For the purpose of sprinkler design, a warehouse with moderately combustible contents stored to heights of 12 ft (3.6 m) is classified as an

For the purpose of sprinkler design, a warehouse with moderately combustible contents stored to heights of 12 ft (3.6 m) is classified as an
A . Ordinary hazard (Group 1).
B . Ordinary hazard (Group 2).
C . Extra hazard (Group 1).
D . Extra hazard (Group 2).

View Answer

Answer: B

Explanation:

The classification of occupancies for sprinkler system design is outlined in NFPA 13, Standard for the Installation of Sprinkler Systems. Occupancy hazard classification is based on the combustibility of the contents and the storage height.

Ordinary Hazard (Group 2): Includes occupancies with moderately combustible contents, such as warehouses with storage heights of up to 12 feet (3.6 meters). This group accounts for the potential for fire spread due to the storage arrangement and material types.

Ordinary Hazard (Group 1): Covers light combustible loads, typically not stored as high or in large quantities.

Extra Hazard (Groups 1 and 2): Reserved for high-risk areas with substantial fire hazards, including highly flammable or explosive materials and extensive fire loads.

Thus, a warehouse with moderately combustible contents stored to heights of 12 ft falls under Ordinary Hazard (Group 2).

Reference: NFPA 13, Chapter 4.3.3: Hazard classifications for sprinkler system design.