Question-and-Answer Resource for the Building Energy Modeling Community
Get s tarted with the Help page
Ask Your Question
3

How do I get overhang/fins shading surface in unique shading group from context/ground shading objects?

asked 2018-09-03 14:07:34 -0600

bwelle gravatar image

updated 2018-09-04 08:50:55 -0600

When importing a gbXML file, I have many different shading surfaces. Some are fins, overhangs, adjacent buildings and ground. All have unique shade surfaceIDs, and unique names. I want to try to get all the fins and overhangs assigned to "Building" shading group and Adjacent Buildings and Ground to "Site" shading group so I can assign constructions and cost objects only to the Building Shading. How can I do this? Attached is the gbXML file that I'm importing.

Attached are images of gbXML and here is the link to download:

https://perkinswill.box.com/s/5xx8jm6...

Capture.PNG

Capture2.PNG

Here is an image of what it looks like once imported to OS:

Capture3.PNG

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
2

answered 2018-09-03 15:59:15 -0600

First, I want to point out that shade surfaces assigned to the "Building" category will rotate with the entire building, i.e. you set the Building's North Axis input field to something other than zero. Shade surfaces assigned to "Site" category will NOT rotate with the entire building -- they stay fixed no matter what orientation you set in the North Axis input field.

If you still want to separate shade surfaces into "Building" vs. "Site", read on. From your Capture3.PNG, it looks like all 15 shade surfaces are assigned to the "Building" category. The gbXML file doesn't have a parameter to set the "Building" vs. "Site" category -- this is only an OpenStudio construct, and so must be altered in the OpenStudio input file ending in OSM. If you want the 6 adjacent and ground shade surfaces at the bottom of that Capture3.PNG to be assigned to the "Site" category instead, you'll need to make a new Shading Group in the OSM first, and then move the 6 shade surfaces from the existing Shading Group to the new Shading Group. This will be easier to do in the SketchUp plug-in for OpenStudio using cut / paste processes rather than in the OpenStudio application.

You can read more about shading in OpenStudio in other posts here and here.

edit flag offensive delete link more

Comments

Great, thanks Aaron. We are are developing a fully automated process from gbMXL to OSM to OS server from a web GUI so there is not manual intervention. Looks like it would be best to do the post-processing of the OSM with a measure to reassign shading surfaces. Thanks!

bwelle gravatar image bwelle  ( 2018-09-03 17:43:47 -0600 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

 

Question Tools

1 follower

Stats

Asked: 2018-09-03 14:07:34 -0600

Seen: 124 times

Last updated: Sep 03 '18