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When backflow prevention valves are installed on existing pipe scheduled systems, the friction losses of the device shall be accounted for when determining
When backflow prevention valves are installed on existing pipe scheduled systems, the friction losses of the device shall be accounted for when determiningA . residual pressure.B . system flow requirements.C . static pressure.D . system GPM requirements.View AnswerAnswer: A Explanation: When backflow prevention devices are added to a system, their...
Assuming the conditions are satisfied for design area reduction, what can the area of sprinkler operation be reduced to for quick response sprinklers?
An office space with 10 ft (3 m) high ceilings is designated as a Light Hazard Occupancy. It is determined that the area of sprinkler operation is 1,500 ft2 (139 m2). Assuming the conditions are satisfied for design area reduction, what can the area of sprinkler operation be reduced to...
What is the minimum design density?
A warehouse has palletized storage of empty wood crates on wood pallets to a height of 11 ft (3.4 m). What is the minimum design density?A . 0.15 gpm/ft2 (6.1 mm/min)B . 0.20 gpm/ft2 (8.1 mm/min)C . 0.23 gpm/ft2 (9.2 mm/min)D . 0.25 gpm/ft2 (10.2 mm/min)View AnswerAnswer: B Explanation: The...
The distance between a hanger and the center line of an upright sprinkler shall be no less than
The distance between a hanger and the center line of an upright sprinkler shall be no less than A. 3 in. (75 mm). B. 4 in. (100 mm). C. 5 in. (125 mm). D. 6 in. (150 mm).View AnswerAnswer: A Explanation: The correct answer is: A. 3 in. (75 mm)...
What is the pressure at a sprinkler head with a flow of 33 gpm (125 L/min) with a K-factor of 5.6 (80)?
What is the pressure at a sprinkler head with a flow of 33 gpm (125 L/min) with a K-factor of 5.6 (80)?A . 15.2 psi (1.1 bar)B . 22.3 psi (1.54 bar)C . 34.7 psi (2.4 bar)D . 54.8 psi (3.78 bar)View AnswerAnswer: B Explanation: The pressure at a sprinkler...
What is the maximum allowable water delivery time for a dry pipe system protecting an Ordinary Hazard Group II occupancy?
What is the maximum allowable water delivery time for a dry pipe system protecting an Ordinary Hazard Group II occupancy?A . 40 secondsB . 45 secondsC . 50 secondsD . 60 secondsView AnswerAnswer: C Explanation: The maximum allowable water delivery time for a dry pipe system protecting an Ordinary Hazard...
The purpose of the owner's certificate is to
The purpose of the owner's certificate is toA . help ensure that the capability of the sprinkler system is adequate to address the hazard.B . replace project plans.C . obtain the building permit.D . be a declaration by the sprinkler contractor as to the hazards in the building.View AnswerAnswer: A...
What is the required minimum design density/area for protection of floor stacked, idle wood pallets to a height of 8 ft (2.4 m) under a 30 ft (9.1 m) roof deck using high expansion foam with a K11.2 (160) CMDA sprinkler?
What is the required minimum design density/area for protection of floor stacked, idle wood pallets to a height of 8 ft (2.4 m) under a 30 ft (9.1 m) roof deck using high expansion foam with a K11.2 (160) CMDA sprinkler?A . 0.225 gpm/ft2 (9.15 mm/min) over 1,250 ft2 (115...
When utilizing ordinary temperature CMDA sprinkler protection for a single-row rack storage of an unencapsulated Class I commodity stored 15 ft (4.6 m) high without in-rack sprinklers with 8 ft (2.4 m) aisles, what is the minimum design density required?
When utilizing ordinary temperature CMDA sprinkler protection for a single-row rack storage of an unencapsulated Class I commodity stored 15 ft (4.6 m) high without in-rack sprinklers with 8 ft (2.4 m) aisles, what is the minimum design density required?A . 0.20 gpm/ft2 (8.1 mm/min)B . 0.32 gpm/ft2 (13 mm/min)C...
What is the minimum gpm discharge required per sprinkler head?
The FPE has indicated that a vertical opening shall be protected by closely spaced sprinklers in combination with a draft stop installed per code. The sprinklers will be spaced 6 ft (1.83 m) on center. What is the minimum gpm discharge required per sprinkler head?A . 10 gpm (38 lpm)B...
