http://www.irontowerstudio.com/forum/index.php?topic=2949.0;imode
On Sun, Oct 2, 2016 at 6:27 AM, Brad Casterline <[email protected]> wrote: > Thanks for staying on me about this Travis. > > Like I said, this is so subtle as to not be accepted, by Sprinks anyway. > > For example, I took two measurements; height and length. > Where is the 'stopwatch' in that? > In fact the 'clock' is in The Law of Falling Bodies, well know for qite a > while. > > How about we meet halfway on this? I'll concede the Q,P,K, and "29 point > something times this to the that" formulas are simpler and quicker for > everday use, if you'll concede that, just like it does not hurt a training > to learn hand calcs first, it does not hurt an experienced designer to > 'see' the natural beauty at the root of sprinkler calcs, OK? > On Oct 2, 2016 8:08 AM, "Travis Mack" <[email protected]> wrote: > >> Keep it simple. You are trying to tell us that it is easier to measure >> the time it takes for stream to hit ground and distance when you "lost the >> chart?" >> >> Honestly man, learn to keep things simple. Remember the old saying, "Just >> because you can do something doesn't mean you should." >> >> If you are trying to determine flow this way because you forgot >> something, reschedule the test. Your methods are far too complicated for a >> simple task. You have way too much room for error. >> >> So be like the Disney princess: "Let it go!" >> >> 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 2, 2016, at 5:15 AM, Brad Casterline <[email protected]> >> wrote: >> >> Just one more thing and then I'll quit. >> >> "how to estimate the gpm of a flow test by yourself because you've lost >> the pitot that came with the kit, and there are no formulas in the >> standards or aps for that" >> >> t = SQRT (2h/g) >> where t is the 'time of flight' in seconds and h is the height of the >> butt in feet. >> Say h = 4ft. t=(8/32)^.5=.5 sec. >> Say the length of the stream is 20 ft. If the water went 20 ft in .5 sec >> it is going 40 ft/sec. >> A 2.5" C=.9 butt is .0307 ft^2, * 40 ft/sec=1.228 ft^3/sec, *7.48*60= 551 >> GPM. >> >> No one in their right mind would avocate basing final calcs on this. >> >> So it's an open question as to wether or not I would. . . >> >> ;) >> >> Brad >> On Oct 1, 2016 4:30 PM, "Brad Casterline" <[email protected]> wrote: >> >>> Thanks Trevor. >>> I like graphs. I'm a slow learner but i dont let that stop me. >>> On Oct 1, 2016 4:11 PM, "Brad Casterline" <[email protected]> >>> wrote: >>> >>>> 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-f >>>>> iresprinkler.org >>>>> >>>>> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum- >> firesprinkler.org >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum- >> firesprinkler.org >> >> > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > 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-)
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