Is the new fire pump to be adequate to supply the sprinkler demand only or will it also serve as an automatic standpipe water supply?
Lamar Vaughn,SET ---- "Johnson wrote: > One more piece of information. A fire pump is scheduled to be installed as > part of the project. > > Duane Johnson, PE > Program Manager > Division of the Fire Marshal (Support Contractor) > Office of Research Services > National Institutes of Health > 301-496-0487 > > > -----Original Message----- > From: Johnson, Duane (NIH/OD/ORS) [C] > Sent: Tuesday, August 10, 2010 7:52 AM > To: [email protected] > Subject: Existing standpipe in hig rise building > > Scenario: An existing high rise building is being retrofit with sprinklers. > The existing building has 6" standpipes throughout. > Question: Which of the following sections of NFPA 14 takes precedence > (5.4.1.2 or 5.4.1.3)? Or in other words, does 5.4.1.3 apply to high rise > buildings? > > > 5.4.1.2 Class I standpipe systems in buildings classified as high-rise > buildings shall be automatic or semiautomatic. > 5.4.1.2.1 In buildings classified as high-rise, all required standpipes > shall be automatic or semiautomatic, including partial height and horizontal > standpipes that serve only a portion or limited number of floors within the > building > > OR > > 5.4.1.3 Where an existing standpipe system having standpipes with a > minimum diameter of 4 in. (100 mm) is to be utilized to supply a new retrofit > sprinkler system, the water supply required by Section > 7.10<http://codesonline.nfpa.org/a/c.ref/2010_ID02001400917/sec> shall not be > required to be provided by automatic or semiautomatic means, provided that > the water supply is adequate to supply the hydraulic demand of the sprinkler > system in accordance with NFPA > 13<http://codesonline.nfpa.org/a/c.ref/NFC13/book>, Standard for the > Installation of Sprinkler Systems. > > > I have my response, but just wanted to see a technical discussion. > > Duane Johnson, PE > Program Manager > Division of the Fire Marshal (Support Contractor) > Office of Research Services > National Institutes of Health > 301-496-0487 > > _______________________________________________ > 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)
