When utilizing ordinary temperature CMDA sprinkler protection for a single-row rack storage of an unencapsulated Class I commodity stored 15 ft (4.6 m) high without in-rack sprinklers with 8 ft (2.4 m) aisles, what is the minimum design density required?

When utilizing ordinary temperature CMDA sprinkler protection for a single-row rack storage of an unencapsulated Class I commodity stored 15 ft (4.6 m) high without in-rack sprinklers with 8 ft (2.4 m) aisles, what is the minimum design density required?
A . 0.20 gpm/ft2 (8.1 mm/min)
B . 0.32 gpm/ft2 (13 mm/min)
C . 0.54 gpm/ft2 (22 mm/min)
D . 0.86 gpm/ft2 (35 mm/min)

View Answer

Answer: A

Explanation:

For single-row rack storage of an unencapsulated Class I commodity stored up to 15 ft high without in-rack sprinklers and with 8 ft aisles, a design density of 0.20 gpm/ft² is commonly used as a starting point in accordance with NFPA 13 guidelines for ordinary hazard occupancies.

Reference: NFPA 13’s commodity classification and design criteria for sprinkler systems, providing guidance on design densities based on the type of storage and commodity classification.