Tire Carousels 2

[TravisMack]

Has anyone dealt with these? What are you doing to handle them? I've seen a few of these popping up. They are typically in car dealerships or repair garages. Typical ones are 18' x 8' x ±20' long. It is too tall to be misc storage. Based on the descriptions in 18.4(a) #5, we have 0.6/5000. Ok, it wouldn't be so bad to just do the ±150 sq ft. However, when you look at NFPA 13 (2016 and been around since at least 2013 and maybe 2010) 23.4.4.2.4 this becomes a real problem. With this section of the standard, you are going to be flowing the minimum 3000 gpm. So, my building that was 300 gpm (OH2) is now 3000 gpm because of 150 sq ft of tire carousel storage. That doesn't seem to follow what I would imagine the intent of the standard is. However, I don't see a way around it. It is a real issue when the site doesn't have the water for that and you are now looking at 10" fire lines and probable 10" bulk mains to this area. This will need a 2000 gpm pump just to handle this. Again, it seems far in excess. What is the group thought on this?

Here is a typical video of one in action:

https://www.youtube.com/watch?v=BGSLYHzjVC0

I would love to say leave it up to the PE, but I am working with the PE on this project and we have to come up with something that will work.

Travis Mack
MFP Design, LLC

http://www.mfpdesign.com

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[cdafd]

Well under the fire code

Looks like high piled stock

“ high hazard “

 

[SprinklerDesigner2]

I might be missing something but what about TABLE 18.4(d)for ESFR system?

12 K25.2 @ 15 psi plus 250 hose appears to be the best bet to me.

 

[stookeyfpe]

Travis,

We've encountered them. The solution we've worked out with the design professionals is a two part protection scheme:

PART 1: Under the 2015 IFC requirements, tires are classified as a High Hazard commodity. Per 2015 IFC Section 3206.2 we've applied the Extent and Type of Protection provision so as to limit the hazard to an area of a building separated by 1-hour fire-resistive rated construction. Door opening are required to have a 45 minute fire-resistance rating and we ask they be placed on magnetic door holders that release upon sprinkler water flow.

PART 2: See SD2 statement, i.e., K25.2 sprinklers calculated based on either the number of sprinklers per NFPA 13 Table 18.4(d) or the number of sprinklers in room, which ever is smaller.

Hopefully this helps.

 

[LCREP]

The FM Data Sheet on Grp A Plastic carousel storage recommends a water flow switch and or fire detection connected to the carousel to stop it upon detection to prevent the spread of fire. I know this is tires, but something to consider.