NFPA NFPA 13 Sprinkler Systems

Question 1

What is the minimum water supply duration required for a light hazard occupancy sprinkler system under NFPA 13?

Accepted Answer

30 minutes

Answer

NFPA 13 requires a minimum water supply duration of 30 minutes for light hazard occupancies.

Question 2

According to NFPA 13, what is the maximum spacing allowed between standard spray upright or pendent sprinklers in light hazard occupancies?

Accepted Answer

200 sq ft

Answer

NFPA 13 permits a maximum coverage area of 200 square feet per sprinkler in light hazard occupancies.

Question 3

Under NFPA 13, what type of sprinkler system uses air pressure to hold water back until a sprinkler activates?

Accepted Answer

Dry pipe system

Answer

A dry pipe system uses pressurized air or nitrogen to hold the water back in the supply piping until a sprinkler head opens.

Question 4

What is the minimum clearance required between the deflector of a sprinkler head and the top of storage under NFPA 13?

Accepted Answer

18 inches

Answer

NFPA 13 requires a minimum 18-inch clearance between the sprinkler deflector and the top of storage.

Question 5

According to NFPA 13, which occupancy classification applies to offices, schools, and churches?

Accepted Answer

Light hazard

Answer

Offices, schools, and churches are classified as light hazard occupancies under NFPA 13.

NFPA - National Fire Protection Association Practice Test