I am working on a church building with no public water. They proposal
is to install a fire pump and 20,000 gallons of impounded water. The
building is built and the underground partially installed, but is
wrong and needs to be replaced. The fire pump room is in the middle
of the building and cannot be relocated. The elevation of the bottom
of the tank is going to be approximately 8 ft above the floor of the
pump room. The site is on a side hill. The basement is walkout at the
far end of the building and the front of the building is
approximately grade level at first floor.
The proposal is to go underground in the pump room with the new 8"
line, over to a stairway by an outside wall, back up through the
slab, up approximately 4 ft and out through the foundation wall to
the tank. The pipe would then be run to the suction tank(s). By
raising up inside, the 350' +?- of trench will only need to be 6 ft
instead of 10-12.
Is this proposal an acceptable arrangement? I could not find anything
in NFPA 24 that says otherwise. Do I need or would any additional
valve be installed on the indoor section of pipe?
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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