I believe you are not understanding my explanation, maybe because my explanation was poorly done - try this:
Lets say you have a backflow in a pit or heated enclosure directly after the property line with an FDC on the discharge side of the backflow (system side) and then underground piping to the building feeding a system riser. The fire marshal says you cannot do this because you will be pressurizing the underground supply; you have to come off the interior piping and pipe back out to the free standing FDC; which in turn may be or may not be required to be right next to your pit. On Thu, Jul 11, 2013 at 4:19 PM, Smith, Steven D. (CSFD) < [email protected]> wrote: > And sometimes "government employees" have to educate less than > knowledgably contractors. ;) > > Steve > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Forest Wilson > Sent: Thursday, July 11, 2013 3:02 PM > To: [email protected] > Subject: Re: FDC Arrangement > > What is there to document? > He doesn't understand the Standard; > A fine example of a government employee telling a knowledgeable contractor > what to do. > > Sent from my iPhone > > On Jul 11, 2013, at 4:56 PM, Bobby Gillett <[email protected]> > wrote: > > > We have a project that requires a Free Standing FDC. Typically we > > would use the scenario of putting the backflow preventer above ground > > and mounting the FDC on the dishcarge side of the backflow before > > going back underground to supply the system in the building. The > > local fire marshall is wanting the FDC to come off the interior system > > and pipe underground back out to the FDC; he is quoting the > > explanation after 912.1 of the 2012 > > IFC: "These connections give the fire department the capability of > > supplying the necessary water to the automatic sprinkler system at a > > sufficient pressure *without pressurizing the underground supply*." > > I believe this is being misinterpreted - my interpretation is that > > this is referencing *not pressurizing the underground supply* on the > > supply side of the backflow (or a check valve depending on the > > scenario) - not the underground to the system on the discharge side of > the backflow. > > > > Has anyone dealt with this scenario yet and is their documentation out > > there straightening this out? > > > > Thank you, > > > > Bobby Gillett > > Living Water Fire Protection, LLC > > (850) 937-1850 > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > > er.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
