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

# Floor of a temporary warehouse [closed]

Hi everyone,

I'm simulating a temporary warehouse on OpenStudio and I'm wondering how I can make a building without a floor. Let me explain, for this simulation I use the existing ground on the site which is concrete. So my temporary warehouse is on the existing ground, there is no insulation or anything else. What parameters should I use to simulate the floor?

edit retag reopen merge delete

### Closed for the following reason the question is answered, right answer was accepted by OlivierC37 close date 2023-01-02 13:20:25.251924

Make a concrete floor then?

( 2023-01-01 13:25:52 -0600 )edit

Yes, but how thick? because if I make a concrete floor that means it's the floor of my building not the outside ground

( 2023-01-01 13:52:07 -0600 )edit

( 2023-01-02 13:17:17 -0600 )edit

Sort by » oldest newest most voted
1. Unless you define soil properties, and/or Site:GroundTemperature:XXX objects (eg Site:GroundTemperature:Surface) it'll assume a constant temperature of 18°C throughout the simulation for any surface in contact with the ground.
2. If your temporary building is sitting on a concrete slab, and it doesn't have another floor of its own, then that slab is its floor (conduction heat transfer goes from ground through that slab to the inside of the zone)
3. If this slab is uninsulated, varying the concrete thickness is almost irrelevant to be honest. Pick whatever, 20 or 30 cm will do.

TL;DR: use a BuildingSurface:Detailed with a Surface Type = Floor and an Outside Boundary Condition = Ground. Assign a Construction corresponding to 20cm concrete.

You can add a Site:GroundTemperature:Surface object to define the monthly temperature for the outside of this surface, and if you don't it'll use 18°C.

more