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  1. RealKayfactor

    Combined system - Sprinkler ESFR and IN-rack with Yard hydrant - consider both flowing or one system

    Hi Guys, back with silly questions. This problem always stumps me - I have a system which will serve hydrants on the plot + Sprinkler ESFR and In-rack system - for the sprinkler system I have considered Inside+outside hose stream allowance - do I still need to consider the hydrant allowance of...
  2. RealKayfactor

    Determining maximum number of sprinklers on a main - hydraulic method

    Thanks all. In such a case limiting factor to determine appropriate size through the hydraulic calculation will be velocity ? Capped at 20 - 30 ft/s? and Yes, the pressure.
  3. RealKayfactor

    Determining maximum number of sprinklers on a main - hydraulic method

    Hi Guys, This has been bothering me a lot recently. It's either I am just missing a very simple method or its much more complex. NFPA13 pipework schedule for OH shows 275 sprinklers on a 6in pipe is the maximum otherwise use hydraulic calculation to size pipework. I definitely know how to do...

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