Storage of Group A plastic
Storage of Group A plastic
(OP)
I am 99% sure I already know the answer but I got to ask anyway.
Currently we are operating under NFPA #13 2002 edition but word is we will move to 2010 in January. I know I could use the 2010 now but we can drop back to 2002 if we can make this work.
Storage of fabrics are primarily exposed polypropylene and take up about 30% of the storage space. Total building size is 37.500 sq. ft.. While the photo shows storage higher than 5'-0" I have been told storage height will be limited to 5'-0". We know how this works but I know the customer and from past experience when they say they will keep storage below 5' they will enforce it.

Existing system was design to a .30 over 2,000 but when I conducted the flow test on the property I got 65 static, 27 residual @ 769 gpm.
I can get a .20 over 1,500 with 250 hose but that 500 gpm hose stream requirement kills me.
From 2002 Table 12.1.10.1.1 Discharge Criteria for Miscellaneous Storage and Commodity Classes I through IV Storage 12 ft (3.7 m) or Less in Height under Miscellaneous Group A Plastic Storage Curve 3 (.20/1.500) is fine but 500 gpm hose is required. It's obvious the 500 gpm hose requirement is killing me.
Did I read this right, is the 500 gpm hose requirement required or is there some way around it by arranging the storage?
Currently we are operating under NFPA #13 2002 edition but word is we will move to 2010 in January. I know I could use the 2010 now but we can drop back to 2002 if we can make this work.
Storage of fabrics are primarily exposed polypropylene and take up about 30% of the storage space. Total building size is 37.500 sq. ft.. While the photo shows storage higher than 5'-0" I have been told storage height will be limited to 5'-0". We know how this works but I know the customer and from past experience when they say they will keep storage below 5' they will enforce it.

Existing system was design to a .30 over 2,000 but when I conducted the flow test on the property I got 65 static, 27 residual @ 769 gpm.
I can get a .20 over 1,500 with 250 hose but that 500 gpm hose stream requirement kills me.
From 2002 Table 12.1.10.1.1 Discharge Criteria for Miscellaneous Storage and Commodity Classes I through IV Storage 12 ft (3.7 m) or Less in Height under Miscellaneous Group A Plastic Storage Curve 3 (.20/1.500) is fine but 500 gpm hose is required. It's obvious the 500 gpm hose requirement is killing me.
Did I read this right, is the 500 gpm hose requirement required or is there some way around it by arranging the storage?





RE: Storage of Group A plastic
Cloth
Cartoned and not cartoned
- Natural fiber, viscose Class III
- Syntheticd Class IV
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Fire Sprinklers Save Firefighters’ Lives Too!
RE: Storage of Group A plastic
It is something we have all seen... it's the plastic matting you see placed atop freshly seeded highway berms holding dirt in place giving grass seed time to sprout.
RE: Storage of Group A plastic
Grp A Plastic
Exposed, Unexpanded and expanded, Palletized, height ≤5, OH2, hose 250
You should be good as per the section below from NFPA 13, 2010
15.2.1 For the storage of Group A plastics stored 5 ft (1.5 m)
or less in height, the sprinkler design criteria for miscellaneous
storage specified in Chapter 13 shall be used. The protection
criteria in Chapter 13 shall be acceptable for storage of
Group A plastic commodities up to and including 5 ft (1.5 m)
in height. (See Table 13.2.1 for specific GroupAplastic storage height
protection criteria.)
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Fire Sprinklers Save Firefighters’ Lives Too!
RE: Storage of Group A plastic
RE: Storage of Group A plastic
The difference between Table 12.1.10.1.1 2002 Edition and Table 13.2.1 is surprising to me.
For Group A plastic < 5' 500 gpm hose is clearly called for in 2002 while Table 13.2.1 calls for 250 gpm hose is called for in 2010.
Sdpaddler50,
Metal building having bent metal purlins and metal roof deck.
RE: Storage of Group A plastic
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Fire Sprinklers Save Firefighters’ Lives Too!
RE: Storage of Group A plastic
RE: Storage of Group A plastic
I checked with the chemical engineer for the company and he told me it was polypropylene so it is a Group A.
RE: Storage of Group A plastic