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  • Users: ewald
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  1. ewald

    AASHTO H20 load

    Is the AASHTO H20 load the heaviest wheel load allowed for highways and bridges in the US? Are there more one H20 type load, and if so describe please? Ewald
  2. ewald

    Surge forces in sewer force main

    You need to do a surge analysis using a computer program. Water hammer can be a big problem in PVC pipelines because PVC do not handle cyclic pressures very well. You will need to use a higher pressure class pipe to overcome that problem. Relief measures can be , soft stop pumps, air valves...

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