A homeowner or DIYer is struggling to design a code-compliant toilet drain vent layout under limited subfloor space (15 inches) and cannot find clear, practical guidance on fitting the vent and drain fittings.

Workarounds Described

• searches online diagrams and forum posts for layout ideas
• tries to lego fittings together manually by looking at pictures
• measures subfloor space and tries to fit standard fittings into limited height

Implied Software Gaps

• Interactive layout tool that customizes DWV diagrams to a user's specific space constraints
• Code-checking algorithm that validates vent and drain configurations for tight spaces

VentSpace Pro

An interactive plumbing layout assistant that lets you input your room dimensions (e.g., subfloor height) and fixture locations, then generates a code-compliant drain-waste-vent (DWV) diagram. It shows multiple layout options with clear annotations on why each works or fails, saving hours of research and guesswork.