NFPA 13 Sprinkler Systems Flashcards
6 cards from real NFPA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 NFPA 13 Sprinkler Systems flashcards as text
Under NFPA 13, how far must a sprinkler deflector be positioned below a smooth flat ceiling for a standard pendent sprinkler?
Answer: 1 to 12 inches
NFPA 13 requires the deflector of a standard pendent sprinkler to be positioned 1 to 12 inches below a smooth flat ceiling.
What is the minimum required flow pressure at the most remote sprinkler in an NFPA 13 light hazard system?
Answer: 10 psi
NFPA 13 requires a minimum residual pressure of 7 psi at the most remote sprinkler, but design pressure at each sprinkler must meet the hydraulic calculation, commonly 7 psi minimum.
According to NFPA 13, which component must be provided at the base of each sprinkler riser to facilitate system testing and maintenance?
Answer: Butterfly valve with tamper switch
NFPA 13 requires a supervised control valve (such as an OS&Y or butterfly valve with a tamper switch) at the base of each riser.
Under NFPA 13, what is required when a sprinkler system is installed in a building with a combustible concealed space?
Answer: Sprinklers must be installed in the concealed space
NFPA 13 requires sprinklers in combustible concealed spaces unless specific exemptions based on construction type and insulation apply.
What is the maximum permitted distance between sprinklers along a branch line under NFPA 13 for light hazard occupancies?
Answer: 15 feet
NFPA 13 limits the maximum distance between sprinklers along a branch line to 15 feet in light hazard occupancies.
Under NFPA 13, what type of fitting is required when changing direction on a sprinkler branch line to ensure proper drainage?
Answer: Drop nipple with a drip leg
NFPA 13 requires that branch lines be pitched to drain, using drop nipples or equivalent fittings to ensure water drains to a low point.