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  • Users: chaz12
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  1. chaz12

    Applicable NFPA standard

    We have a 5 story building which will have sprinkler protection and standpipes. 1st story is parking and retail, 2nd story - 4th story are apartments, 5th story is multi-purpose and fitness rooms. Total building height is 57 feet. Does the sprinkler system need to be NFPA 13 or 13R, or a...
  2. chaz12

    How good are vertical in line fire pumps

    We have some feedback on a building where we specified a vertical in line fire pump, to the effect that a horizontal split case pump is a 'better' pump. The two points mentioned were difficult maintenance and corrosion problems on the vertical in line. Any opinions on these issues or others...
  3. chaz12

    Fire pump room requirements

    Does NFPA 20 require that the pump room be dedicated exclusively to the fire pump equipment? Due to space limitations, we wanted to have a pump room that would contain the hot water and chilled water pumps along with the fire pump. The room is 2 hour rated and will be sprinkled. Thanks Chaz
  4. chaz12

    Domestic demand vs. fire demand

    I have a college laboratory building with a combined fire/domestic water supply entering the building and then splitting. Fire demand is governed by 2 standpipes at 750 gpm. Sprinkler demand is O1 which ends up less than the standpipes. Domestic demand for the building is also 750 gpm. Does...
  5. chaz12

    FM200 and HVAC system dampers

    A variety of steps are always taken to seal a room where there is a clean agent suppression system like FM200 installed. One action is to put automatic shut-off dampers in HVAC ducts coming into or out of the room. Are these requirements actually contained in any codes? I do not find them...
  6. chaz12

    Sprinklers for diesel pump house

    I have a 1500 gpm diesel fire pump in a dedicated pump house with 300 gal fuel storage. The pump water supply comes from a 250,000 gal storage tank. The tank is filled with a 6" line off the city main which flowed 1900 gal at 72 psi static, 64 psi residual. I am uncertain about parts of the...
  7. chaz12

    Estimating system water volume

    Are there any rules of thumb that would allow a consulting engineer to estimate the water volume in a preaction sprinkler system before the actual system layout is designed by the sprinkler contractor. I need an estimate to define the HP of the air compressor for the system Thanks Chaz12
  8. chaz12

    nfpa 14: standpipe drain risers

    NFPA 14 requires a 3" drain riser adjacent to the standpipe if you have pressure limiting hose valve connections, so that the hose valves can be tested. I have a 5 story building with an automatic wet standpipe system, and it does need pressure limiting hose valves. I don't quite get how the...

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