HDPE Deflection
HDPE Deflection
(OP)
What is the maximum deflection/bend HDPE can go through in a turn?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: HDPE Deflection
Small diameter, pressurized water and WW pipe can be deflected 5 degrees, max. This is usually specified by the local utility.
Gas piping shouldn't be deflected at all, again, usually spec'd by gas co.
Large diameter gravity flow piping can quite likely tolerate deflection, but most often straight runs to junctions are specified.
RE: HDPE Deflection
RE: HDPE Deflection
Cold field bend radius of HDPE is function of DR and OD. MINIMUM Bend radius for common drs are as follows:
DR9 or thicker = 20 times od
DR 9 to DR13.5 = 25 times od
DR 13.5 to DR 21 = 27 times od
greater than DR 21 = 100 times od
ie. 8 in. IPS DR 11 HDPE pipe can be bent into a circle that has a 200 in. or 16.7 ft radius. Many muni's are starting to use HDPE for cul-de-sacs to eliminate the need for fittings. Perfect application for it. Good luck.