You must mean south of the Canadian border...seen that here plenty of times. I don't know if it's any better or worse than weld, grooves or threads. All have their shortcomings. I have heard concerns about using them without cutting the hole, which models I can think of not possible. And another concern is the disks or fines getting left in the pipe. Of course this is an issue with welded outlets too. And I suppose to a lesser extent threads and grooves.
And for those that occasionally dabble in military they prohibit (in their code) in new but allow in existing for remodeling. Chris Cahill, PE* Senior Fire Protection Engineer, Aviation & Facilities Group Burns & McDonnell 8201 Norman Center Drive Bloomington, MN 55437 Phone: 952.656.3652 Fax: 952.229.2923 [email protected] www.burnsmcd.com Proud to be one of FORTUNE's 100 Best Companies to Work For *Registered in: MN -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, July 19, 2013 10:28 AM To: [email protected] Subject: RE: Mechanical Tees REPLY South of the border I've seen entire systems installed with nothing but mechanical tees. They didn't fabricate anything. Craig L. Prahl, CET Fire Protection CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Matt Grise Sent: Friday, July 19, 2013 11:04 AM To: [email protected] Subject: RE: Mechanical Tees REPLY I have seen them prohibited under nfpa 13 6.4.6.1 because they are not a one-piece fitting (the saddle and also the strap). I did not agree with the interpretation, but that was the given reason. Matt Grisé PE*, LEED AP, NICET II Sales Engineer Alliance Fire Protection 130 w 9th Ave. North Kansas City, MO 64116 *Licensed in KS & MO 913.888.0647 ph 913.888.0618 f 913.927.0222 cell www. AFPsprink.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, July 19, 2013 9:50 AM To: [email protected] Subject: Re: Mechanical Tees REPLY Ladies/Gentlemen: As designers/specifiers (former fitter/installer), I see no reason to prohibit mechanical tees from (vitually) any commercial project. Our PE/FPE's do not restrict their use and, frankly, they can come in pretty handy at times. If anyone knows of an actual "Code"/NFPA-13 citation, I would sure love to hear it. That said - and engineering "judgement" acknowledged - if the project spec's prohibit MT's - then they cannot be used, in my opinion. They are used on our projects all the time. Also, our inspectors (retired State Fire Marshals) have no 'grievances' against MT's. "Roust-a-Bout" fittings - now that is a different matter. Are they still used?? Regards to all, Jerry [email protected] Jerry D. Watts, SFPE President & Co-Founder ACCENT FIRE ENGINEERING INT'L. Ltd.* Santa Fe, New Mexico USA (800) 503.1961 *Licensed Fire Engineers - Architects/Inspectors/Fire Investigators: AZ CA CO NM NV NY TX UT KS MD MS _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
