Wheelchair Ramp Calculator

The 2010 ADA Standards §405.2 base rule uses a maximum running slope of 1:12 rise to horizontal run. Multiply rise in inches by 12 for minimum run in inches; the run in feet equals rise in inches. This calculation excludes landings and door maneuvering space. US DOJ 2010 ADA Standards for Accessible Design.

The 2010 ADA Standards specify 36 inches minimum clear width (§405.5), 30 inches maximum rise per run (§405.6), a 60-inch minimum landing length with width at least the widest connecting run (§§405.7.2–3), and 60 × 60 inches at direction changes (§405.7.4). Handrails are required for more than 6 inches rise (§405.8). US DOJ 2010 ADA Standards for Accessible Design.

This is a planning guide, not a code inspection. Ordinary private single-family homes are not automatically subject to ADA provisions. Check the local building department and applicable local/program requirements; site layout can require multiple runs and landings. US DOJ 2010 ADA Standards for Accessible Design.

No. HUD’s June 2024 report lists 2018 Western New York installed estimates for complete documented ramp scopes. Its 20 ft wooden ramp averages cannot become per-foot rates. Missing endpoints and typical cells require a local quote. The exhibit remains provisional until the original PDF is verified. HUD — Retrofits & Adaptations: Improving Mobility in the Home.