We have a project that is a retail tire store. In the back, there is a Tire Storage Room with a mezzanine of open grate flooring that takes up the majority of the floor plan for the room. The top of the open grate flooring is roughly 10-ft and the top of the roof decking is about 11-ft above the mezzanine.
Tires are stored on racks on both levels. I think that CMDA sprinklers are the only real solution here because of the clearance to storage requirements. But, if we tried to use CMDA or ESFR, the owner would have little usable storage height. Can anyone think of another good solution? We have FP plans as part of the bid documents, and they specified something that won't work, so we kicked back an RFI for clarity, but we thought it would make good discussion here.
5 Comments
Peter Howard
8/20/2024 06:49:35 am
If you're worried about storage height, I would say CMDA is your best shot as long as it's single row racks and you have the water to go extra hazard group 1 as per table 13.2.1 (NFPA 13 2016 edition).
Reply
Todd E Wyatt
8/20/2024 08:35:14 am
From NFPA 13-2019's "Enhanced Content" for 23.8 ESFR Protection of Rack Storage of Rubber Tires :
Reply
Todd E Wyatt
8/20/2024 08:39:26 am
From NFPA 13-2019's "Enhanced Content" for 21.6 Control Mode Density/Area Sprinkler Protection Criteria for Rack Storage Rubber Tires.
Reply
Dan Wilder
8/20/2024 09:02:42 am
As to the storage height and clearance, running sprinklers down each row, and offsetting sprinklers between rows to avoid cold solder is one approach. The other is a baffle.
Reply
Jack G
8/20/2024 06:09:49 pm
oh 2 systems are not permitted for tire storage any more. NFPA 13 2022.
Reply
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