multiple parameters are required in order for the requirement for listed sprinklers to apply. Obviously must be a concealed space no more than 36 inches from deck to deck but specifically must have a combustible upper surface with wood trusses or solid wood joist and be horizontal. ALL OF THOSE PARAMETERS must be in place. The really interesting part is that if it contains composite wood joists and one elects to use a listed sprinkler (since they work better in since narrow spaces), 8.15.1.7 allows their use without applying the listing requirement for the channels to be filled with insulation.
Roland On May 14, 2010, at 9:40 PM, A.P.Silva wrote: > > NFPA has requirements for combustible concealed space sprinklers. > However, > the TYCO CC sprinklers have their own restrictions on the > application. Such > as, to be used for light hazard only. If used with TJI's, the TJI > space has > to be filled with non-combustible insulation etc. What happens if > these > restrictions don't apply. Use standard heads? Or use CC heads > regardless, as > they are required by NFPA? > > What I have is a 24" to 36" deep crawlspace, the ceiling of which > comprises > of TJI's which are exposed to the space below. The insulation is on > the > floor and not in the TJI space. The building is a school, but specd. > To be > designed for OH 1. Any comments? > > Also, any other manufacturer's for CC heads? > > 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)
