riser sizing
riser sizing
(OP)
Sorry for asking such a basic question!
In a 6 floor car parking the design area consists of 12 sprinklers in 6th floor.Suppose the flow rate to be 240 g.p.m and the feed main pipe size to be 3".What will the flow rate for which the riser size will be calculated at lower floors?The same 240 g.p.m or more? Not a combined system,wet sprinkler ,similar floors.
In a 6 floor car parking the design area consists of 12 sprinklers in 6th floor.Suppose the flow rate to be 240 g.p.m and the feed main pipe size to be 3".What will the flow rate for which the riser size will be calculated at lower floors?The same 240 g.p.m or more? Not a combined system,wet sprinkler ,similar floors.





RE: riser sizing
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: riser sizing
best regards
RE: riser sizing
You can have a 4" riser feeding a 10 story office without issue, if you have enough pressure. I assume you are not sizing per pipe schedule and are sizing per hydraulic calculations. If the latter, then the calcs drive the size. If you need bigger pipe closer to the bottom to help with friction loss, then so be it, but it is soley determined by calculations.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: riser sizing
It is the latter.Thank you very much.You are very helpful .