Podcast
Questions and Answers
Match the following pressure ranges with their corresponding description:
Match the following pressure ranges with their corresponding description:
40-80 psi (275-550 kPa) = Acceptable range at water service < 40 psi (275 kPa) = Upper pressure limit for systems with thermoplastic piping
80 psi (550 kPa) = Upper limit in most residential and commercial systems 8 psi (55 kPa) - 15 psi (103 kPa) = Minimum pressure for fixtures with flush tanks and flushometer valves
Match the following concerns with their impact on water supply design:
Match the following concerns with their impact on water supply design:
Noise, erosion, economy = Dictate minimum and maximum water velocity Small diameter pipes = Result in high noise, erosion, and pumping costs Large diameter pipes = Reduce noise, erosion, and pumping costs but increase installation costs Intermediate pipe diameter = Desirable to balance cost and efficiency
Match the following water velocity limits with their corresponding descriptions:
Match the following water velocity limits with their corresponding descriptions:
5-10 ft/s (1.5-3 m/s) = Typical limit in supply piping as per plumbing codes < 5 ft/s (1.5 m/s) = Maximum safe velocity for thermoplastic pipes
15 ft/s (4.5 m/s) = Allowed in equipment feed lines in mechanical rooms 4.5 m/s = Equivalent to 15 ft/s
