Should the FDC (shown below) be connected where it is shown on the proposed riser schematic?
It is my opinion that the right portion of the image below does not show proper connection of the FDC to the risers.
Is this correct?
It appears that the FDC if used, would send pressure back against the RPZ and diminish fire flow to the risers in use.
The pressure at the street is 80 psi. Water coming in at the FDC may be 150 psi. Note the connection to a fire hydrant.
Should the FDC connect directly to the dry and wet pipe fire sprinkler risers as required by code or is the proposed riser schematic acceptable?
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