Free NFPA CWBSP Exam Questions

What is the minimum calculated design area for a light hazard sprinkler system protecting an open office space with a noncombustible acoustic ceiling tile installed 6 in. (150 mm) below the bottom of solid wood joists?

For an existing antifreeze system without a backflow prevention device, what size hole is required in the check valve separating the supply and the antifreeze?

A 4 in. (102 mm) nominal diameter Schedule 10 sprinkler main is to be supported from the structure utilizing a trapeze hanger with a span of 8 ft (2.4 m). Using Schedule 40 pipe for the trapeze hanger, what is the minimum diameter pipe that should be used?

Which type of pipe does not require a special listing to use threaded fittings?

What ASTM standard covers the manufacture of chlorinated polyvinyl chloride (CPVC) pipe, allowed to be used in fire sprinkler systems?