I was driving down the highway the other day when I passed a job I did about 4 or 5 years ago, a dry system (4"main w/2" branch lines) over a covered play area outside an elementary school. I had some reservations at the time but was told to follow the plan with the materials provided. What I was concerned with at the time was installing Sammy screws vertically into boxed steel beams with no way to reach a back nut to install it. I had to drill pilot holes and oil the threads to help keep the Sammys from breaking off. The other problem I did not realize at the time but have become aware of through my parasitic leaching from this remakably informative discussion group. Other than the 4" rings on the main, all of the hangers are the split-ring type. I remember reading here that they do not meet the requirements of NFPA 13 for hanging pipe. Call me paranoid but I think that this system could fall given the right set of circumstances. Remember, this system hangs above small children at play. Am I obligated to inform the AHJ or some other entity?
Thomas Watt A parasite/fitter/foreman (laid-off again) Orlando, Florida _______________________________________________ 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)
