12.34 hours is a long time for the Capt. to stand and wait, then wait 2 more hours. Working backwards, if I wanted to pump it up in an hour, I'd need a 400 gpm pump that made 200#. I do have a friend and competitor 2 miles from here with 2 trailer mounted Patterson diesels he does bridge and tunnel standpipes with... All I can do is ask.
Thanks Vince and Brad. -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of Vince Sabolik via Sprinklerforum Sent: Saturday, April 17, 2021 3:20 PM To: [email protected] Cc: Vince Sabolik <[email protected]> Subject: How long to pump up a standpipe? My friend Brad Casterline wanted to offer an answer to Tom Duross' question about how long it would take to pump up a standpipe. Please note, I'm not this smart! P1=75 psi/.433=173 ft. P2=200 psi/.433=462 ft. deltaP=289 ft. V1=5000 gal/7.48=669 ft^3. P1V1=115,737 ft/ft^3, /289 ft=400 ft^3. 4 gpm/7.48/60=.009 ft^3/s. 400 ft^3/.009 ft^3/s=~12 hours. -- *Vince Sabolik* *West Tech Fire Protection, Inc.*** 11351 Pearl Road / Strongsville, Ohio 44136 Phone 440 238-4800 Fax 440 238-4876 Cell 440 724-7601 _______________________________________________ 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
