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  1. #1
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    Default Pump discharge pressure for highris.

    This one is for pump operators or anyone who has the answer. How do you determine what the pump discharge pressure should be for the apparatus pumping a highrise. This is for buildings with and without building system pumps.


  2. #2
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    Whatever you need for the nozzle then five lbs per floor. Is the down and dirty.

    or a more detailed method:

    EP = FL + NP + Appliance + Elev.

    Engine Pressure

    Friction Loss

    Nozzle Pressure

    Appliance

    Elevation
    Last edited by Geinandputitout; 07-01-2007 at 04:21 PM.

  3. #3
    MembersZone Subscriber fireslayer1237's Avatar
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    Default

    Quote Originally Posted by Geinandputitout View Post
    Whatever you need for the nozzle then five lbs per floor. Is the down and dirty.

    or a more detailed method:

    EP = FL + NP + Appliance + Elev.

    Engine Pressure

    Friction Loss

    Nozzle Pressure

    Appliance

    Elevation

    that's pretty much it just going to add one more thing. 25 psi for friction loss in stand pipes. plus then the 5 for every floor.
    FOOLS
    RFB-KTF-DTRT

  4. #4
    This space for rent NYSmokey's Avatar
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    Default

    Found this in a Google search. I'm sure the FDNY brothers can tell you if it has changed since 1997. Page 8 of the document refers to pump pressures for high rises.

    http://www.firetactics.com/HIGH-RISE.pdf
    Tom

    Never Forget 9-11-2001

    Stay safe out there!

    IACOJ Member

  5. #5
    MembersZone Subscriber JHR1985's Avatar
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    remember unless its designed for it, dont pump it over 200 psi because it will damage it

  6. #6
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    So what if the pressure requirements need to be over 200 psi to deliver the water to put the fire out? I posed the same question to several fire protection system contractors. They all agreed that the potential damage that could ocurr from overpressureization would most likely be less than the cost of the building if it burned down. The probable damage would be leaking joints not exploding pipe. The IC would be the one to make the decision on what to do in this situation.

  7. #7
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    No one has mentiond how to calculate the PDP for a building that has its own fire pump. It is a whole new ball game. Any thoughts out there?

  8. #8
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    Talking

    are you talking about pumping to the sprinkler system or to the standpipe? Min of 150 psi to the FDC. If its 10 floors or higher add 5 psi for each floor after the tenth up to the fire floor. Hope this helps. As for the pump it should have a pressure that it should be giving on it. I think it would be on a case by case basis for a fire pump

  9. #9
    MembersZone Subscriber JHR1985's Avatar
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    So what if the pressure requirements need to be over 200 psi to deliver the water to put the fire out? I posed the same question to several fire protection system contractors. They all agreed that the potential damage that could ocurr from overpressureization would most likely be less than the cost of the building if it burned down. The probable damage would be leaking joints not exploding pipe. The IC would be the one to make the decision on what to do in this situation.

    IF that is a possible problem, then the building owners need to put a fire pump(s) in to supplicate the pressure problem. If not, hey, screw em. They didnt want to build their building properly, not my fault it burnt down.

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