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  1. ccruse

    System Head Curves for Force Main with Multiple Stations

    I have found that selecting pumps with multipule pump stations is complicated. A good approach would be to initially model the station as known inflows, instead of using pump curves, and try a variety of pipe sizes to achive a reasonable velocity of 8 ft/sec when all pumps are running. Once pipe...
  2. ccruse

    System Head Curves for Force Main with Multiple Stations

    I have a pump station design that involves two lift stations along the forcemain. I have developed system head curves for the runout conditions (each pump flowing to the discharge manhole separately) Does anyone out there have a good example of developing system head curves for force mains with...
  3. ccruse

    Sanitary Pipe Sizing

    Appreciate all the advice and insight. There is a guy at the office that has "Wastewater Collection System Modeling and Design" by Haestad. I'm going to read through it and see what I can find. When I said that I am a junior engineer, I mean that I am a first year engineering intern "EI" or...
  4. ccruse

    Sanitary Pipe Sizing

    I realized I should have posted this on the distribution thread... maybe some environmental engineers can still answer this!!!
  5. ccruse

    Sanitary Pipe Sizing

    This question my sound alittle juvenile, but Im an junior EI so I am used to getting thrashed from time to time, lol. I was wondering, what methods are used in determinng pipe sizes in gravity fed SS systems?
  6. ccruse

    Inlet Question

    Reply to TerryScan Thanks I will look into that!! At first I considered using the rational method but another EI suggested that maybe I look into TR-55. I guess I should have stayed with my first thought..
  7. ccruse

    Inlet Question

    Reply to RWF7437 1. Efficiency is equal to discharge intercepted by inlet by the total discharge approaching the inlet, correct? If so by theory the outlet could operate over 100% 2. If not the TR-55 what method should I use? 3. qp=Qu*Am*Q was taken from the TR-55 where: Qu= unit peak...
  8. ccruse

    Inlet Question

    I have a scenario where I need to verify that a proposed inlet will operate at 100% efficiency. The inlet layout consists of 4 inlets spanned over 587ft with the greatest distance between two inlets being 184ft. I would think that the steps I need to take in assuring the need efficiency would...
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