Per NFPA 13 (2007), which occupancy hazard classification applies to typical offices, churches, educational classrooms, and hospital patient rooms?
Sprinkler Systems
Question · Easy
What is the defining feature of a wet-pipe sprinkler system under NFPA 13 (2007)?
Where piping cannot be reliably kept above freezing, which automatic sprinkler system type is the usual NFPA 13 (2007) choice?
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Which formula gives sprinkler discharge in the NFPA 13 (2007) hydraulic method?
What is the nominal K-factor of a standard 1/2-inch orifice spray sprinkler?
Unless a listed exception applies, new aboveground sprinkler piping is hydrostatically tested at which acceptance pressure and duration per NFPA 13 (2007)?
What is the ordinary temperature classification range for automatic sprinklers in NFPA 13 (2007)?
What is the minimum residual operating pressure at a standard spray sprinkler unless the listing requires a higher value?
Unless a storage-specific rule applies, what is the minimum clearance from the sprinkler deflector to the top of storage per NFPA 13 (2007)?
Per NFPA 13 (2007) Table 11.2.3.1.2, what combined inside-and-outside hose stream allowance is added to Light Hazard sprinkler demand?
Why is an OS&Y valve commonly used as a sprinkler control valve?
Using the NFPA 13 (2007) density/area starting point, what design density and remote area apply to Ordinary Hazard Group 2?
Question · Medium
An Ordinary Hazard Group 1 wet system is designed at the NFPA 13 (2007) starting point of 0.15 gpm/ft² over 1,500 ft². What is the sprinkler demand before hose stream is added?
A Light Hazard wet system is designed at 0.10 gpm/ft² over 1,500 ft². What total water supply is required after the NFPA 13 (2007) Light Hazard hose stream is added?
A K-5.6 sprinkler operates at 16 psi residual. What is its discharge?
For standard spray upright or pendent sprinklers, what is the maximum protection area per sprinkler in Ordinary Hazard occupancies per NFPA 13 (2007)?
A new system has 420 sprinklers. How many spare sprinklers must be kept on the premises per NFPA 13 (2007)?
Under NFPA 13 (2007) 7.2.3, a dry-pipe system of 600 gallons has a listed quick-opening device. Which water-delivery rule applies?
When the density/area method is used on a dry-pipe system, how is the remote design area adjusted in NFPA 13 (2007)?
What Hazen-Williams C-factor does NFPA 13 (2007) assign to black steel pipe in a wet-pipe system?
What is the maximum hanger spacing for 1-inch steel sprinkler pipe per NFPA 13 (2007)?
A glass-bulb sprinkler is marked with a white bulb and is rated 200°F. Which temperature classification is that, and what maximum ceiling temperature is allowed?
Per NFPA 13 (2007), a fire department connection is not required for which of the following sprinkler systems?
What is the maximum floor area on one floor that a single Light Hazard or Ordinary Hazard sprinkler system may protect per NFPA 13 (2007) 8.2?
Unless baffles are installed, what is the minimum distance between standard spray sprinklers per NFPA 13 (2007)?
What minimum pitch does NFPA 13 (2007) require on dry-pipe branch lines so the system will drain?
What is the operating sequence of a single-interlock preaction system?
Per NFPA 13 (2007) occupancy examples, how should a typical mercantile sales floor be classified for sprinkler design?
What is the NFPA 13 (2007) density/area starting point for Extra Hazard Group 1?
An Ordinary Hazard Group 2 dry-pipe system uses the 0.20 gpm/ft² starting density. After the NFPA 13 (2007) 30 percent dry-pipe area increase, what is the sprinkler demand before hose stream?
Question · Hard
A hydraulically calculated Ordinary Hazard area is 1,500 ft². Each sprinkler covers 130 ft². How many sprinklers must be included in the remote area?
A K-5.6 sprinkler must deliver 28 gpm. What residual pressure is required at the sprinkler?
An Extra Hazard Group 2 wet system is designed at 0.40 gpm/ft² over 2,500 ft². What total water supply and duration apply after the NFPA 13 (2007) Extra Hazard hose stream is added?
For standard spray sprinklers in Extra Hazard, what maximum protection area per sprinkler does NFPA 13 (2007) allow when the system is hydraulically calculated at a density of 0.25 gpm/ft² or greater?
What pneumatic acceptance test does NFPA 13 (2007) require for a dry-pipe system?
What is the minimum hanger-rod diameter NFPA 13 (2007) requires for steel sprinkler pipe 4 inches and smaller?
What hose connection does a Class I standpipe system provide under NFPA 14 (2007)?
Standpipe Systems
What is a Class II standpipe system under NFPA 14 (2007)?
How does NFPA 14 (2007) define a Class III standpipe system?
What is an automatic wet standpipe system per NFPA 14 (2007)?
Which statement describes a manual dry standpipe under NFPA 14 (2007)?
What minimum residual pressure must a hydraulically designed Class I or Class III standpipe provide at the most remote 2-1/2-inch hose connection per NFPA 14 (2007)?
If residual pressure at a hose connection would exceed 175 psi, what does NFPA 14 (2007) require?
What minimum flow must the hydraulically most remote Class I or Class III standpipe deliver per NFPA 14 (2007)?
What minimum flow and residual pressure apply to a hydraulically designed Class II standpipe per NFPA 14 (2007)?
What is the minimum nominal pipe size for a Class I or Class III standpipe under NFPA 14 (2007)?
New standpipe piping is hydrostatically tested at which acceptance pressure and duration per NFPA 14 (2007)?
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