Not many responses to this one. Here is what the answer is in Seattle. We would allow multiple high rise towers on a single property to share a tank/pump system if the supply to each tower was NOT underground. The supply would have to be through a utilidor or something comparable capable of withstanding the movement expected in an earthquake, or through a common garage, or through the connecting breezeways etc. - just not underground.
We allow the single pump/tank with auto fill as standard practice. There are no requirements in the codes or NFPA for redundant fire pumps. Regards, Rich Richardson Seattle Fire Department >>> Perry Barber <[email protected]> 08/10/2009 12:14 >>> I would like to get input on the secondary water supply requirements for high rise buildings in seismic design category C, D, E or F. I am working on a project for a hospital that has a existing patient tower with a secondary water supply tank and fire pump built under the 2003 International Fire Code. The hospital wishes to build additional high riser towers (2 more) all connected to the main hospital building, in essence still being one building. Are additional secondary water tanks and fire pumps need for each new high rise or can they be fed from the existing tank and pump and still meet the intent of the code requirement? Also, the existing design uses a 33,000 gallon underground water tank and a vertical turbine pump. The tank uses float sensors to determine the water level within the tank and an automatic refill system from the city water supply. There is not a second fire pump. Does this meet the intent, in other words are two pumps need - one for the primary and one for the secondary water source? -- Perry Barber Raleigh, NC _______________________________________________ Sprinklerforum mailing list http://lists.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 http://lists.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)
