A problem I've run into with people, other than the designer, performing the flow tests will not take into account elevation differences. I'm not sure what area of the country you are in but if it's hilly or mountainous region chances are they could've provided you with flow data from a hydrant located downhill of the actual job site (which could've been the nearest hydrant).
For the life of me, I cannot find any 'bucket test' requirement in 13d or R am I going blind or is it a local requirement? -B- On 4/8/08, Ron Greenman <[EMAIL PROTECTED]> wrote: > > Reed, > > No problem. I just want to make sure the right Ron that was wrong gets all > the credit. > On Apr 8, 2008, at 10:09 AM, Reed Roisum wrote: > > Sorry Ron G., I'm not harping on your little mistake...I posted this a > > half an hour ago before anyone else replied. > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Reed > > Roisum > > Sent: Tuesday, April 08, 2008 11:41 AM > > To: [email protected] > > Subject: RE: Failed Bucket Test > > > > I believe Ron's math is correct. 57.7' of elevation x .433 psi/ft = 25 > > psi > > > > Reed A. Roisum > > Fire Protection Technician > > NICET Level III > > > > Ulteig Engineers, Inc. > > 3350 38th Avenue South > > Fargo, ND 58104-7079 > > > > Direct Number: 701.280.8580 > > Mobile: 701.212.8810 > > Main Office: 701.280.8500 > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Ron > > Greenman > > Sent: Tuesday, April 08, 2008 11:13 AM > > To: [email protected] > > Subject: Re: Failed Bucket Test > > > > Ron, > > > > Check your math: 25.0 x 0.433 = 10.825 > > > > On Apr 8, 2008, at 8:47 AM, Fletcher, Ron wrote: > > > > 25 psi equals 57.7 feet of elevation and partially closed valves can > > > account for a reduced static pressure when dealing with city water > > > mains. > > > > > > Ron Fletcher > > > Aero Automatic > > > Phoenix, AZ > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On Behalf Of Ron > > > Greenman > > > Sent: Tuesday, April 08, 2008 8:32 AM > > > To: [email protected] > > > Subject: Re: Failed Bucket Test > > > > > > Brian, > > > > > > Static doesn't change, even with a blockage (recovery time is slower > > > but > > > eventually reaches the pre-recorded pressure--hence the value of a > > > main > > > drain test), unless the original test was done during off-peak and > > > your > > > bucket test was done during peak, there is a pump involved that is not > > > coming on or has been removed from service (your bucket test may not > > > have enough demand to fire it up but a hydrant test would--this begs > > > the > > > differences in static), the grid has been changed and the source, if > > > gravity, is lower, relative to the site, than before, the level of the > > > tank was lower during your test (25 psi equals a little less than 11 > > > feet) or the guy that produced the original numbers didn't know what > > > he > > > was doing (I got a report once that showed the residual pressure and > > > velocity pressure to be the same--the water guy wouldn't budge). If > > > you're in a residential area I'd look at the time of day and time of > > > year the test was done as well as the area, read grid, growth since > > > the > > > time the test was done. Mid day and mid night are off peak times as is > > > winter in general during peak. The tanks may be low and your test may > > > have been done during or at the end of morning peak or the beginning > > > of > > > evening peak. The original test may have been done during summer at > > > midnight when usage was down and the tanks freshly replenished for > > > tomorrow's lawn watering. Lots of possibilities. I think our reliable, > > > automatic water supplies are less than reliable but the alternative > > > seems to be stored water and pumps--extra equipment to fail. > > > > > > On Tue, Apr 8, 2008 at 7:22 AM, Brian Harris > > > <[EMAIL PROTECTED]> wrote: > > > > > > > > > > > > > > > > > > > > -- > > > Ron Greenman > > > at home.... > > > _______________________________________________ > > > Sprinklerforum mailing list > > > [email protected] > > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > > > To Unsubscribe, send an email > > > to:[EMAIL PROTECTED]<[EMAIL PROTECTED]> > > > (Put the word unsubscribe in the subject field) > > > > > > _______________________________________________ > > > Sprinklerforum mailing list > > > [email protected] > > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > > > To Unsubscribe, send an email > > > > > to:[EMAIL PROTECTED]<[EMAIL PROTECTED]> > > > > > (Put the word unsubscribe in the subject field) > > > > > > > Ron Greenman > > ...at home > > > > > > > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > To Unsubscribe, send an email > > to:[EMAIL PROTECTED]<[EMAIL PROTECTED]> > > (Put the word unsubscribe in the subject field) > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > To Unsubscribe, send an email > > to:[EMAIL PROTECTED]<[EMAIL PROTECTED]> > > (Put the word unsubscribe in the subject field) > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > To Unsubscribe, send an email > > to:[EMAIL PROTECTED]<[EMAIL PROTECTED]> > > (Put the word unsubscribe in the subject field) > > > > Ron Greenman > ...at home > > > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED]<[EMAIL PROTECTED]> > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
