Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
1

Draw and set an Overhang.

asked 10 years ago

Antop's avatar

Hi, I have created (in sketchup) a shading surface group , one per each external surface ,on the external windows.

I would like that this surfaces becomes an overhang. But in OS i see only a group of surfaces, i need an object.

How can I do? Do I have to use energy+?

Thanks A.

Preview: (hide)

3 Answers

Sort by » oldest newest most voted
1

answered 10 years ago

updated 10 years ago

In OpenStudio all surfaces in a shading group will be translated as detailed site, building, or zone shading surfaces. You can't directly create "Shading:Overhang" or "Shading:Overhang"Projection" objects. The same is true for "Shading"Fin".

You can mimic some of the functionality in OpenStudio, for example using the a user script in the SketchUp Plugin to add overhangs by projection factor, or you could also add the objects as part of an EnergyPluse measure.

Just out of interest, what is your specific use-case for wanting an "Shading:Overhang" vs. a "Shading:Zone:Detailed" object. Just for some background, EnergyPlus has a number of ways to make surfaces (shading, sub, and base). We made a decision early on to just support they highest fidelity option. We thought this would give the most flexibility. Even the legacy plugin that just works with IDF files converts everything to detailed surfaces when you open it in the SketchUp Plugin.

Preview: (hide)
link
1

answered 10 years ago

I think in your case you should definitely check out the measure David mentioned, which is called "Add Overhangs by Projection Factor".

Preview: (hide)
link
1

answered 10 years ago

Antop's avatar

thanks for your reply.

I am attending a parametric design with Je+. In Je+ I can modify the idf file applying a list of value per each parameter that I consider. In this case, I have to vary the overhang's depth. Into idf file I have not the overhang as a object but a several groups of shading surfaces and for these I can't vary the depth.

So, I have drawn the model in sketchup, then I have setted the schedule and other in OS, now I have to define the parametric design, but I need to e+ to adjust some variables.

Preview: (hide)
link

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: 10 years ago

Seen: 947 times

Last updated: Dec 15 '14