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  • Users: kr1114
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  1. kr1114

    Ductile Iron Special Class question

    Hi, I am doing a conceptual design for a pipeline using three different pipe materials (PVC, HDPE, and ductile iron) - and I am not a materials guy and I apologize for my basic question. My question is in regards to what the definition of Special Class is for ductile iron piping. I have...
  2. kr1114

    calculating pipe strength required for a road crossing

    I am looking to see if anyone knows the calculation to calculate the pipe strength required when you have to cross beneath a roadway or railway tracks. For example I have a 6" HDPE DR17 (100 psi) pipe that needs to go beneath a set of tracks. The casing pipe has to be 12" but I am not sure of...

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