The NFPA 13 handbook for section 8.2.1 states, at least in 2002 & 2007, that as long as the floor area of each floor (even in a high rise building) is under 52,000 sq. ft., the building could be protected by a singe system riser. Floor control valves and waterflow devices are not specifically required for each floor in a multistory building. Of course, if you are required to follow NFPA 101, that would supersede.
Duane Johnson, PE Program Manager Division of the Fire Marshal (Support Contractor) Office of Research Services National Institutes of Health 301-496-0487 "Protecting Science - One Sprinkler at a Time" -----Original Message----- From: Roland Huggins [mailto:[email protected]] Sent: Tuesday, January 18, 2011 10:26 AM To: [email protected] Subject: Re: Hydraulic Calcs It's amusing that an exception provides more clear guidance than the IBC of every day systems. The LSC is nice and explicit but it is not adopted in about 20% of the states. Anything just in the IBC or 13 for all systems in a hi-rise? Roland On Jan 14, 2011, at 7:59 AM, Jim Davidson wrote: > Roland, > > NFPA 101 paragraph 11.8.3.1 states "High-rise buildings shall be > protected throughout by an approved, supervised automatic sprinkler > system in accordance with NFPA 101, Section 9.7. A sprinkler control > valve and a waterflow device shall be provided for each floor. > > As per the 2006 IBC paragraph 403.3 "Reduction in fire resistance > rating" states "The fire-resistance-rating reductions listed in > Sections 403.3.1 and 403.3.2 shall be allowed in buildings that have > sprinkler control valves equipped with supervisory initiating > devices and water-flow initiating devices for each floor". Most > architects and building owners use this section of the IBC to reduce > the thickness of fire proofing material applied to the structural > steel members of the thickness of concrete between the exterior of a > concrete structural member and the steel bar reinforcement. > > We all need to pay attention to what are the legal codes being > enforced in a jurisdiction, especially when the Fire Marshall is > enforcing the NFPA codes and the building department is using the IBC. > > Have a fire safe day. > > Regards > > Jim > > > Jim Davidson > > Davidson Associates > Fire Protection * Medical Gas * Code Consulting > 302-994-9500 Fax:302-234-1781 > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected] > ] On Behalf Of Roland Huggins > Sent: Thursday, January 13, 2011 3:46 PM > To: [email protected] > Subject: Re: Hydraulic Calcs > > I concur with everything you said and the alarm requirements are very > explicit regarding on supervision IF a component is present. Where > does the IBC say you have to have a water flow switch on EVERY floor > of a hi-rise? > > Roland > > On Jan 13, 2011, at 12:28 PM, Jim Davidson wrote: > >> In the IBC (2006 Edition) paragraph 903.4 "Sprinkler system >> monitoring and alarms", states; >> All valves controlling the water supply for automatic sprinkler >> systems, pumps, tanks, water levels and temperatures, critical air >> pressures and water-flow switches on all sprinkler systems shall be >> electrically supervised. And paragraph 903.4.1 Signals, requires >> that; >> Alarm, supervisory and trouble signals shall be distinctly different >> and automatically transmitted to an approved central station, remote >> supervising station or proprietary supervising station as defined in >> NFPA 72 or, when approved by the fire code official, shall sound an >> audible signal at a constantly attended location. >> >> Paragraph 903.4.3 "Floor control valves" states that; >> Approved supervised indicating control valves shall be provided at >> the point of connection to the riser on each floor in high-rise >> buildings. >> >> The IBC does require the supervision of fire sprinkler systems >> especially where IBC sprinkler trade off are used in the design of >> the building. >> >> Have a fire safe day. >> >> >> >> Jim Davidson >> >> Davidson Associates >> Fire Protection * Medical Gas * Code Consulting >> 302-994-9500 Fax:302-234-1781 >> > > _______________________________________________ > 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) _______________________________________________ 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)
