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

# Geometry - FloorspaceJS - a WALL with 2 materials

Hello, I want to model a building. The walls have two different materials (A and B). I don't see any option in FloorspaceJS to implement that criteria. ! I don't have two different boundaries. I have a wall with different materials! (Metal and wood.) is there a way to do that ion geometry tab?

edit retag close merge delete

1

Correct me if I'm wrong, @payam: I believe this is a follow-up to this question, where you sought to have 2 vertically-aligned walls at grade. Here, you're after 2 vertically-aligned walls entirely above grade (eg 3rd floor space), right? If so, I would rephrase your title and question, eg: "FloorspaceJS : How to define 2 (vertically-aligned) walls in a space", ideally with a rudimentary cross-section of what you're after. You can then apply @Alfonso 's suggestion.

( 2024-01-09 06:42:44 -0500 )edit

Sort by ยป oldest newest most voted

@payam, this video shows how to create custom constructions in OpenStudio: https://youtu.be/_tN3scXakiM?si=prE48...

If the materials are sandwiched, it is a simple matter of applying them in series on the Constructions tab. Then, assign the Construction to the appropriate Construction Set category (for example, Exterior Surface Constructions - Walls).

If your wall has different materials/constructions at different locations, you will need to use SketchUp to draw a dividing line on the wall. Alternately, you could create a very small jog in the wall using FloorSpaceJS. This would be the same as creating two different wall surfaces. Then, you can hard assign the appropriate Construction on the Spaces left tab>Surfaces upper tab: https://youtu.be/hOfMFtyfehQ?si=hUvOJ...

more

Thank you for your time and consideration.

( 2024-01-12 14:51:00 -0500 )edit

My understanding is that FloorspaceJS is primarily a means to define geometry and assign spaces, thermal zones, and components to the geometry. You can define construction sets, but defining what an 'exterior wall' is made up of within a construction set must be done in OpenStudio. I am assuming you are attempting to use OpenStudio based on the post tagging. Uploaded a few screenshots to hopefully help:

Example of defined construction set called 'ConstSet_Office':

Then have a space type called 'SpaceType_Office' which uses 'ConstSet_Office' as the default construction set:

Then define the space type within FloorSpaceJS; in this example, all spaces are defined as 'SpaceType_Office'. Because 'ConstSet_Office' is the default set for that space type, all spaces defined as such use that set:

more

Thanks for your time. Thats Correct, but what if your space office exterior wall has two different materials? As i figured it out i have to define two spaces for one room, is there other way? i used to work with sketchup, in that u had an option to split one exterior wall of a space to two portion.

( 2024-01-09 09:24:48 -0500 )edit
1

You're welcome. I am a bit of unsure of your question so I will try to answer both interpretations: If you need to represent two sections of exterior wall that are made up of different material sets, then yes, you would need to partition the building and can use different space types or override the construction sets of those partitions accordingly. If you need to represent exterior walls made up of two materials, the above example performs this. The exterior wall defined is made up of several layers of different materials defined in the 'Constructions' tab of the 'Constructions' section.

( 2024-01-09 10:37:06 -0500 )edit