Question 1

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?

Options :

A : 1 in. (0.79 mm)

B : 1 in. (1.59 mm)

C : 1 in. (3.17 mm)

D : 1 in. (6.35 mm)

Answer: A

Question 2

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?

Options :

A : 900 ft2 (83.6 m2)

B : 1,500 ft2 (139.35 m2)

C : 1,950 ft2 (181.1 m2)

D : 3,000 ft2 (278.7 m2)

Answer: B

Question 3

What is the minimum temperature rating of ceiling sprinklers in roll paper stored at 15 ft. (4.6 m) or less?

Options :

A : 100Â°F (38Â°C)

B : 135Â°F (57Â°C)

C : 150Â°F (66â„ƒ)

D : 175Â°F (79â„ƒ)

Answer: C

Question 4

In an existing system, the vertical clearance between a high volume low speed (HVLS) fan and a sprinkler shall be

Options :

A : 12 in. (300 mm).

B : 24 in. (600 mm).

C : 36 in. (900 mm).

D : 48 in. (1200 mm).

Answer: B

Question 5

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?

Options :

A : 1.5 in. (40 mm)

B : 2 in. (50 mm)

C : 2.5 in. (65 mm)

D : 3 in. (75 mm)

Answer: B

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