Bathroom DWV Plumbing Diagram
This simplified DWV schematic shows how a bathroom's lavatory, shower, and toilet waste branches join a common building drain. A cleanout provides an access point on the branch, and a vent connection is shown from the lavatory side toward the roof. The pipe labels distinguish smaller fixture branches from the larger toilet and building drain. Drain, waste, and vent systems protect trap seals and carry wastewater to the sewer or septic connection, but their exact arrangement must meet local plumbing code. This drawing is useful for discussing system logic during a remodel. It is not a permit-ready layout: actual fitting types, vent distances, slopes, fixture units, and routing need to be designed for the building and jurisdiction.
Open it in the AI editor with a prompt pre-filled — keep what works, change what doesn't.
Scenario
A remodel discussion needs a compact picture of bathroom drain, waste, and vent connections.
Key decisions
- Fixture waste: Separate lavatory, shower, and toilet branches.
- Access: Put a cleanout on the common branch.
- Vent: Show the vent connection and its route toward the roof.
- Outlet: Label the building drain leaving toward the sewer.
When to reuse this
Use this as a conceptual DWV schematic and verify sizes, slope, venting, and fittings against local code.
Frequently asked questions
What does DWV mean?
Why include a cleanout?
Is this a construction drawing?
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