I haven’t done a lot of work in earthquake areas. NFPA 13 9.3.4.2 Unless the requirements of 9.3.4.3 through 9.3.4.7 are met, where pipe passes through holes in platforms, foundations, walls, or floors, the holes shall be sized such that the diameter of the holes is nominally 2 in. (50 mm) larger than the pipe for pipe 1 in. (25 mm) nominal to 3 1⁄2 in. (90 mm)nominal and 4 in. (100 mm) larger than the pipe for pipe 4 in.(100 mm) nominal and larger.
How does one do a sidewall sprinkler head through a concrete wall (stair, elevator, etc.) and have an escutcheon on the head side? Nominal pipe is 1”, 3” hole, 2-7/8” escutcheon. It’s gets worse if sleeves are required. Now I see Tyco and Reliable have deep escutcheons that are 3.5” which is fine if you don’t have a sleeve and are willing to have deep escutcheons. I see Argco might have some solutions but I find it odd one would have to go there for what should be a rather common problem. And if you are trying to use a recessed heads might be a listing issue? Tell me I’m missing something obvious please. Chris Cahill, PE* Senior Fire Protection Engineer Aviation & Facilities Group Burns & McDonnell P: 952.656.3652 F: 952.229.2923 [email protected]<mailto:[email protected]> www.burnsmcd.com<http://www.burnsmcd.com/> *Lic. in MN -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120105/b41cfd05/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
