Stunning Horizontal Plumbing Vent

The local inspector here in Long Island requires a 2 vent on the toilet.

Horizontal plumbing vent. Distance to plumbing vent. That might lead to a plugged vent in the dead of winter and pressure balance problems in your drains as a result. The thing is I know a horizontal line is not okay below the trap weir or something like this.

Above the fixture flood rim before running horizontally. In a vertical pipe run chances are that most of the condensate will run back down the vent but in a horizontal pipe run outdoors theres much more risk of the condensate pooling and freezing. Nearest window door opening air intake or ventilation shaft.

Drain piping UPC 7080 and vent pipe UPC 9051 not to grade Drain piping can be horizontal 14 per foot vertical or 450- vent piping shall be free of sags and be graded and connected to drip back by gravity to drain pipe it serves. I already reduced the 4 to 3 about 6from the toilet. Useful Plumbing Vent Diagrams.

If the vent must be taken off a horizonal pipe it is done with a wye rolled to a 45º and the vent pipe must rise at least at 45º until it is above the flood rim of fixtures. As expected call out the 90-degree fitting since it is impossible to lay a typical 90 on a waste line horizontally. A vent must rise above a fixtures flood rim before turning horizontally.

If necessary a pair of 45- degree offsets may be used as shown in the figure below. The vent piping in this drawing is considered to. 12-inches from nearest vertical surface.

This may prevent you from having bends in your plumbing vent since the lower horizontal connection will slope toward the stack. Toilet Vent Option 2. A plumbing tee is a drain pipe connection that joins a horizontal well sloped 14 per foot but roughly horizontal drain or vent pipe to the vertical vent or wet vent drain pipe.