Outside Storage

  • Combustible storage in the open must be compact and orderly and not more than 20 feet in height. It must be stored at least 3 feet from any property line and must not be more than 6 feet in height when within 10 feet of a property line.
  • When kept adjacent to a building, all combustible storage must be stored in approved metal or metal-lined containers equipped with tight-fitting covers.
  • Commercial dumpsters that have an individual capacity of 1.5 cubic yards or more must be stored at least 5 feet from combustible walls, openings, or combustible eave lines of roofs, except when protected by an automatic sprinkler system.

Inside Storage

  • Combustible storage is permitted in approved metal or metal-lined containers with tight-fitting covers and an individual capacity of less than 1.5 cubic yards.


  • Loose combustible storage (not in suitable bales or packages) must be stored in approved rooms or vaults constructed of non-combustible material.
  • Loose combustible material of not more than 2,500 cubic feet may be stored in a detached “loose house” if suitable located and if used for no other purpose. The opening must be protected to prevent the entrance of sparks.

Baled Combustible Storage

  • Single blocks or piles must not exceed 25,000 cubic feet of material. They must be separated by aisles of 5 feet or more or by flash fire barriers.
  • Materials that tend to swell when wet must be stored to allow for expansion in any direction. There must be at least a 3-foot clearance between walls and sides of piles.
  • If the storage compartment is not more than 30 feet wide, an 18-inch side clearance will be sufficient, provided that at least a 5-foot center aisle is maintained.
  • A clearance of at least 3 feet must be maintained between sprinkler heads and the tops of piles.

Last Edited: January 12, 2022