Mixing quick response & residential sprinklers in 13R
Mixing quick response & residential sprinklers in 13R
(OP)
I have a small residential building with sprinkler designed per NFPA #13R.
With the exception of a single sitting room all sprinklers outside the dwelling units are at 8'-0" but the sitting room (requires three sprinklers) has a vaulted ceiling that goes up to 13'-5" AFF and, since it is outside the dwelling unit, regular quick response sprinklers need to be used.
See image.
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There is not a lintel between the vaulted ceiling sitting room and corridor... just an open passageway.
I don't think there is a problem mixing heads in this manner but I wanted to check here first.
Calculations? Three heads in the corridor (there are only three) and one or two in the sitting room?
TIA
With the exception of a single sitting room all sprinklers outside the dwelling units are at 8'-0" but the sitting room (requires three sprinklers) has a vaulted ceiling that goes up to 13'-5" AFF and, since it is outside the dwelling unit, regular quick response sprinklers need to be used.
See image.
ht
There is not a lintel between the vaulted ceiling sitting room and corridor... just an open passageway.
I don't think there is a problem mixing heads in this manner but I wanted to check here first.
Calculations? Three heads in the corridor (there are only three) and one or two in the sitting room?
TIA





RE: Mixing quick response & residential sprinklers in 13R
RE: Mixing quick response & residential sprinklers in 13R
The corridors are rated separating the dwelling units but there is not any separation between the sitting room and corridor. I propose residential sprinklers for the corridor with quick response for the sitting room.
I think it is alright but something is bothering me about it. I suppose at worst case I could use extended coverage quick response sprinklers for the corridor but that would up my pipe size a bit. Lousey water and all theya re already two big.
PS The 1/2" shows up in the transfer as 1`. Most of the pipe you see is already 1 1/2" just because we had a lot of it in the shop we want to use up.
RE: Mixing quick response & residential sprinklers in 13R
RE: Mixing quick response & residential sprinklers in 13R
Yes.
Georgia allows 13R systems in assisted living facilities.
RE: Mixing quick response & residential sprinklers in 13R
RE: Mixing quick response & residential sprinklers in 13R
Might be able to feed sidewalls from south end of south sleeping rooms instead?
RE: Mixing quick response & residential sprinklers in 13R
As close to Florida as you can get without actually being in Florida. I got aligators living within a half mile of my house so it doesn't get that cold. Lowest January temperature I've seen is 27 Deg. and that extreme cold last only a few hours at most.
I doubt attic pipe would freeze but it's standard we still cover pipe with batt insulation. Checking records our all time recorded low was down into the teens.
RE: Mixing quick response & residential sprinklers in 13R