HDPE-Ductile Iron thrust blocks
HDPE-Ductile Iron thrust blocks
(OP)
I just found a similar topic regarding HDPE here:
http://www .eng-tips. com/viewth read.cfm?q id=179991& amp;page=5
We are installing 3200 ft of 8-in SDR11 HDPE pipe. It will connect into a 10-in ductile iron pipe. Fluid is water (groundwater). Pipe will be buried minimum of 24-in below surface.
I'm just starting on reading through the links in that post. But it appears that HDPE does not require thrust blocks. But, I assume a thrust block will be required at the point of connection between HDPE and ductile iron.
I did find "Thrust Restraint Design For Ductile Iron Pipe" by DIPRA (http://www.dipra.org/publications/design.cfm).
Anyone have any additional advice they would like to share in dealing with a HDPE-Ductile Iron transition?
http://www
We are installing 3200 ft of 8-in SDR11 HDPE pipe. It will connect into a 10-in ductile iron pipe. Fluid is water (groundwater). Pipe will be buried minimum of 24-in below surface.
I'm just starting on reading through the links in that post. But it appears that HDPE does not require thrust blocks. But, I assume a thrust block will be required at the point of connection between HDPE and ductile iron.
I did find "Thrust Restraint Design For Ductile Iron Pipe" by DIPRA (http://www.dipra.org/publications/design.cfm).
Anyone have any additional advice they would like to share in dealing with a HDPE-Ductile Iron transition?





RE: HDPE-Ductile Iron thrust blocks
Geoffrey D Stone FIMechE C.Eng;FIEAust CP Eng
www.waterhammer.bigblog.com.au
RE: HDPE-Ductile Iron thrust blocks
RE: HDPE-Ductile Iron thrust blocks
I would think alternatively asking e.g. ductile iron pipe manufacturers to increase the cost in their piping quotations by providing extra thrust collars or restrained joints purely to control the movements inherent with the specification and adjacent use of their competitor’s (hdpe) piping could conceivably involve questions of engineering ethics or fairness; however, in any case it would at least be responsible/courteous if this is done to advise the ductile iron folks exactly how and with what magnitude of forces etc. the polyethylene piping system will be pulling or pushing on their piping/joints. There are apparently other perhaps non-obvious issues that could be potentially involved with connecting to, repairing, or cutting into hdpe pipe systems, e.g. as explained by a large coupling manufacturer at h
RE: HDPE-Ductile Iron thrust blocks
RE: HDPE-Ductile Iron thrust blocks
RE: HDPE-Ductile Iron thrust blocks
RE: HDPE-Ductile Iron thrust blocks
RE: HDPE-Ductile Iron thrust blocks
Geoffrey D Stone FIMechE C.Eng;FIEAust CP Eng
www.waterhammer.bigblog.com.au