How to interpret the result
- A true zero threshold depends on floor structure, drain slope, waterproofing, and adjacent-floor protection.
- Plan control locations and handheld-shower reach from the actual seated or standing position.
Transparent method
The tool applies this planning structure:
base conversion + size + drain/plumbing + enclosure and support features + contingencyImportant limits
- The tool cannot verify drainage capacity, floor framing, waterproofing details, or local plumbing code.
- Slip resistance and safe transfer layout require product and user-specific review.