If the bulk of the system is being replaced we treat it as a new system subject to current requirements. This happens often for sprinkler systems under piers where the lifetime is limited.
Rich Richardson Seattle Fire Department -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: Wednesday, January 12, 2011 11:31 To: [email protected] Subject: RE: Hydraulic Calcs If a system is installed that is an exact duplicate of an existing system, which it is to replace, is that considered a new system under the Code or a "repair" of a system under 25? Where is the cut-off between the two? How would any of the AHJ's out there address this? Now George, supposed your building has 12ft storage of expanded plastics or flammable liquid storage? Most likely the pipe schedule system is not going to be able to protect those occupancies. Would you swap the system old for new as it was installed? How would the attorney for the plaintiff react to that? I didn't even bring up the issues about 3/4", 3-1/2" and 5" pipe. At 12:33 PM 1/12/2011, you wrote: >So you run new UG into a building that was legally pipe schedule >because the calc (that wasn't required under the valid but old >design criteria) doesn't work? It doesn't have to, its designed to >the applicable code at installation. > >George Church' >Rowe Sprinkler >[email protected] >570-837-7647 > >-----Original Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of Todd Williams >Sent: Wednesday, January 12, 2011 12:20 PM >To: [email protected] >Subject: Re: Hydraulic Calcs > >Ok, so in Doug's situation, it constitutes a new installation and >not repair work (based on your first statement) and it is based on a >prior design. However, as a new installation wouldn't the design >need to meet current Codes irregardless of when the design was done >and probably require hydraulic calculations? > Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ 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)
