I believe that if you go back a few editions parking garages were Ordinary Hazard GrI and most Apparatus Bays were also listed as OHI but in the new editions of NFPA 13, I'm not sure which edition it changed in, parking garages are now listed as Ordinary Hazard GrII.
The requirement for the Apparatus Bau to be OHI is probably an old specification brought forward and hasn't been updated to OHII Thanks Brett Peters General Manager Installation & Design Proudline Fire Protection Services Ltd. [email protected] 780 490 7602 office ext 202 780 490 7605 fax 780 777 0568 cell 780 718 2676 24h Visit us at www.proudline.ca On Wed, Oct 8, 2025 at 1:17 PM Parsley Consulting <[email protected]> wrote: > Having a bit of confusion. > > A project is to follow the 2022 edition of NFPA 13. > > The apparatus bays of a fire station have been designated on the plan as > ordinary hazard, group 1. When I look at the examples in §A.4.3.3.2, it > seems to me that those spaces would be similar to (2) "automobile parking > garages", or (14) "machine shops", or (24) "repair garages." This would > make the space similar to ordinary hazard group 2, which increases the > required density from 0.15 gpm/ft² to 0.20 gpm/ft². > > Am I looking this incorrectly? Any help greatly appreciated. > > sincerely, > -- > *Ken Wagoner, SET* > > > *Parsley Consulting 3002 Younger Drive Harrisonville, Missouri 64701-3909* > *Phone: (760) 745-6181 * > > *Visit the website > <https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.parsleyconsulting.com%2f&c=E,1,Y5zKJKPEh1mBEBqSR-VE9cUKl5y-eyP8BpvmE_5j9ZqW2eJbNphYzrCMBZ-2YuX6d-RRkHI4gQ1FV-cvOeCfRC58uZS9NiToZv2mx7909oCqLvCW_n5hDHeK&typo=1> > * > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to > [email protected]
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