You need to consult your local AHJ concerning Fire Flow requirements since they originate in the appendix of the Code which has to be adopted separately. It is not automatic. Plus if the building is sprinklered you can reduce the amount of fire flow considerably.
Craig L. Prahl, CET Fire Protection Specialist 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 Travis Mack, SET Sent: Thursday, April 08, 2010 4:17 PM To: [email protected] Subject: Re: Water Supply If there are no hydrants/hose valves downstream of the tank, you don't need the 250 gpm added. If there are hydrants downstream of the tank, are you going to have to meet site fire flow requirements per the IFC? If you have to do that, your tank size is going to be huge! On 5/9/2010 12:10 PM, A.P.Silva wrote: > When sizing a water tank, > > OH design requires 60 to 90 minute water supply for sprinklers > > Is 250 gpm outside hose allowance also 60 to 90 minutes? > > It seems to me they are both independent requirements. There will be a > time lag between the two and the fire department could be drawing out > more than the 250 gpm, for a longer or shorter duration. The question > is will the intent of the code be satisfied if the total water > requirements (sprinklers and hose allowances) be supplied for 60 to 90 > minutes? > > Tony > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
