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Accessible Ramp — 2010 ADA Standards §405

Number of runs and landings, run length, straight-ramp footprint and the §405 checks: running and cross slope, clear width, rise per run, landings and handrails.

Ramp

Total rise in

Running slope 1 : x

Clear width (between handrails) in

Cross slope 1 : x

Alteration of an existing facility with space limitations (Table 405.2)
Ramp changes direction at landings
Ramp in a play area (12 in maximum rise per run)
Exterior ramp

Results

Runs · rise per run · run length—

Landings · straight-ramp length (runs + landings)—

§405 compliance—

§	Item	Limit	OK

2010 ADA Standards§303.4, §403.3, §405.2–405.8, Table 405.2, §505 — U.S. Department of Justice (public domain). Interpretation per the U.S. Access Board Guide to the ADA Accessibility Standards, Chapter 4. State and local codes (IBC Chapter 11 / ICC A117.1, California CBC 11B) may be more stringent.

VerifiedHand calculations; the Access Board states there is no limit on total ramp length or number of runs — only the 30 in rise per run. A "30 ft maximum run" holds only at 1:12.

Preliminary calculation tool. Final design requires the full text of the referenced standard (see the sources on this page) and review by a licensed PE.