Basement sprinkler regulations

maryk · May 2011

We are looking to build wire cage storage units in the basement of our 16 unit condo building (not new construction). There is a sprinkler system in this portion of the basement and I've heard that any "construction" must be 18" below the sprinkler heads. The sprinkler heads would not end up being IN the cages, but would be in the "alleyways" - but would still need to be 18" above the top of construction. We would like to build the cages to the ceiling but this throws off our plans. It's really hard to find out what the actual building regulations are. Can anyone spare any knowledge, or suggest where to look for definitive NYC codes (even the "codes" we've found are not that specific, or we don't know if they are the ACTUAL codes). The vendor/builder does not want to commit (i.e. be responsible) for advising us in this area.

Thanks!

whynot_31 · May 2011

while you MAY find someone who can answer your request on Brooklynian, I would strongly suggest you ask you question in the Forum section at Brownstoner.com

...they have been very helpful to me in the past.

catwalkertexasranger · May 2011

There is no such thing as an alley way for humans. Cars and trucks use them. Egress is for us. The 18 inches is a general rule for NY building code. The main objective is to create cages that are not enclosed structures to water. No wood or dry wall. Dry wall is not fire rated unless it is taped(spackle the joints) If it is a mesh material it normally will comply w the code. Rule of thumb is if the sprinkler is deployed will the contents of the cage get wet along with everything else in the instant the the head goes. If you frame it and use dry wall or another material you will need to sprinkle the inside of the unit.

Some basements and parking areas have what is called a dry system. It looks and acts exactly like a wet sprinkler pipe. The difference is that dry system is that the pipes are empty and are supervised w air pressure. Basically a air pressure gauge that ensures that the pipe has no leaks, when the heat make the head deploy water is released into the pipe. Same as wet only it doesn't freeze in the winter in poorly or non heated areas.

If you get the city involved, you and your condo mates w be screwed. Hire a good contractor that installs wire cages all over the city and leave the government out of you basement storage project.

You may need additional lighting, for general safety and so that emergency exit signs are visible from the newly formed corridors the cages will create

Basement sprinkler regulations

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