Returning to the original question, I stumbled across this in the 2003 edition of NFPA 1141:
"9.2.7 Dead-end mains shall not exceed 183 m (600 ft) in length for main sizes less than 250 mm (10 in.) in diameter."
This is an industry standard as regards fighting fires. Any other...
I think that a single 8"-diameter, 2000-foot-long, water pipe serving only a small building located at the end of the pipe would qualify as a "dead-end main".
Though water drawn from the end of the main is constant, the demand is small in proportion to the volume of water in the main. This...
Thank you. This addresses the residual pressure, yet there are other design factors of water quality, vacuum conditions, that may be more of a limiting factor than residual fire flow pressures.
Thank you EVERYONE for the responses to the question. The case I have in mind concerns a campus with difficult terrain crowded with structures.
I understand the water-supply principles behind the avoiding of dead-end mains. What puzzles is the lack of a scientific and quantifiable basis for...
Hi,
Does anyone know of an industry/federal-level reference for the maximum length of dead-end water mains - mains on the order of 8" to 12" in diameter? Thank you, Garrett
