About Assigning Construction Material

[Arch_boston]

Hi,
I am new to IES, so I need some help on this issue.

I added false ceiling to the project construction, then when I selected the room and tried to assign this ceiling to the model. There was no internal Ceilings/Floors option under "Select Category". (just roof, the project has also a green roof so I also created construction material for it) Is there sth wrong with my model or I should assign ceiling to the model from somewhere else?

Thank you very much.

[KasperS]

Hello

If you only have one store, you need to create the false ceiling in the roof layer. The other layer are only used between floors if you have multiple floors.

Kasper