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Inside Hose Stream Allownce

Question asked by on Jun 21, 2017

It is regarding inside hose stream allowance during hydraulic calculations. It is a warehouse building and we are tying into external centralized fire water network. The building is protected throughout the sprinkler system and wet class I standpipe. We have provided the common header inside the building for designated stand pipe and sprinkler risers. The 25mm inside hose is connected to wet class I standpipe riser. Sprinkler riser is only delivering water to wet sprinkler system within the building. Do we have to add inside hose stream allowance into sprinkler hydraulic calculations or it has to added into standpipe hydraulic calculations?