Good day folks,
Long time reader, first time poster so please forgive me if I am putting this in the wrong place or if this information has been covered before. Did a search but couldn't find anything.
I am currently working on a tenant improvement project in a 3 story building. The stairs were never rated. We are replacing the doors and the walls are cmu, so no issue there, but I am struggling with the roof/ceiling assembly. The problem is that I don't know what the roof assembly is between the steel deck and the single ply membrane. Every UL assembly I can find requires gyp or cement board over the the steel deck. Anyone aware of a 1-hour assembly that does not require this?
What I know about the assembly is: 3' steel trusses @ 60" O.C., 1 1/2" steel deck, some amount of some kind of insulation, and single ply membrane.
The building is 3- story, 34,000 sf, B & A-3 Occupancy (non-seperated)
Thank you for any help! (and for all the help I have found in the past!)
Long time reader, first time poster so please forgive me if I am putting this in the wrong place or if this information has been covered before. Did a search but couldn't find anything.
I am currently working on a tenant improvement project in a 3 story building. The stairs were never rated. We are replacing the doors and the walls are cmu, so no issue there, but I am struggling with the roof/ceiling assembly. The problem is that I don't know what the roof assembly is between the steel deck and the single ply membrane. Every UL assembly I can find requires gyp or cement board over the the steel deck. Anyone aware of a 1-hour assembly that does not require this?
What I know about the assembly is: 3' steel trusses @ 60" O.C., 1 1/2" steel deck, some amount of some kind of insulation, and single ply membrane.
The building is 3- story, 34,000 sf, B & A-3 Occupancy (non-seperated)
Thank you for any help! (and for all the help I have found in the past!)