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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