Nov 16, 2010 · The backflow preventer, and the ball valve to isolate the irrigation system do not make for a closed system anymore than the angle stops or faucets on each plumbing fixture.

Oct 23, 2024 · An automatic sprinkler system installed in accordance with Section 903.3.1.3 (NFPA 13-D) shall be permitted in Group R-3 occupancies. That would likely be a less expensive solution.

Sep 3, 2025 · If I install a gravity sewer system that takes all of the effluent both liquids and solids from both residential and commercial locations to a wastewater treatment facility that does Title 22 tertiary …

Sep 24, 2021 · Gray water may not be used in an irrigation system unless the gray water has been treated in accordance with standards set out in the State Plumbing Code. (5) Gray water shall not be …

Oct 28, 2009 · I have a question in regards to a sprinkler system water service line. Can TWO 2-inch lines be used to service ONE 3" interior sprinkler system instead of a single 4-inch water service …

Oct 30, 2009 · There used to be a requirement for a backflow preventer that protects potable water from an irrigation system. The device had to be located a minimum 6” above the highest irrigation head.

Oct 19, 2009 · It should seem reasonable that a stand-alone commercial garage with five or six parking bays will not have a sprinkler system. It should seem reasonable that it will not have a mechanical …

Oct 19, 2009 · If you have a back flow preventor as part of the sprinkler riser stack. Where should the gage be for the city water main pressure coming into the system?? Before the back flow preventor?? …

Aug 6, 2024 · The restaurant owner planned to install a fire sprinkler system in the restaurant itself and use a 2-hour wall to separate it from the neighboring space. Although the building department …

May 16, 2011 · IBC section 903.2.9 requires sprinkler protection throughout the building. This portion of the system would be designed in accordance with NFPA 13 (see IBC 903.3.1.1).I will assumne the …