We have submitted plans for a new shoe store in an existing mall. The entire space is about 4,400 sqft and the stock room is 840 sqft with full-height walls.
The plans reviewer is requiring us to revise and resubmit using the calculation method in NFPA 13, 2016 Edition, citing Section A.184.108.40.206.
We are coming up short and the main (distribution pipe) is limited to 6".
Does this requirement seem reasonable?
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1/3/2022 07:32:14 am
I'm under the assumption that Room Design was the original hydraulic approach (I don't see an annex section for 220.127.116.11)? Does the space comply with the Room Design approach as defined in 18.104.22.168 & 12.10?
1/3/2022 08:02:38 am
A little more information is needed to give a complete, definitive response/advise.
1/3/2022 08:13:54 am
What is the design density you are shooting for in the shoe storage area. Since many of these contain expanded plastics, you may be hitting the criteria for EH2. I have seen this many times in shoe stores. It is quite the challenge for a typical OH2 shell design. However, if you don't meet the criteria for room design, then you would need to extend past the walls and get the proper design area.
1/3/2022 08:15:25 am
More information is required. Is there a fire rated separation between the spaces? What was originally submitted to the AHJ for approval?
1/3/2022 08:20:57 am
Any mercantile space will be OH2 minimum, I'm assuming this store room has storage less than 12' high. So you'd be looking at similar hazard. Even if you are using room design the sales floor should require the same density over the whole floor thus the 1500 sq ft would be best used in this scenario.
1/3/2022 09:02:38 am
Very common approach having the stock room designed utilizing the room design method. Make sure its clearly shown that the room is rated. Shouldn't be a problem if the information is portrayed correctly.
1/3/2022 09:03:52 am
You're in a tough spot.
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