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We have an existing building were the highest occupied floor is less than 30'-0 above fire vehicle access. This building is being renovated. Part of the renovation involves the construction of a new building to be connect to the existing building. The new building is higher than 30'-0 above fire vehicle access. The exit stairwells in the new building need a standpipe system.  Does the existing building need a standpipe system since it is connected even though the existing building stairways and floors are not higher than 30'-0 above fire vehicle access?
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7 Comments
Rusty Scott
10/28/2020 10:18:31 am
Is there a rated separation between the new vs old? Is the existing water supply the source for the new building?
Thomas G Jones III
10/29/2020 01:45:04 pm
There is a hallway that communicates through both buildings. The hallway is rated for 1 hour but there is no separation between the taller and lower building.
sean
10/29/2020 08:46:16 pm
so it sounds like they are one building per the IBC as there is no firewall separating them. In that case my gut says yes, but don't have a particular code section without some research.
Jess L.
10/28/2020 10:21:45 am
Is it considered 1 building per the building code and fire code? If yes, then every egress stair will need a standpipe, even in the 3-story portion.
Josh Gilliam
10/28/2020 10:24:10 am
I would say it depends. Is it going to be manual or automatic? Will you need a pump?
Casey Milhorn
10/28/2020 10:37:33 am
We have ran into this exact situation before several times. A couple times, we were not made to go back with standpipes for the old stairwells under 30'. One other time we were made to. That tells me it probably is a jurisdictional decision. I would love to see some actual code reference for this situation if anyone has something to reference to. Also, if you are a subcontract, definitely put it back on the design team to make the call, and offer to assist with the fire marshal or codes if you have a good relationship with them. If you are on the design team side of things, definitely do your homework on applicable codes and then discuss with the AHJs before making the call. Remember, the fire fighters are the ones that ultimately are affected by this when they respond to a fire in the building. If they want them, and they have the authority to request them, then I wouldn't fight it when peoples lives may be on the line. IMHO.
Jonathan Joseph
10/28/2020 01:20:51 pm
If there is no egress between the buildings and is separated by a rated stairway shaft then I would have two systems in this case and probably two identified addresses for the fire department to locate the FDC's properly. Leave a Reply. |
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