Plumbing double vanity rough-in with a cross fitting is difficult to unclog when there is a blockage below the cross.

Workarounds Described

• installs two wyes off the main branch with a loop offset to avoid cross

Implied Software Gaps

• Design tool that automatically suggests serviceable alternative configurations like dual wyes with offset loops

DrainFlow Pro

A mobile app that guides plumbers in designing drain configurations that are easy to service. It provides code-compliant diagrams, material lists, and alerts for serviceability issues like hard-to-access cleanouts.