Post intersection area does not match

asked 2022-01-14 13:52:36 -0500

AndyL's avatar

updated 2022-01-14 14:54:40 -0500

I'm still pretty new to openstudio application and I keep coming across this error while building the model. Whenever I try to merge with the current osm file, multiple errors show up saying something like "initial area of surface 'Surface 32' 1.90104 does not equal post intersection area 1.86979". The closest to my situation that I could find is and this issue was apparently fixed in v1.2.0, which is the version I'm using and encountering this error on. One thing that I've noticed was that surfaces on the lower floors would sometimes break up into smaller surfaces when I add a new space on top, with new edges extending to that space. Does anyone know what exactly is going on and how to resolve it? Thanks.

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It sounds like you are using FloorspaceJS to draw your geometry is that correct? Do the floorplans line up between the floors of your building? It sounds like they do not and OpenStudio is trying (but failing) to calculate the intersections of surfaces between floors. My suggestion would be to try to simplify the geometry so it lines up as much as possible in FloorspaceJS. If you need very detailed/complex geometry you can use the OpenStudio SketchUp Plug-in.

macumber's avatar macumber  ( 2022-01-15 13:11:55 -0500 )edit

You could also try OpenStudio Application version 1.3.0 to see if the behavior is any different.

macumber's avatar macumber  ( 2022-01-15 13:12:31 -0500 )edit

Hmm, I think that could be the issue. Yes, I'm using FloorspaceJS to draw and I've noticed that the floorplans weren't lined up quite right, though I didn't think much of it at the time since the difference was very slight. I'll give it a shot, thanks for your help!

AndyL's avatar AndyL  ( 2022-01-16 15:01:17 -0500 )edit