Question-and-Answer Resource for the Building Energy Modeling Community

Ground Plane extension size for daylighting analysis

asked 2021-11-05 03:07:15 -0600

Elin
201 ●3 ●7

updated 2022-02-06 12:07:22 -0600

__AmirRoth__

4436 ●5 ●17 http://bleedinggreenna...

Hello, I'm using DesignBuilder-Radiance for daylighting. I wanted to know how we can calculate the ground plane size when we want to perform a daylighting analysis. Is there a rule of thumb for that? Thank you

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2021-11-07 10:44:01 -0600

GregWard

1203 ●6 ●5 http://www.anyhere.com/gward

I don't know that there's a good rule of thumb, but in general your ground plane should be large enough to capture any significant shadow cast by your building and adjacent structures. So, if your ground plane extends 4 times the height of your tallest structure beyond the bounds of your building, you are probably OK.

edit flag offensive delete link

Comments

Thanks a lot for your help.

Elin ( 2021-11-07 13:07:14 -0600 )edit

add a comment

Your Answer

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

Add Answer

Training Workshops

Careers

Question Tools

1 follower

Stats

Asked: 2021-11-05 03:07:15 -0600

Seen: 110 times

Last updated: Nov 07 '21

Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The Unmet Hours and Big Ladder names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the Creative Commons Attribution Share Alike 3.0 License.

Ground Plane extension size for daylighting analysis edit