here's the text that mad win into the First Draft New section 6.4.8. Extension fittings. 6.4.8.1: the outlet diameter of the extension fittings shall be equal to the inlet diameter of the sprinkler. 6.4.8.2: a single extension fitting up to a maximum of 2 inches in length shall be permitted to be installed with a sprinkler. 6.4.8.2.1: the extension fitting shall be included in the hydraulic calculations. 6.4.8.2.2: the requirement of 6.4.8.2.1 shall not apply where the sprinkler is listed for use with the extension nipple.
Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org On Jan 20, 2014, at 1:39 PM, Roland Huggins <[email protected]> wrote: > You hit it on the nose when indicating that the 1" restriction is on PIPE. > Does this limit apply to fittings? Well the real question since we know 1/2" > outlets are ok is not the standard fitting but nipple extensions. That's an > issue that the standard has not yet addressed. There have been cases where 2 > or 3 extensions have been combined (and probably not included in the > calculations). I believe something on it will be in the next addition. > > Roland > > > Roland Huggins, PE - VP Engineering > American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives > Dallas, TX > http://www.firesprinkler.org > > > > > > On Jan 17, 2014, at 3:19 PM, Forest Wilson Fire Sprinkler Contractor > <[email protected]> wrote: > >> I dont underatand how a fitting would be considered a pipe nipple. >> The prohibition against using 1/2" pipe in earthquake zones should not apply >> to the use of street l fittings. >> >> If it did, then the same argument could could made against using any 1/2" >> fitting. >> >> >> Forest Wilson > > _______________________________________________ > 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
