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  1. lsceeng

    Well Pump/Plant Efficiencies

    After performing an in-situ pump test for a vertical turbine well pump, I have a few remaining questions. First let me explain my understanding of the fundamentals to well pump efficiency. The formula for Water Horsepower (WHP), or power imparted to the liquid by the pump, is WHP=(Q*H)/(3960)...
  2. lsceeng

    Copper Tubing: Annealed vs Drawn

    "The standard specifications call for soft temper copper for underground service and the copper should conform to ASTM B88 and ASTM 521." -Which "standard specifications" are you referring to? Which ASTM 521 spec are you referring to? How does either standard apply? (ASTM D521 - Standard Test...
  3. lsceeng

    Copper Tubing: Annealed vs Drawn

    Are there any code requirements by the Uniform Building Code or otherwise as to whether hard (drawn) or soft (annealed) copper is required for underground water service lines? The application is as follows. The project is located in California and is a groundwater well pumping station. There are...
  4. lsceeng

    Pipe/Flange Pressure Design

    I have several questions related to pipe design, specifically related to sizing of flanges and pipe thicknesses based on expected pressures. Here's an example: Say the maximum expected distribution pressure that is expected for a black steel 12" pipeline is 100 psi, and the maximum water hammer...

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