Without seeing a floor plan. A little hard to call
A few reasons maybe
1. Door is part of a rated assembly
2. Door is part of enclosed rated stair
3. Stop the spread of fire from one floor to another
4. Other reasons
Does the door swing in direction of travel to an exit?
It is something
Without seeing it on site. A little hard to make a call
Can you place sprinklers around the perimeter, far enough away, to spray under???
Do you know how old the install is?
Do you turn this in to the ahj or whoever regulates sprinklers?
A red tag goes directly to the ahj within 24 hours in the state I am in.
I wonder if some ahj approved it?????
Do you know how long it has been there???
I wonder who did the underground???
Have the osy ever been turned on ?
Is it in the shop area also? Can you post a few pictures
You sure his brother in laws fire sprinkler company did not do the work??
Thank you for the response.
I agree not your job to decide which system.
My question was more to field adjustments.
I understand in the picture situation, a sprinkler company would not install the ceiling, but they might have to adjust the sprinkler.
Being an ex ahj, I would see obvious...
Sprinklerdesigner2
I totally understand your position on not designing.
On the sprinkler side,, Would you bring the condition shown in the op picture,
To the GC, or some other person up the line??
Just wondering what your approach would be.
Thank you
NFPA 13
Sorry do not have the book, readily available
So
1. Install per manufacture instructions
2. Install per listing, the cvpc you need the specific brand, but most if you get the entire install instructions,,, up front the listing says pipe cannot be installed bare,, must have...
Yes for several reasons
1. To help the sprinkler activate
2. So the fire and smoke does not extend into the unprotected area, at the top
3. The cvpc normally has to be protected, normally by drywall
So yes add the ceiling
I am guessing it does not have to be fire rated. So fit it in as best...
Here is one
. AGF recommends installing Model 7900AAV near the high point of the system, at the end of branch lines, and on top of supply risers.
https://agfmfg.com/purgenvent/air-venting-valves/7900aav/
Read the instructions for the one you might use