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  1. FIRESPRINK

    CPVC pipes sizing for Fireprotection.

    I believe what Travis is saying is that provided your existing fire sprinkler system is the same material as the extension, and the occupancy of the areas is the same, and the existing system was properly calculated originally, then using "equivalency" you may be able to size the new fire...
  2. FIRESPRINK

    What is going on here? Fire Sprinkler Lawsuits concerning CPVC pipe

    I realize that this thread is from 11/16, but as a contractor with more than 38 years experience I wanted to chime in. I have attended multiple presentations from various CPVC producers and vendors. I would say that all of them are aware of these issues and are interested in working through it...
  3. FIRESPRINK

    Fire pump flow

    FYI-I just completed a project where the public water supply entered a 400K SF building, went through a booster pump, then exited to supply a fire loop with exterior fire hydrant protection, the loop also supplied the interior fire sprinkler systems. There was no enforceable building and/or...
  4. FIRESPRINK

    NFPA 13 22.4.4.6

    I am not sitting with my NFPA 13 tonight but have reviewed this with designers. As you indicate, I recall that the approach is an RA of the minimum required size (1500 SF in an LH or OH occupancy) or larger, you may omit the rooms protected with a single head from WITHIN the RA. Provided one...
  5. FIRESPRINK

    what would cause low pressure in the system for the fire pump

    We had the exact scenario discussed, a private fire hydrant downstream of the pump was having water removed and the main booster pump would cycle on. However with what is being described, I would consider any check valves on the booster pump suction line. If there is a backflow prevention...
  6. FIRESPRINK

    On Line Fire Pump Piot Flow and Curve Calculators

    Recently I went through this myself. I have three fire sprinkler software packages, but none fit my needs as regards flow tests. My solution, I wrote a flow test spreadsheet program using MS Excel and in two pages it prints out the flow test results and an N185 chart. The hard part is the N185...
  7. FIRESPRINK

    fire flow vs. fire hydrant

    The fire flows are often looked at with disdain, however as previously posted they are at 20-psi!!! Also, there are a number of ways to reduce the fire flow through the IFC, again the fire flow is still only measured at 20-psi. Your building code must have adopted NFPA 1 in order to refer to...
  8. FIRESPRINK

    Pump test

    I went through most of this thread, but will add that the flow test meters I have used provide specific dimensions to meet for distances from fittings and from the meter. I have installed over 30 flow test meters, we have used them for startups and annual inspections since 1994. They must be...

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