'s avatar __AmirRoth__  ( 2015-07-22 15:35:37 -0500 )edit

This is the measure to add Output:Diagnostic objects to a model.

ericringold's avatar ericringold  ( 2015-07-22 15:41:14 -0500 )edit

The diagnostic script in the SketchUp Plugin user scripts does this. Set both arguments to true to remove small surfaces. Not in measure yet :(

David Goldwasser's avatar David Goldwasser  ( 2015-07-22 17:17:01 -0500 )edit

Why does it happen ? Almost all my interior surfaces are degenerate, either with missing surfaces or with extra lines in it, and I have to redraw them manually.

Raghda Derbel's avatar Raghda Derbel  ( 2018-08-03 08:57:52 -0500 )edit

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Asked: 2015-07-22 15:29:39 -0500

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Last updated: Jul 22 '15