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8.8.7.1*
Except as provided in 8.8.7.2 and 8.8.7.3, sprinklers shall be required in all ceiling pockets.
8.8.7.2
Sprinklers shall not be required in ceiling pockets where all of the following are met:
  1. The total volume of the unprotected ceiling pocket does not exceed 1000 ft3 (28 m3).
  2. The depth of the unprotected ceiling pocket does not exceed 36 in. (900 mm).
  3. The entire floor under the unprotected ceiling pocket is protected by sprinklers at the lower ceiling elevation.
  4. *The total size of all unprotected ceiling pockets in the same compartment within 10 ft (3 m) of each other does not exceed 1000 ft3 (28 m3).
  5. The unprotected ceiling pocket has noncombustible or limited-combustible finishes.
  6. Quick-response sprinklers are utilized throughout the compartment.
8.8.7.3
Sprinklers shall not be required in skylights and similar pockets in accordance with 8.5.7.

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