No the mech tees weren't the only thing that made it look like junk and no I don't think there's anything wrong with using them in the proper application, but for a new install I don't believe the whole system should be done that way. It made it look like a second class install.
Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Chris Cahill Sent: Tuesday, May 12, 2009 12:34 PM To: [email protected] Subject: RE: Galvanized pipe - threaded reducer tees vs. thread-o-lets "Installation looked like @#$%!. BTW: this wasn't in the U.S. This could have been the basis for a book on how not to install sprinkler systems, and it would have been a BIG book." You seem to link this thought to the mech tee discussion. I'm assuming it didn't look like this just BECAUSE of mech tees. There were other things that made it look like @#$%!? In theory the method you described isn't inherently wrong, right? And no that's not our style and didn't do this one and have never done one like that (at least yet). Guess I'm just curious today. Chris Cahill, P.E. Fire Protection Engineer Sentry Fire Protection, Inc. 763-658-4483 763-658-4921 fax Email: [email protected] Mail: P.O. Box 69 Waverly, MN 55390 Location: 4439 Hwy 12 SW Waverly, MN 55390 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, May 12, 2009 11:15 AM To: [email protected] Subject: RE: Galvanized pipe - threaded reducer tees vs. thread-o-lets A lot of new installs will not want to see mech. tees. The impression is that someone just slapped together the system and it doesn't appear that they thought about fabrication and this is a field routed system, not engineered. For renovations or minor system alterations they are generally accepted without question. I just saw a project with several hundred thousand sq. ft. under roof where all the outlets were mech. tees basically because the contractor gets bulk pipe shipped to the site, they cut to length and put outlets where they think necessary regardless of what was shown on the design drawings. No real fabrication at all. Threading machine and a groover on site with a few port-a-bands and they are set to go. Installation looked like @#$%!. BTW: this wasn't in the U.S. This could have been the basis for a book on how not to install sprinkler systems, and it would have been a BIG book. Craig L. Prahl -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Thom McMahon Sent: Tuesday, May 12, 2009 12:01 PM To: [email protected] Subject: RE: Galvanized pipe - threaded reducer tees vs. thread-o-lets If as you say the client doesn't want galvanized clamp on tees, which I consider the best solution, the other consideration is installation labor. 6" threaded is a lot of labor in the air, and difficult to repair a leak at test time. Before I went that route I'd sure look at 6x6x2" GV tees. Thom McMahon, SET Firetech, Inc. 2560 Copper Ridge Dr P.O. Box 882136 Steamboat Springs, CO 80488 Tel: 970-879-7952 Fax: 970-879-7926 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Leyton Sent: Tuesday, May 12, 2009 8:56 AM To: [email protected] Subject: RE: Galvanized pipe - threaded reducer tees vs. thread-o-lets What's the client's basis for not allowing "mechanical clamp fittings"? By far the best way to do this would be to cut saddles in the field. By far - no galvanized welding issues, no threading ... way too easy. Steve Leyton Protection Design & Consulting San Diego, CA -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Davis, Adam Sent: Tuesday, May 12, 2009 6:29 AM To: [email protected] Subject: Galvanized pipe - threaded reducer tees vs. thread-o-lets I have a 6" galvanized main and have to come off with 40 2" branch lines. I'm trying to determine the least costly way to transition to the 2" branch lines. The two options I have are using 6"x2" threaded reducer tee or 2" thread-o-let and re-galvanizing the weld. The client requires galvanized pipe and does not want to use mechanical clamp fittings. Any suggestions to which method is the least expensive? Thanks Adam Davis NOTICE - This communication may contain confidential and privileged information that is for the sole use of the intended recipient. 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