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Input errors in Sketchup Model Leading to Fatal Errors in Open Studio

asked 2016-04-22 15:18:21 -0500

buddy1187's avatar


I'm trying to run my OS simulation but I'm getting a number of severe errors that is blocking me from finishing the run.

The errors are the following

SURFACE Field [Construction Name] is required but was blank SURFACE Field [Zone Name] is required but was blank

Both of these errors appear for twelve surfaces in my model. These twelve surfaces also have errors associated with them in the Sketchup model. The error in Sketchup is:

"The space referenced by this surface does not exist, it cannot be drawn."

I ran the OSM diagnostic script, with no luck in getting rid of these surfaces. I then went into the text editor to find these surfaces and delete them, but I could not find them in the text editor as well.

I'm not sure how to debug these errors at this point, but I cannot run my simulation either because of these errors. Please advise.


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Do the surfaces that are causing the errors appear anywhere when you go into the Spaces->Surfaces tab in the OS application?

Adam Hilton's avatar Adam Hilton  ( 2016-04-22 15:31:16 -0500 )edit

There may be two separate issues. You may have had orphan surfaces, which the diagnostic script should have gotten rid of, and you may also have non-orphan surfaces that don't have constructions assigned.

See if This post on missing constructions helps.

Since orphan surfaces don't below to a space (and as a result a zone) they wouldn't generate the EnergyPlus error you see, because they wouldn't be exported to the IDF file.

David Goldwasser's avatar David Goldwasser  ( 2016-04-22 15:43:24 -0500 )edit

So I went through all of the building surfaces in Open Studio software and I didn't see any of the ones giving me errors listed (I saw gaps in some of my zone surfaces where those missing surfaces would be in).

However, I do see all of these surfaces when I go to the Open Studio Inspector in Sketchup. When I search these surfaces in sketchup, nothing shows up in the model.

Edit: Just to clarify, I have only been working with this model in Sketchup and Open Studio, I have modified anything in the text editor for the OSM file.

buddy1187's avatar buddy1187  ( 2016-04-22 15:59:54 -0500 )edit

If anyone has anytime to look at the osm file, below is the dropbox link to the file:

buddy1187's avatar buddy1187  ( 2016-04-22 17:44:25 -0500 )edit

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answered 2016-04-25 11:44:40 -0500

updated 2016-04-25 12:06:34 -0500

@buddy1187, thanks for the file. Looks like a bug in OpenStudio.

Here is one of the errors, there are many of them.

*** 7298 BuildingSurface:Detailed, *** indicated Name=Surface 1124 *** Only last 3 lines before error line shown..... *** 7299 Surface 1124, !- Name *** 7300 Wall, !- Surface Type *** 7301 , !- Construction Name * Severe * IP: IDF line~7301 Error detected in Object=BUILDINGSURFACE:DETAILED, name=SURFACE 1124 * ~~~ * Field [Construction Name] is required but was blank

When I look at that surface in the OSM, it isn't assigned to a space.

OS:Surface, {5d92114e-4b60-4d27-bd04-3ae0da1b8416}, !- Handle Surface 1124, !- Name Wall, !- Surface Type , !- Construction Name , !- Space Name Outdoors, !- Outside Boundary Condition , !- Outside Boundary Condition Object SunExposed, !- Sun Exposure WindExposed, !- Wind Exposure , !- View Factor to Ground , !- Number of Vertices -9.10818599999998, -2.88764567812905e-015, 4.2672, !- X,Y,Z Vertex 1 {m} -9.10818599999998, -2.88764567812905e-015, 0, !- X,Y,Z Vertex 2 {m} -9.10818599999998, -2.501265, 0, !- X,Y,Z Vertex 3 {m} -9.10818599999998, -2.501265, 4.2672; !- X,Y,Z Vertex 4 {m}

The OpenStudio forward translator shouldn't be writing it out the IDF file unless the surface is in a space, and that space is also assigned to a thermal zone.

After running the Remove Orphan and Unused Resources measure in Apply measure now, those errors went away. The screenshot below showed what surfaces were found. Looking at the diagnostic script in the plugin, it doesn't look for orphan surfaces.

image description

For reference, the next errors I hit once missing construction errors were gone was that the thermal zones don't have any surfaces. Looks like you just need to associate zones in your model with spaces.

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Thank you very much for looking into this for me, works like a charm!


buddy1187's avatar buddy1187  ( 2016-04-26 06:45:37 -0500 )edit

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Asked: 2016-04-22 15:18:21 -0500

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Last updated: Apr 25 '16