What is the opinion of the group, when you have 1" wide metal slats, 4" deep, & 6" on center. Sprinklers are installed above slats, in a ACT ceiling, 14" above the top of the slats. Are these an obstruction? According to NFPA 13 2019 (9.3.10) open grid ceiling, you need 18" minimum at a 10'x10' spacing, and there is only 14" Or can 10.2.7.2.1.3, 3x rule apply? 4" deep times 3 = 12"
Dennis Wilson Blackhawk Sprinklers 1-319-266-7721 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
