you can have multiple design basis covering different portions of a building. They could present different K-factors or types of sprinklers. There are explicit requirements that address the interface between them.
What do you mean the AHJ has dropped the pressure? Does that mean the water purveyor has dropped the pressure to the area or that the AHJ has imposed a greater reduction on the actual supply as a safety factor. In other words, is the existing system still providing adequate protection (not an issue for imposed reductions) ? Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org <http://www.firesprinkler.org/> > On Mar 19, 2015, at 9:40 AM, James Crawford <[email protected]> wrote: > > We are doing an addition to an existing warehouse, the existing warehouse is > protected with ESFR K14 uprights, since the building was constructed the AHJ > has dropped the water pressures in the area by 10 psi. > > > > Due to the pressure drop I cannot use the K14 heads for the addition, can > you mix ESFR sprinkler heads in the same warehouse area, I would need K17 > heads for the addition, The addition would be open to the existing warehouse > space. Or do I need to change all the heads in the existing warehouse to > match? > > > > > > Thank you > > > > > > James Crawford > > Phaser Fire Protection Ltd. > > Phone 604-888-0318 > > Fax 604-888-4732 > > Cel 604-790-0938 > > Email [email protected] > > > > _______________________________________________ > 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
