Jan 2, 2019 · If a pipe supplying branch lines has a sprinkler on it, is it sill a cross main? Does it require seismic restraint? Or, is it now a branch line as well?

Nov 29, 2023 · Secondary main/back main, sometimes I will call the "dead" main. For the armover, I agree, however if it goes UP and over, we'll usually call them a "gooseneck" (or …

Dec 26, 2023 · In a sprinkler system, the feed main is the primary pipeline delivering water from the source, and the cross-main branches off from it to distribute water to the branch lines in …

PRIMARY CROSS MAIN - the cross main in a gridded piping system which is supplied directly by a feed (bulk) main. SECONDARY CROSS MAIN - the cross main in a gridded piping system …

Aug 28, 2019 · Feed mains (defined as: “that portion of standpipe system that supplies water to one or more standpipes”) and branch lines (defined as “a piping system, generally in a …

Jul 31, 2018 · What Does Feedermain Mean? A feedermain is a type of pipeline used in the distribution of water, oil, or gas to homes, businesses, and communities. It is generally used to …

Apr 13, 2020 · It does supply individual branch lines and it does supply sprinklers directly (or through sprigs, not visible in your drawing). However, since it is at least a cross main and …

Jan 31, 2019 · There are similarities to the NFPA Fire Protection Handbook, but also important differences. The FM handbook focuses on property protection and takes more of an …

The portion of a standpipe system that supplies water to one or more standpipes. A type of feed main supplying only the upper zone (s) of a standpipe system ... The pipes supplying cross …

The piping system, including the water mains to the building, the riser, feed main, cross main, and sprinkler branch lines, along with associated valves, fittings, and couplings, make up the water …