Wow Ron thanks! That pow thing blows my mind but that's ok. I might seem overly sensatitve about this but it is one of the two or three 'light bulb' moments I've had in my sprinkler career. I don't know if you have heard designers say things like, "suddenly it just clicked", or not. I have, but I guess I'm the only one who heard gravity click with sprinkler calcs. Before that Q,K,P was so mysterious, although I could sleep at night, it was fitfull.
Thanks again man, Brad On Oct 1, 2016 3:54 PM, "rongreenman ." <[email protected]> wrote: > Brad- > > 919gpm using the standard formula by hand. The only trick is the square > root of P which may have to be bracketed if it's not one you know. I can > use a simple calculator for that though. Took about 45 seconds with a > calculator with a square root function. A couple of minutes if i need to > bracket and less than the 45 seconds if its a square root I know (like for > 30). > > And here is the calculator tape for the truly annal: > > pow(30,1/2) * 6.25 * 0.9 * 29.83 > = 919.04421883382455 > > 2.5 squared is just one of those I have memorized. > > On Sat, Oct 1, 2016 at 1:35 PM, Trevor Spain <[email protected]> > wrote: > >> If you need to be able to print a report or save a report as a pdf, >> download the free hydrant flow test program from here: >> >> http://igneusinc.com/files/files.html >> >> Trevor Spain >> >> >> On 10/1/2016 2:03 PM, Mark Phillips wrote: >> >>> http://www.firehydrant.org/info/hycalc.html >>> >>> Love it and used it for years >>> >>> >>> Sent from my Verizon 4G LTE Droid >>> On Oct 1, 2016 2:52 PM, Travis Mack <[email protected]> wrote: >>> Follow the formula in the standards. >>> >>> 29.83 x hydrant coefficient x pumper modification x diameter x diameter >>> x sqrt (pitot pressure) >>> >>> Keep it all simple. No need to overcomplicate everything. >>> >>> There are even several apps to put in your phone to do this stuff. >>> Keep it all simple. >>> >>> Travis Mack, SET >>> MFP Design, LLC >>> "Follow" us on Facebook: https://www.facebook.com/pages >>> /MFP-Design-LLC/92218417692 >>> Send large files to MFP Design via: >>> https://www.hightail.com/u/MFPDesign >>> >>> Sent from my iPhone >>> >>> On Oct 1, 2016, at 11:35 AM, Brad Casterline <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> >>> My pleasure Jeff, thanks for saying. >>> >>> On Oct 1, 2016 1:32 PM, "Jeff Normand" <[email protected]<mailto: >>> [email protected]>> wrote: >>> Thanks for sharing Brad. >>> >>> On Sat, Oct 1, 2016 at 1:28 PM, Brad Casterline <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> Say it's a 2.5" butt (small, smooth and well rounded my personal >>> favorite) so C=.9. >>> >>> ((2.5/24) ^2) * PI = .034 ft^2. >>> .034 * .9 = .0307 ft^2. >>> >>> Say pitot = 30 PSI. >>> 30/.433=69.284 ft (h). >>> v=(2gh)^.5=(2*32.2*69.284)^.5=69.8 ft/sec. >>> .0307 ft^2 * 69.8 ft/sec = 2.05 ft^3/sec, * 7.48 * 60 = 920 GPM. >>> >>> That's not too shabby! >>> >>> Brad >>> >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected]<mailto:Sprinklerforum >>> @lists.firesprinkler.org> >>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-f >>> iresprinkler.org >>> >>> >>> >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected]<mailto:Sprinklerforum >>> @lists.firesprinkler.org> >>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-f >>> iresprinkler.org >>> >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected]<mailto:Sprinklerforum >>> @lists.firesprinkler.org> >>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-f >>> iresprinkler.org >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected] >>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-f >>> iresprinkler.org >>> >>> >>> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-f >> iresprinkler.org >> > > > > -- > Ron Greenman > > 4110 Olson Dr., NW > Gig Harbor, WA 98335 > > [email protected] > > 253.576.9700 > > The Universe is monstrously indifferent to the presence of man. -Werner > Herzog, screenwriter, film director, author, actor and opera > director (1942-) > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > >
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