Is there a situation, other than a fire pump room, where a sprinkler riser room would be required to have direct access to the exterior?
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9/1/2022 08:00:07 am
When the AHJ requires it.
9/1/2022 08:13:51 am
The local jurisdictions usually will require an exterior door to the riser room if the building is going to be multi-tenant occupied like a retail strip center.
9/1/2022 08:17:01 am
There is no such requirement in NFPA 13.
9/1/2022 08:38:13 am
As far as I know, there is no such requirement within NFPA 13. As others stated above, its good practice.
9/1/2022 08:41:37 am
I find this extremely ironic because a fellow designer asked me this exact question yesterday and did not make this post himself. In his situation, the riser is being proposed to be installed inside an interior janitor's closet.
9/1/2022 08:41:42 am
i tell my architect clients its required.
9/1/2022 08:43:06 am
Great question. This is one of those that you find a designer that's been on the job 1 day asking about, but also someone that may have been designing for 30 years not really understanding. They just know what certain AHJs want and/or follow the design intent and civil drawings. It also is one of those items that doesn't get coordinated very well between civil engineer and mechanical engineers sometimes.
9/1/2022 08:47:37 am
Every situation for every AHJ in the Austin, Texas metro area. Every riser room must have direct exterior access.
9/1/2022 10:50:59 am
In my area it is as others have said, it depends on he AHJ. As I assist the architect in design development, it is one thing I have to know or confirm. Whether it is written in the city or county ordinance or not, many of my local AHJ's require outside access or an outside PIV (sometimes a minimum distance from the structure). Some require both. Some require neither. One large local city is even okay if the riser located in the basement. I also make sure the architect keeps my riser room at an exterior wall so as not to exceed the 10-ft. maximum of underground, and to allow discharge of main drains if they are to be directed to the exterior..
9/1/2022 11:58:36 am
In our jurisdiction, most if not all of the buildings are schools. All of the fire risers rooms are designed/built with direct access to the exterior of the buildings per contract documents.
9/6/2022 01:57:17 pm
You can use the International Fire Code 2018 Edition section 504.1 required access exterior doors and section 509.2 Equipment access to get an approved exterior door for the sprinkler riser room.
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