Certified Water-Based Systems Professionals (CWBS)

A pump with a rated capacity of 3,000 gpm (11,335 L/min) should have what size circulation relief valve?

What is the minimum calculated design area for a dry system protecting a light hazard attic space with a roof slope exceeding a rise of 2 units in a run of 12 units and a height at the peak of 10 ft (3 m) above the bottom of the truss using quick response sprinklers?

A owner of a new warehouse wishes to store a Class III product in ordinary cardboard boxes that contain 45 percent by volume expanded plastic.

What is the commodity classification?

Using the Hazen-Williams formula, determine the friction loss in 150 ft (45.7 m) of 1 in. (25 mm) black steel schedule 40 pipe, flowing 30 gpm (115 lpm) in a wet system.

What standard applies for underground malleable iron threaded fittings of Class 150?

An existing sprinkler system in a 25 ft (1.5 m) tall building is found to be designed using K- 8.0 (115) high temperature control mode density/area (CMDA) sprinklers with a design criteria of 0.35 gpm/ft2 (13.3 mm/ min) over 2000 ft2 (186 m2).

What is the maximum storage height permitted for double-row rack storage with 8 ft (2.4 m) aisles of a nonencapsulated Class IV commodity?

Which of the following is a mandatory referenced publication in NFPA 13?

Which Occupancy Classification is a machine shop considered?

In NFPA 13R, shadowed areas shall be permitted in the protection area of a pendant or upright sprinkler as long as the cumulative dry areas do not exceed ______

Contract specifications call for a water mist fire protection system in the mechanical room.

Is this allowed per NFPA 13?