TimNY
REGISTERED
Whether one is required depends, or whether more than one is required depends?cda said:
Tim
-
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Existing elevator shaft not to code?
- Thread starter Coder
- Start date
Tim
What edition of nfpa 13, if adopted, and what is in the shaft
8.15.5.3 Automatic fire sprinklers shall not be required in elevator machine rooms, elevator machinery spaces, control spaces, or hoistways of traction elevators installed in accordance with the applicable provisions in NFPA 101, or the applicable building code, where all of the following conditions are met:
(1)
The elevator machine room, machinery space, control room, control space, or hoistway of traction elevator is dedicated to elevator equipment only.
(2)
The elevator machine room, machine room, machinery space, control room, control space, or hoistway of traction elevators are protected by smoke detectors, or other automatic fire detection, installed in accordance with NFPA 72.
(3)
The elevator machinery space, control room, control space, or hoistway of traction elevators is separated from the remainder of the building by walls and floor/ceiling or roof/ceiling assemblies having a fire resistance rating of not less than that specified by the applicable building code.
(4)
No materials unrelated to elevator equipment are permitted to be stored in elevator machine rooms, machinery spaces, control rooms, control spaces, or hoistways of traction elevators.
(5)
The elevator machinery is not of the hydraulic type.
8.15.5.4* Automatic sprinklers in elevator machine rooms or at the tops of hoistways shall be of ordinary- or intermediate-temperature rating.
8.15.5.5* Upright, pendent, or sidewall spray sprinklers shall be installed at the top of elevator hoistways.
8.15.5.6 The sprinkler required at the top of the elevator hoistway by 8.15.5.5 shall not be required where the hoistway for passenger elevators is noncombustible or limited-combustible and the car enclosure materials meet the requirements of ASME A17.1, Safety Code for Elevators and Escalators.
8.15.5.3 Automatic fire sprinklers shall not be required in elevator machine rooms, elevator machinery spaces, control spaces, or hoistways of traction elevators installed in accordance with the applicable provisions in NFPA 101, or the applicable building code, where all of the following conditions are met:
(1)
The elevator machine room, machinery space, control room, control space, or hoistway of traction elevator is dedicated to elevator equipment only.
(2)
The elevator machine room, machine room, machinery space, control room, control space, or hoistway of traction elevators are protected by smoke detectors, or other automatic fire detection, installed in accordance with NFPA 72.
(3)
The elevator machinery space, control room, control space, or hoistway of traction elevators is separated from the remainder of the building by walls and floor/ceiling or roof/ceiling assemblies having a fire resistance rating of not less than that specified by the applicable building code.
(4)
No materials unrelated to elevator equipment are permitted to be stored in elevator machine rooms, machinery spaces, control rooms, control spaces, or hoistways of traction elevators.
(5)
The elevator machinery is not of the hydraulic type.
8.15.5.4* Automatic sprinklers in elevator machine rooms or at the tops of hoistways shall be of ordinary- or intermediate-temperature rating.
8.15.5.5* Upright, pendent, or sidewall spray sprinklers shall be installed at the top of elevator hoistways.
8.15.5.6 The sprinkler required at the top of the elevator hoistway by 8.15.5.5 shall not be required where the hoistway for passenger elevators is noncombustible or limited-combustible and the car enclosure materials meet the requirements of ASME A17.1, Safety Code for Elevators and Escalators.
IJHumberson
SAWHORSE
From what you've described, and only being able to get to the walls from within the shaft, the 1-hour shaftwall arrangement like in the link Mark Handler posted would be what I would recommend (the 1-hour, UL-U415 on page 14). It meets the requirement for 1-hour rating (from both sides) and can be constructed from one side (within the shaft) - and it likely would not be very much difference in cost from what the original construction was since it's a relatively small area (elevator shaft) and only 3 floors. The original construction was not correct - but that's no excuse to allow it to be reconstructed wrong again - especially when there are easily constructed code compliant solutions.
Frank
REGISTERED
With 2 layers on the inside of the shaft and one on the opposite side the 1 hour rating is easily achieved. If the insterstitial space is fireblocked with nominal 2x lumber it is equivalent to the one layer of 5/8 drywall
If the wall and floor framing framing surrounding the shaft is comprimised it does not matter about what the shaft does--thinking of Masonary elevator shaft standing in the middle of the rubble of a 3 story hotel that burned to the ground during construction. Shaft still there but once the surrounding building is gone who cares.
see 721.6 2009 IBC
If the wall and floor framing framing surrounding the shaft is comprimised it does not matter about what the shaft does--thinking of Masonary elevator shaft standing in the middle of the rubble of a 3 story hotel that burned to the ground during construction. Shaft still there but once the surrounding building is gone who cares.
see 721.6 2009 IBC