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Recent content by docmartin

  1. docmartin

    I need fire system symbols

    Thanks for the help Bryan, Now, to break down what I need more specifically, I'm looking for the symbol for a multimatic control valve, a PIV ,fire hose, flow switches, that sort of hardware. Once again, thanks you for the help
  2. docmartin

    I need fire system symbols

    Hello; I am updating the fire lines and system drawings in a plant and I know that there is a code for the symbols to use. The problem is, I haven't been able to find a site that will give a description of the appropriate symbols to use and their shape. Can anyone direct me to a source that...
  3. docmartin

    weirs

    Hello all; My question for today is this: I am putting a rectangular weir into a u drain to measure the amount of fluid flowing in the drain. The water flows very, very quickly without the weir, so is a velocity approach correction needed for the speed of the water once the weir is put in...
  4. docmartin

    head loss and also discharge of a tank througha vertical pipe

    I have two different questions. First one goes like this. I have need to size a pump and am calculating the head loss. The major requirement is that there must be 70psi coming out of the discharge end into atmospheric pressure. There is also a 35 foot elevation change. Am I correct in saying...
  5. docmartin

    application of weirs

    Does anyone know where discharge coeffients for a sharp nosed broad crested weir can be found. Also, I need to put a baffle in a tank to reduce turbulance before a pump intake, and I know that there must be a certain amount of clearance. Does anyone know where I can find some information on...

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