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 …

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 …

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 …

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 …

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 …

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 …

Apr 12, 2017 · The question of whether to do a NFPA 13 or 13R system always comes up and no one in the office has a very good handle on which system to use. I've always used 13, …

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 …

Dec 5, 2017 · Wow, lots of comments and follow up questions! Thanks. All buildings are commercial - a parking garage, a medical office building, and an apartment building. The MOB …