- All Exams Instant Download
A device for use in applications requiring special water discharge patterns, directional spray, or other unusual discharge characteristics, is known as a
A device for use in applications requiring special water discharge patterns, directional spray, or other unusual discharge characteristics, is known as aA . nozzie.B . water mist nozzle.C . special sprinkler.D . CMSA sprinkler.View AnswerAnswer: C Explanation: A special sprinkler is a device for use in applications requiring special water...
Which of the following hazards can be protected with this design criteria?
Based on an existing hydraulic placard located at the sprinkler system riser, the design of the sprinkler system is based on a density of 0.495 gpm/ft2 (20.1 mm/min) over an area of 2000 ft2 (186 m2). Sprinklers in cabinet are 286 degrees. Which of the following hazards can be protected...
What is the minimum number of spare sprinklers to be provided?
A sprinkler system has been installed with 100 sprinklers. What is the minimum number of spare sprinklers to be provided?A . 3B . 6C . 9D . 12View AnswerAnswer: B Explanation: According to NFPA 13, a supply of at least six spare sprinklers shall be maintained on the premises for...
Which of the following is a mandatory referenced publication in NFPA 13?
Which of the following is a mandatory referenced publication in NFPA 13?A . NFPA 10B . NFPA 12C . NFPA 20D . NFPA 291View AnswerAnswer: C Explanation: NFPA 20, which covers the installation of stationary pumps for fire protection, is a mandatory reference in NFPA 13. This standard is essential...
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...
