Ramp landings and handrails: when they are required

Landings and handrails are where most home ramp plans meet their first real design decision. The landings are driven by one number: how far a single run is allowed to rise. The handrails are driven by another: six inches. Get those two numbers into the plan early and the rest of the build is ordinary carpentry.

Landings: the top and bottom of every run

Under the ADA, a landing is required at the top and bottom of every ramp run (§405.7). That single sentence generates most of the layout: a ramp with one run has two landings, a ramp with two runs has three, and so on. A ramp with N runs has N + 1 landings.

Landings are not optional decoration. They are where a wheelchair user stops, rests, opens a door, or turns. That is why the ADA sizes them generously and why a design that skips them fails a code review instantly.

What size a landing has to be

• Length: at least 60 inches (1525 mm) clear (§405.7.3).
• Width: at least as wide as the widest run leading to the landing (§405.7.2), so a 36-inch-wide ramp needs a landing at least 36 inches wide, plus the handrail space.
• Direction changes: where the ramp turns between runs, the landing must be at least 60 × 60 inches (§405.7.4) so a wheelchair can complete the turn.
• Slope and surface: landings follow the same surface rules as the ramp, with slopes no steeper than 1:48 in any direction (§405.7.1), and landings in wet conditions must be built to drain (§405.10).
• Doors: where a door opens onto or beside a landing, the door's maneuvering clearance may extend into the landing area (§405.7.5). In practice that means the landing often ends up noticeably larger than the minimum.

How the rise decides how many landings

The ADA caps the rise of a single run at 30 inches (§405.6). Cross that and the ramp becomes multiple runs with landings between them. Here is the plan the ramp calculator produces at 1:12:

Notice what happens at 36 inches: the ramp does not get steeper, it gets split into two runs of 18 inches, so the plan needs three landings instead of two. Each landing needs at least 60 inches of clear length, and each end landing must be as wide as the run leading to it. Any landing where the ramp turns, for example a switchback that doubles the ramp back on itself, must be at least 60 × 60 inches so a wheelchair can complete the turn.

Handrails: the 6-inch trigger

Handrails are required on any ramp run that rises more than 6 inches (§405.8), and on accessible routes they are required on both sides (§505.2, with a narrow exception for aisle ramps in assembly areas). Since almost any ramp worth building rises more than 6 inches, treat handrails as standard equipment, not an option.

A handrail that satisfies §505 is specific about the details:

• The top of the gripping surface sits 34 to 38 inches above the ramp surface, at a consistent height (§505.4).
• The rail is continuous within the full length of each run (§505.3).
• There is at least 1½ inches of clearance between the handrail and adjacent surfaces, so hands do not scrape walls (§505.5).
• Circular rails are 1¼ to 2 inches in outside diameter, with gripping surfaces that do not rotate in their fittings (§505.7.1).
• Gripping surfaces extend at least 12 inches beyond the top and bottom of each run (§505.10.1), so you can still hold the rail over the transition to the landing.

The residential version: what the IRC asks for

Homes are usually judged against the residential code, not the ADA, and the IRC numbers are friendlier:

• R311.8.2 (landings): landings at the top and bottom of each ramp, where doors open onto ramps, and where ramps change direction: at least 36 inches (914 mm) deep and no narrower than the ramp.
• R311.8.3 (handrails): handrails on at least one side of ramps steeper than 1:12, 34 to 38 inches high, continuous, with a 1½ inch gap to walls.

States adopt the IRC with local amendments, so confirm your edition. Many designers still use the ADA sizes on homes anyway: a 60-inch landing and two-sided handrails cost modestly more and work for every wheelchair and walker that will ever use the ramp, which is a better bet than the minimum.

Plan both into the build

The landings and handrails change the project in material ways: more decking, more posts, more rail length, and a bigger footprint. They also change the quote, which is why the cost estimator asks about handrails and the calculator reports landing count and sizes alongside the slope.

1. Measure the rise (the requirements guide shows how).
2. Run the calculator to get runs, landings and the handrail flag.
3. Check the plan against your local code, or take the spec sheet to your building department (the permit guide covers what they check).

The requirements themselves are not complicated once they are laid out. Every number in this guide is summarized, with its section references, in the ADA ramp requirements guide.

Sources

• 2010 ADA Standards for Accessible Design, §405 Ramps (U.S. Department of Justice, ada.gov) the landings requirements (§405.7) and the handrail trigger (§405.8) used in this guide; re-checked October 17, 2026.
• 2010 ADA Standards for Accessible Design, §505 Handrails (ada.gov) handrail height, continuity, clearance, profile and the 12-inch extensions (§505.4, §505.3, §505.5, §505.7, §505.10); re-checked October 17, 2026.
• International Code Council: codes.iccsafe.org the ICC base for the IRC R311.8.2 and R311.8.3 residential values quoted here; codes are adopted with local amendments; re-checked October 17, 2026.
• AccessProof: ADA ramp requirements guide, landings and handrails sections the on-site summaries this guide reuses, including the IRC comparison and the wet-conditions note.
• AccessProof: ADA ramp calculator returns the run split, landing count and handrail requirement for your measured rise.

All links checked October 17, 2026. This is general information, not legal or design advice. Codes are adopted locally with amendments, so confirm the values used in your project with your local code authority.