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  • Users: yyan
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  1. yyan

    Forcemain broken problem

    An engineer was hired by a developer to design a sanitary pumping station for a new subdivision in 2000 with capacity of 32L/s. The forcemain was designed and installed by developer. In 2002, this Engineer was hired by our company, later the developer wanted to upgrade the pumping station to...
  2. yyan

    Roof Drain Sizing and Stormwater Sewer Sizing

    I have a question regarding how to size the roof drain discharge sewer to nearby manhole. For building, when we size the roof drain, the national plumbing code has form to select the roof drain size based on 25mm/15min storm for most area in Ontario. When we size the storm sewer, water flow is...
  3. yyan

    Process Plant spindle water pipe material

    We design spindle cooling water system for a industrial plant. I would like to know if I can use PVC sch40 instead of galvanized steel pipe. This cooling water is low pressure, but is treated water, so we have to conside corrosion. Thanks for your help.
  4. yyan

    EPANET question

    Hi, I have a question about EPANET node demand. Usually only primary nodes demand are consided in the network. If there is any method to decide the area (dwellings) is supplied by that node. Thanks,

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