Fire Sprinkler Tank Sizing

If a residential home water system doesn t meet the psi needs of the fire sprinkler system called fire flow a water storage solution may be needed to obtain a building permit.

Fire sprinkler tank sizing.

Sprinkler calculation step by step. Most fire departments approve fiberglass water tanks for fire protection systems. Fire pumps can t be used as pressure maintenance pumps. Horizontal elbows or tees upstream of a fire pump must be 10 pipe diameters from the suction flange on a split case fire pump.

The fire department drafting connections are made through bulkhead fittings in the tank wall and then buried underground until they exit at the desired drafting location. Calculate the minimum flow given the system design density and sprinkler head area. This standard provides the minimum requirements for the design construction installation and maintenance of tanks and accessory equipment that supply. Pumps must maintain a positive suction pressure at the suction flange.

Underground fiberglass fire protection tanks are kept out of visible sight consume less property and provide more security from external factors. Electrical feeds to fire pump controllers must have a two hour fire rating. Calculate minimum flow from the mrh with the sprinkler minimum pressure and k factor. Always contact your fire chief and local public building officials before moving ahead with a storage tank project involving fire sprinklers or hydrants.

The average fire sprinkler system requires seven pounds per square inch psi of water pressure to operate effectively. Improper tank size location or plumbing layout may reduce the effectiveness of the water supply creating liability and possible occupancy issues.