Fire Sprinkler Tank Sizing

Tanks must be sized to provide enough water to control or suppress a fire in the building and water levels must be checked and maintained.

Fire sprinkler tank sizing.

Horizontal elbows or tees upstream of a fire pump must be 10 pipe diameters from the suction flange on a split case fire pump. Improper tank size location or plumbing layout may reduce the effectiveness of the water supply creating liability and possible occupancy issues. Water levels are critical for fire sprinkler systems. The average fire sprinkler system requires seven pounds per square inch psi of water pressure to operate effectively.

Calculate minimum flow from the mrh with the sprinkler minimum pressure and k factor. 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. 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. Always contact your fire chief and local public building officials before moving ahead with a storage tank project involving fire sprinklers or hydrants.

Sprinkler calculation step by step. Fire sprinkler guide to fire sprinklers in the international building code 2015 edition. Pumps must maintain a positive suction pressure at the suction flange. Most fire departments approve fiberglass water tanks for fire protection systems.

Electrical feeds to fire pump controllers must have a two hour fire rating. Calculate the minimum flow given the system design density and sprinkler head area.