Hi The back flow preventer is used only when you use municipality water tapping for fire fighting system to your facility,instead of having separate fire pumpset & fire water tank. regards
Regards D RADHAKRISHNAN MANAGER - Engineering & Estimation SAMAY MIDDLE EAST TRADING LLC PO BOX: 128089, Al Quoz Industrial Area-2,Dubai,UAE Tel: 00971 4 3381 200(2 Lines), Fax: 00971 4 3381 300 Mobile: 050-1643785, email : [email protected], [email protected], [email protected],Web site: www.samayprojects.in On Thu, Apr 3, 2014 at 7:19 PM, Cesar Lira <[email protected]> wrote: > Hi, everybody. > > Where can I use or where INEED to use a back flow preventer there is any > rule for that???.. > > Regards.. > > > > -----Mensaje original----- > De: [email protected] > [mailto:[email protected]] En nombre de Todd > - > Work > Enviado el: jueves, 03 de abril de 2014 02:31 a.m. > Para: [email protected] > Asunto: Re: Steeply pitched roof > > I ran into this situation with a sanctuary in a historic church several > years back. The geometry was such that not all of the requirements of NFPA > 13 could be met. We handled this similar to what has been described here. > > Todd G Williams, PE > Fire Protection Design/Consulting > Stonington, CT > www.fpdc.com > 860-535-2080 (ofc) > > > On Apr 3, 2014, at 5:19 AM, "Dan Arbel" <[email protected]> wrote: > > > > Ronald, > > > > This is a very old provision. > > > > The sprinkler spray is clearly disturbed. > > > > Do you know if this provision is based on any test? > > > > Dan > > > > > > www.riskmanage.com > > Tel: 972-4-8243337, 972-777-504-011 > > Fax: 972-4-8243278, > > [email protected] > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of > > Roland Huggins > > Sent: Wednesday, April 02, 2014 11:26 PM > > To: [email protected] > > Subject: Re: Steeply pitched roof > > > > I would not focus on the phrase shall be permitted (which taken by > > itself means optional). I would focus on the portion that states to > > maintain a horizontal distance of 24 inches. Combine this with Figure > > 8.6.4.1.3.3 that dictates the 4 ft separation is a minimum leads to > > the interpretation that you must be 2 ft away on each side and you are > allowed to exceed the 36" > > vertical maximum to accomplish it. > > > > Roland > > > > > > Roland Huggins, PE - VP Engineering > > American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives > > Dallas, TX > > http://www.firesprinkler.org > > > > > > > > > > > >> On Apr 2, 2014, at 11:17 AM, Juan Munguia <[email protected]> > wrote: > >> > >> My opinion is section 8.6.4.1.3.3 requires a minimum horizontal > >> clearance of 24 inches, and therefore allows the deflector to be > >> located at a vertical distance greater than 36 inches down from the > peak. > >> > >> Juan Munguia > > > > _______________________________________________ > > 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-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
