this morning Andrew Weisfield wrote. "So, if I have a smooth ceiling with concrete structural members spaced 10 feet apart in one direction and 20 feet apart in the other direction forming 200 square foot rectangular areas, what is the maximum deflector distance? What am I missing? The 22 inch distance may allow us in these situations to eliminate a lot of sprinklers by applying the various obstruction rules."
You are not missing anything. What you describe is panel construction. Perhaps it is not too common today. We have such a ceiling in one of our buildings constructed in the 1940's. Of course back then they also required adjacent lines to have the heads staggered. So we have a staggered pine tree sprinkler layout with deflectors at about 20 inches below the deck. Panels are formed by concrete beams into about 270 square foot bays. It has been in the code for that many years. It is still applicable. John Hoffman, P.E. Fire Protection Engineer Facility Engineering Services, KCP, LLC 2000 E. 95th Street Kansas City, MO 64131 Ph: 816-997-7213 _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
