A fitter asked us how long a branch line has to be before it requires end of the line restraint. A fire marshal told him he could never find an answer so they put in place 13ft or longer.
9.3.6.3 The end sprinkler on a line shall be restrained against excessive vertical and lateral movement. In my opinion, the way this is written, all branch lines are to have them, which brought up the next debate; 3.5.1 Branch Line - The pipes supplying sprinklers, either directly or through sprigs, drops, return bends, or arm-overs. Would a 1x1'-0 pipe coming from a main supplying a single sprinkler through a return bend (or any configuration) be a branch line, and if so would it require an end of the line restraint? The definition says a pipe supplying sprinklers so this would qualify because an arm-over is defined as coming from a branch line. If this is the case, I think a limit of length is required to be put on branch lines requiring end of the line restraint. Thank You, Bobby Gillett Sr. Project Manager Key Fire Protection, Inc. (731) 424-0130 office (731) 424-9285 fax (731) 267-4853 cell <mailto:[email protected]> [email protected] _______________________________________________ Sprinklerforum mailing list http://lists.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)
