I recall a thread here where someone was using MJ restraint but the piping ran down a steep hillside and the AHJ wanted a thrust block at the bottom. This ought to have been called a foundation or something like that as the purpose was not thrust restraint but to counter the possibility of a joint not required to be restrained against thrust from separating as gravity pulled down on the piping. Whether a well founded argument or not the logic of the base of this steep angled main settling against disturbed soil in the bottom of the trench has merit.
On Thu, Jul 16, 2015 at 11:31 AM, Pete Schwab <[email protected]> wrote: > 10.8.1.1 indicates an OR so either method is acceptable > > > 10.8 Joint Restraint. > 10.8.1 General. > 10.8.1.1* All tees, plugs, caps, bends, reducers, valves, and hydrant > branches shall be restrained against movement by using > thrust blocks in accordance with 10.8.2 or restrained joint systems > in accordance with 10.8.3. > > > > Peter Schwab > VP of Purchasing and Engineering technologies > > Wayne Automatic Fire Sprinklers Inc. > 222 Capitol Court > Ocoee, Fl 34761 > > Mobile: (407) 468-8248 > Direct: (407) 877-5570 > Fax: (407) 656-8026 > > www.waynefire.com > > > > We’re hiring great people at all of our locations! Please check out our > website for the details! > > > > -----Original Message----- > From: Sprinklerforum [mailto: > [email protected]] On Behalf Of Steve Leyton > Sent: Thursday, July 16, 2015 2:30 PM > To: [email protected] > Subject: RE: Thrust block vs Restrainers - Underground > > It is required to furnish thrust restraint at mechanical joints. > Mechanical restraints and thrust blocks are both widely accepted forms of > restraint, so either one is acceptable. It is not required to furnish > both, but I've seen many applications where both methods were used together > for one reason or another. > > Steve Leyton > Protection Design & Consulting > > > > > > -----Original Message----- > From: Sprinklerforum [mailto: > [email protected]] On Behalf Of Gerzayn > Fuentes @ CEPI.MX > Sent: Thursday, July 16, 2015 10:47 AM > To: [email protected] > Subject: Thrust block vs Restrainers - Underground > > Hello, folks! > > I am working with underground pipe PVC DR14 C900 for a fire sprinkler > system and I do understand that if we use restrainers (for example: > SIGMA PV-LOK-PVM and PVP) in/near the MJ fittings, we do not need to use > thrust blocks. ¿Is this true? > > I would appreciate if someone could share an Excel file to calculate the > thrust block size. > > Thanks > > Best regards! > _______________________ > Gerzayn Fuentes > CEPI - Mexico > T. + 52 (81) 1766-0800 > _______________________________________________ > 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 > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) A problem well stated is a problem half solved. -Charles F. Kettering, inventor and engineer (1876-1958) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
