Bathroom Plumbing Drawing Tool

A standard bathroom plumbing drawing shows fixture locations (toilet, lavatory sink, shower/tub), cold and hot water supply runs (typically 1/2" to 3/4" PEX or copper), drain-waste lines (3" toilet soil line, 2" shower drain, 1-1/2" sink drain), and the 1-1/2" to 2" vent stack.

Yes. Use the Mode selector in the toolbar to switch to 'Isometric Riser' view, which renders your bathroom piping at a 30-degree isometric angle for plumbing permit submissions.

Under the International Plumbing Code (IPC Table 909.1), the maximum distance from a 1-1/4" trap to its vent is 5.0 feet; for a 1-1/2" trap arm, the maximum distance is 6.0 feet at standard 1/4 in/ft slope.

Plumbing codes require a minimum 2-inch drain pipe and P-trap for shower stalls to prevent water backup during peak flow. Bathtubs with overflow drains can use 1-1/2" drains.

Yes. Under IPC §912 (Horizontal Wet Venting), fixtures within a single bathroom group (lavatory, water closet, shower/tub) can be vented through a single properly sized 2" lavatory wet vent pipe.

Schedule 40 PVC or ABS is the standard choice for DWV drainage and venting, while PEX-A or Type L copper is preferred for hot and cold domestic potable water distribution.