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  1. cb1151

    Quick Response Sprinkler requirement

    Can someone PLEASE help me out here. I know in the past I've seen a clear ruling in NFPA 13 showing that quick response sprinklers are required for new construction but I can't seem to find it. The only thing I can find is under thermal sensitivity but that states for light hazard. My...
  2. cb1151

    Sapphire and Hvac Shutdown

    I have a situation where the owner wants to change the sequence of operation so that the hvac shuts down via EPO upon discharge. I do not feel like this is possible due to the time sapphire is discharged within (10 seconds I believe). The crac units could potentially recirculate air as the...
  3. cb1151

    Standard Response vs Quick Response: Visual Difference?

    Is there a way to tell the difference between standard response sprinklers and quick response sprinklers by looking at the them? My guess is by looking at the fusible link. From what I notice, standard response seems to have a thicker glass bulb. However, I'm only looking at 2 sprinklers so...
  4. cb1151

    Suspended obstructions

    I have a situation where there is suspended lighting 15" below ceiling. The lights are 1'-0" wide. By following the chart in NFPA for floor mounted/suspended obstructions I need to be 24 inches up to 30 inches away from the light in order for spray pattern to clear the fixture. Is there any...

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