COMPLETE QUESTIONS AND ANSWERS
GRADED A+
◉ Sprinkler system with open heads. Answer: Deluge system
◉ Freezing point of antifreeze solutions. Answer: Hydrometer or
refractometer
◉ Color required for sprinkler and standpipe risers per local law
58/2009. Answer: Yellow
◉ Distance for hanger assembly to center line of an upright
sprinkler head. Answer: 3 inches
◉ Location of the automatic ball drip. Answer: Between lower check
valve and fire department connection
◉ Purpose of a ball drip. Answer: To prevent freezing in the line
◉ Build up of foreign matter on a sprinkler head. Answer: Loading
, ◉ When a sprinkler head opens. Answer: It is said to be fused
◉ Minimum air pressure inside a pressure tank. Answer: 75 psi
◉ Height a gravity tank should be above highest sprinkler heads it
supplies. Answer: 25 feet
◉ Frequency for replacing gauges. Answer: Every 5 years
◉ Number of spare sprinkler heads required when under 300
sprinklers. Answer: 6
◉ Number of spare sprinkler heads required when there are 300 to
1000 sprinklers. Answer: 12
◉ Number of spare sprinkler heads required when there are over
1000 sprinklers. Answer: 24
◉ Year all sprinklers prior to which shall be replaced. Answer: 1920
◉ GPM at which house pumps fill the gravity tank. Answer: 65 gpm