We have a 40-foot tall steel construction building, with lumber strapped and stacked, stored in 20-foot high solid piles.
The building is unheated. The building owner has been told by another fire sprinkler contractor that this will require ESFR sprinklers. The owner would prefer a dry pipe system. We have researched NFPA 13, 2019 edition. It looks as if Chapters 20 and 21 will allow a dry pipe system for this application using CMDA sprinklers. Anyone else have experience with a scenario like this? What path would you recommend? Sent in anonymously for discussion. Discuss This | Submit Your Question | Subscribe
4 Comments
Franck
2/15/2021 10:57:36 am
The issue may come from the height of the building and the clearance between the top of storage and building roof.
Reply
Jesse
2/15/2021 01:21:43 pm
Back in the day, I inspected a lot of forest products workers for insurance. 2016 NFPA 13 Table A 5.6.3.3 notes storage of dimensional lumber as a Class III Commodity. So you can protect it as you would any C-III. Dry ESFR is relatively new to our world, so pay attention to 13s restrictions and allowances.
Reply
Bubaface
2/18/2021 06:11:55 am
Thanks for the input!
Reply
Jesse
2/18/2021 11:32:50 am
You got it!
Reply
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