Free access to over 1,200 shapes and blocks included with the ArcSite CAD app
Key Features
This laundry plumbing rough in diagram includes:
- Clothes washer and drain hose
- Indirect connection at the top of the standpipe
- Standpipe 18" to 42" above the trap
- P-trap at the standpipe base
- Trap 6" to 8" above the floor
- Sanitary tee into the waste stack
- Waste stack through the floor
The indirect connection keeps the drain hose loose in the standpipe instead of sealed to it, which breaks the siphon so drain water doesn't get pulled back toward the washer.
Key Considerations When Installing a Laundry Drain
The standpipe needs enough height above the trap to absorb the washer's pump surge without overflowing, and codes commonly set that at 18" to 42". ArcSite lets you set those heights on your customer's laundry wall and hand the rough in to your crew with the numbers on it.
FAQ
No. It covers the drain side only. Add the hot and cold supply valves in ArcSite to show the full laundry rough in.
Yes! You can adjust the standpipe and trap heights in ArcSite to match your local code and the washer you're installing.
Yes! ArcSite offers a free trial, so you can draw your next rough in and see how it fits the way your shop works.











