I am trying to design for a special shower drainage situation.
I have two showers that together drain 3gpm into a long shallow trench/depression in the floor to a 2" floor drain pipe, 5" square grate strainer.
The CPC says 2DFU for a floor drain, and 2DFU is the equivalent of 1gpm... So I am...
Can someone check my work here... I'm trying to size an air receiver for a special fixture that is served by a house compressed air system and the fixture needs constant pressure at 90psi min, no drops.
I want to put a secondary receiver before the special fixture, trying to size it to hold 1...