Using the FDC (equiv length of 100 ft) with a 4" Storz and 100 ft of 4 inch hose (and a very conservative C value of 0.8, the required pressure at the riser is around 36 psi. Using he same FDC but flowing 2 - 2.5" outlet and NO hose, the riser pressure is around 25 psi. If you add 100 ft of 2.5" hose, it's around 137 psi
Roland Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org On May 13, 2013, at 2:39 PM, Ralphy Henderson <[email protected]> wrote: > I have 68 psi at 1570 gpm... > > > > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
