3-inch force main
3-inch force main
(OP)
Need to use a 3-inch force main, almost 3 miles long. SDR 21 comes in 3-inch but obviously not common. SCH 80 is readily available in 3-inch but not sure if the belled end SCH80 is readily available.
I have two questions:
1) Do you concur with the SDR21?
2) What type of fittings would be used?
Thanks in advance, I'm not overly familiar with the small diameter stuff.
JT
I have two questions:
1) Do you concur with the SDR21?
2) What type of fittings would be used?
Thanks in advance, I'm not overly familiar with the small diameter stuff.
JT





RE: 3-inch force main
RE: 3-inch force main
RE: 3-inch force main
RE: 3-inch force main
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: 3-inch force main
RE: 3-inch force main
RE: 3-inch force main
That statement in Ten States is based on a standard pump with a throughlet of 3" minimum. If a grinder pump is used, sizes less than 4" are acceptable. Ten States is geared more toward larger public mains, not small projects with low sewage generation.
If the pump is not a grinder pump, I would agree with you that a 4" force main is required, unless the regulatory body in that state doesn't invoke Ten States (I think there are only a couple, if any, that don't).
RE: 3-inch force main
RE: 3-inch force main
Being a forcemain, I wouldn't worry too much about having to work on it. You can call out for the HDPE to be DIPS or IPS in size and therefore can get ductile iron fittings to work on it. The cost of the pipe will be a lot higher however, and depending on your route, the installation cost could be higher.
RE: 3-inch force main