Good morning,
I hope this question finds you well.
I have a little red cross next to the internal floor and internal ceiling surfaces for my ground floor and first floor 'adjacent' rooms. What is the reason for this and will it prevent me performing calculations? (I haven't got round to performing calculations yet)
Clearly a ceiling to one room is an internal floor to the one above. Does the construction type of the ceiling have to be the same as the internal floor?
Lets say I define the internal floor construction for the first floor room as [outside] plaster/concrete/screed/ceramic tiles [inside] (this would account for the ceiling below as well in my case), the ceiling construction for the room below should be nothing as I've defined the entire floor/ceiling combo within the internal floor above? If I had the internal floor as [outside] concrete/screed/ceramic tiles [inside] and the ceiling construction below as just plaster, does the software combine the U values of the internal floor and ceiling?
With partition walls it makes sense as the partition wall for each adjacent room is the exact same construction type and it is a 'common surface', by that logic, do I have to have the same construction type for the internal floor and ceiling for it to be shared correctly as a common surface? If they're defined the same is this what would make the red cross disappear?
Hopefully this makes sense, your help would be greatly appreciated.
I've just seen the error message saying the layers aren't mirrored, it follows that the ceiling and internal floor construction types need to be identical, may have answered my own question there.
Hi John,
Good morning, yes indeed that is correct - the surfaces between rooms must be consistent in both directions. You can find guidance on this in the below Wiki articles:
"Construction between this and the corresponding adjacent surface do not have their layers mirrored" Error - OpenBuildings | AECOsim | Speedikon Wiki - OpenBuildings | AECOsim | Speedikon - Bentley Communities
Internal Ceiling and Floor Construction Mirroring - OpenBuildings | AECOsim | Speedikon Wiki - OpenBuildings | AECOsim | Speedikon - Bentley Communities
If you have any other queries just let us know.
Shane Regan | Principle Building Performance Support EngineerHevacomp to OpenBuildings - A complete guide for every user | Bentley Communities
Answer Verified By: John Hastings