To create a bathroom plumbing plan, draw all fixtures to scale and ensure that they are not too close together. Mark the drain and vent lines for the institutions before adding the supply lines. Create riser drawings that include vertical pipe runs as well. A bathroom plumbing plan depicts the system that will bring water in and remove waste. Water supply lines drain, vent pipes, valves, and fixtures such as toilets and sinks are common components. These plans frequently use a variety of official plumbing symbols to denote different elements, and producing plan views, and riser drawings by hand or on a computer is fairly simple.