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  1. johnyt79

    Sanitary Sewer Creek Crossing

    I've encountered a design challenge where we are required to cross under a low flow creek with a 200mm sanitary sewer main. The usual method is to cross the creek with a segment of ductile iron pipe, encase it in concrete, and then place 200mm di. cobbles on top. However, the enviromental team...
  2. johnyt79

    EPANET - Residence Time "Age" analysis

    The pipe volume between the pump and the reservoir is not greater than the reservoir volume. However, the pipe volume is greater than the reservoir cycle volume. This indicates that each pump cycle, the entire volume in the pipe is replaced, and then water from the pump will be filling the...
  3. johnyt79

    EPANET - Residence Time "Age" analysis

    Thanks for the comment Hydrae! I've set it up as "FIFO" or First in First Out. This should give the highest water quality as turnover time would be the lowest. However, i've tried the other three options as well without any noticeable difference. I've also tried adjusting so that pump turn on...
  4. johnyt79

    EPANET - Residence Time "Age" analysis

    I am currently modeling a watersystem with a pump with a continuous fresh source to a reservoir joined by a common main (i.e. no dedicated line to the reservoir). The system feeds a single family development. I want to check the quality (age) of the water within the reservoir, theoreticaly the...

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