Diagram/Tim CarterThis rough-in plumbing diagram shows exactly what the drain and vent pipes will look like once installed. Q. My city allows homeowners to install their own plumbing. But to get ...

Learn why venting is important in a plumbing remodel and how to choose the best plumbing vent diagram for your space.

The diagram will have to include bathroom plumbing vents. Vent pipes on plumbing diagrams are drawn as dashed lines, while pipes that carry water are drawn as solid lines.

The plumbing in a typical home is called a drain-waste-vent system, connecting all your fixtures to a common sewer pipe that funnels wastewater into municipal systems or septic tanks. This setup ...