At times the flow is limited by the hydrant. When higher flow rates are needed to be verified flowing of multiple hydrants is necessary. Sometimes it's obvious that the municipal source can produce more.
Use the one test hydrant for the pressure readings and then open the first hydrant, get your pressure and flows and then open the second hydrant and record the same. Of course your pressures will drop as you know once you start seeing the higher flow rate. I'm assuming you've already gone through your piping network and massaged everything you can out of the pipe sizes to maximize your resources. I only ask because you'd be surprised how many designers let the computer pick sizes and by doing so they have over sized pipe that isn't necessary and just costs their company extra money equaling reduced profits. They just don't know how to read the calcs and understand what it all means. They just know how to click on the "calculate" button on their software. And for others, adding a pump does not create more water. A pump will not add 31 gpm to the source. Craig L. Prahl, CET Fire Protection Group Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [EMAIL PROTECTED] http://www.ch2m.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joe Burtell Sent: Wednesday, July 30, 2008 1:09 PM To: [email protected] Subject: RE: Water Supply I know and it works, I am below the curve. The AHJ is not approving because I have exceeded the flow test by 31 gpm. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Richard Carr Sent: Wednesday, July 30, 2008 10:43 AM To: [email protected] Subject: RE: Water Supply If you plot it out on a curve you will have more than 1210 but at a lower residual pressure. Richard Carr, SET Design Manager Associated Sprinkler Co., LLC 336.373.3901 ext 217 [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joe Burtell Sent: Wednesday, July 30, 2008 11:58 AM To: SprinklerFORUM Subject: Water Supply I have a project where the system demand with hose allowance exceeds the city supply by 31 GPM. It's still under the curve but the city flow test was 1210 and my system demand is 1241. Is there anything in the codes that allows me to exceed the city capscity? Best regards, Joe Burtell, SET, CFPS Burtell Fire Protection, Inc. Phone: 406.652.7697 Fax: 406.652.7743 Cell: 406.861.4507 _______________________________________________ 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) This email and any attached files are confidential and intended solely for the intended recipient(s). If you are not the named recipient you should not read, distribute, copy or alter this email. Any views or opinions expressed in this email are those of the author and do not represent those of the company. Warning: Although precautions have been taken to make sure no viruses are present in this email, the company cannot accept responsibility for any loss or damage that arise from the use of this email or attachments. _______________________________________________ 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) _______________________________________________ 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) _______________________________________________ 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)
