This is giving me heartburn. A clothing manufacturing company wants to store group IV commodities.
16.1.3 Movable Racks. Rack storage in movable racks shall be protected in the same manner as multiple-row racks.
18.104.22.168 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Up to 12 ft in Height.
22.214.171.124.1 The protection criteria for storage up to and including 12 ft shall be the same as miscellaneous storage from Chapter 13.
The definition of Compact Storage Module does not specify passive protection to qualify as such.
My question is: “Is it correct to treat this rack configuration as moveable racks?”
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10/15/2019 10:50:09 am
If you are referring to clothing racks where garments are hung on hangers, then no, those are not the same "racks" that the standard is referring to. The standard is referring to rack storage like you see at Home Depot.
10/15/2019 11:17:17 am
I think more information pertaining to your specific situation is required before any helpful insight can be given. How are they storing the clothes? Is it on movable racks, is it compact storage on shelves, etc.
10/15/2019 11:27:39 am
Thank you for your response. I have open racks on tracks that compress into 130ft². <50% polyester fabric commodity. No flue space. No passive barriers to compartmentalize a fire. Aisles are created by moving one rack across an aisle to the other side to abut another set of racks/carriages. OH2 for density. Shelves are particle board. Wire shelving is an option though. I want to call it compact modular storage. NFSA says that if the barriers are removed it qualifies as moveable racking. However, passive barriers are not in the definition of either moveable or compact.
10/16/2019 06:16:08 am
I can't be sure from your description, but it sounds like you have "solid shelf racking" not to be confused with solid shelving. Solid shelving and Back-to-back solid shelving are defined in chapter 3, subject to dimensional constraints. Shelving can only be max 15' aff. Solid shelf racking is discussed later- I believe it's in General storage although I'm not sitting in front of a book. It sets up the critera for rack sprinklers to be added to whatever criteria would apply were the shelves not solid constructed. However, since your racks move adding rack sprinklers is not an option. So, the best option is to get your client to retrofit the racks with wire shelves and protect as Class IV in mult-row racks.
10/16/2019 09:00:48 am
Thx PJD. Sorry for the vagueness. It is solid shelf racking on carriages. It is not enclosed shelf storage like you typically see in an office space (with the wheel that you crank to move the carriages). It is simply solid shelf racking with handles to pull/push the carriage on a track. Your suggestion of retrofitting the racks seems to be best option for customer. I do believe the NFPA needs to put some effort into distinguishing what is Moveable Racks and Compact Storage Modules - seems there is quite an overlap.
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