IPC · 2024 International Plumbing Code

§301.2 · Maintainability

Effective in IPC 2024.

Plain-English explainer

301.2 says plumbing systems are designed and installed so they can be inspected, repaired, and replaced without removing permanent portions of the building. The drafter cites it when a rough-in buries a cleanout, a trap, or a shutoff behind a finished surface.

Why inspectors flag this

A cleanout behind tile, a shutoff behind drywall, or a backflow device sealed in a wall is the canonical 301.2 violation; the drafter surfaces the rule so the layout adds an access point before the rough-in walk-through.

As quoted in the code: Plumbing systems are designed and installed so that access, inspection, repair, and replacement can be carried out without removing permanent portions of the building.

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