A sprinkler system with control mode design area ceiling sprinklers and in-rack sprinklers is protecting a storage warehouse for Group A plastics stored up to 20-ft in height. A separate cross main will be used to supply the in-rack sprinklers. The cross main for the in-rack sprinklers will be connected to the main riser for the ceiling system at the base of the riser through a manifold arrangement. The sprinkler demand for the in-rack system was calculated to be 286 gpm at 54 psi at the base of the riser. The sprinkler demand for the overhead system has been calculated to be 1124 gpm at 63 psi at the base of the riser. A 2000 sq ft design area was used for the overhead system. What is the total flow demand of the overall sprinkler system at the manifold?

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To calculate the total flow demand of the overall sprinkler system at the manifold we need to sum up ... View the full answer