
Palletize and Solid Pile Storage
Commodity Max. Building Height
ft (m)
Max. Storage Height
ft (m)
Min. Pressure
psi (bar)
cULus FM
Class I, II, III, IV
Encapsulated or Unencapsulated
Cartoned Unexpanded Plastics
45 (13,7) 35 (10,7) -- 63 (4,3)
40 (12,2) 35 (10,7) 52 (3,6) 52 (3,6)
35 (10,7) 30 (9,1) 52 (3,6) 52 (3,6)
32 (9,7) 25 (7,6) 42 (2,9) 52 (3,6)
30 (9,1) 25 (7,6) 35 (2,4) 35 (2,4)
Uncartoned (Exposed)
Unexpanded Plastics
45 (13,7) 35 (10,7) -- 63 (4,3)
40 (12,2) 35 (10,7) 52 (3,6) 52 (3,6)
32 (9,7) 25 (7,6) 42 (2,9) 52 (3,6)
30 (9,1) 25 (7,6) 35 (2,4) 35 (2,4)
Cartoned
Expanded Plastics
32 (9,7) 25 (7,5) 42 (2,9) --
30 (9,1) 25 (7,6) 35 (2,4) 35 (2,4)
Rack Storage
Class I, II, III, IV
Encapsulated or Unencapsulated
Cartoned Unexpanded Plastics
45(1) (13,7) 40(1) (12,2) 63 (4,3) 63 (4,3)
40 (12,2) 35 (10,7) 52 (3,6) 52 (3,6)
35 (10,7) 30 (9,1) 52 (3,6) 52 (3,6)
32 (9,7) 25 (7,6) 42 (2,9) 52 (3,6)
30 (9,1) 25 (7,6) 35 (2,4) 35 (2,4)
Uncartoned (Exposed)
Unexpanded Plastics
45(1) (13,7) 40(1) (12,2) 63 (4,3) 63 (4,3)
40 (12,2) 35 (10,7) 52 (3,6) 60 (4,1)
35 (10,7) 30 (9,1) 52 (3,6) 52 (3,6)
32 (9,7) 25 (7,6) 42 (2,9) 52 (3,6)
30 (9,1) 25 (7,6) 35 (2,4) 35 (2,4)
Cartoned
Expanded Plastics
32 (9,7) 25 (7,6) 42 (2,9) --
30 (9,1) 25 (7,6) 35 (2,4) 35 (2,4)
(1) One level of in-rack sprinklers required
Idle Pallet Storage
Type of Arrangement
and Method
Max. Building Height
ft (m)
Max. Storage Height
ft (m)
Min. Pressure
psi (bar)
cULus FM
Wood or Plastic Pallets
on Floor
40 (12,2) 35 (10,7) 52 (3,6) 52 (3,6)
32 (9,7) 25 (7,6) 42 (2,9) 52 (3,6)
30 (9,1) 25 (7,6) 35 (2,4) 35 (2,4)
Plastic Pallets in Open Racks
40 (12,2) 35 (10,7) 75 (5,2) 60 (4,1)
35 (10,7) 30 (9,1) 75 (5,2) 52 (3,6)
35 (10,7) 20 (6,1) 75 (5,2) 52 (3,6)
32 (9,7) 20 (6,1) 60 (4,1) 52 (3,6)
30 (9,1) 25 (7,6) 50 (3,4) 35 (2,4)
30 (9,1) 20 (6,1) 50 (3,4) 35 (2,4)
Rubber Tire Storage
On-side or On-thread
In Palletized Portable Racks
Open Portable Racks or Fixed Racks
Without Solid Shelves
30 (9,1) 25 (7,6) 35 (2,4) 35 (2,4)
Note: Other methods and arrangements follow K-17 ESFR design criteria per NFPA.
For Rolled Paper Storage see NFPA 13.
For Aerosol Storage see NFPA 30B.
3.