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

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 ...

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.