2022 California Standards for Accessible Design Guide (effective January 1, 2023)
11B-405.2 Slope.
Ramp runs shall have a running slope not steeper than 1:12.
Exception: Reserved.
[2010 ADA Standards] EXCEPTION: In existing sites, buildings, and facilities, ramps shall be permitted to have running slopes steeper than 1:12 complying with Table 405.2 where such slopes are necessary due to space limitations.
Table 405.2 Maximum Ramp Slope and Rise for Existing Sites, Buildings, and Facilities
Slope1 |
Maximum Rise |
---|---|
Steeper than 1:10 but |
3 inches (75 mm) |
Steeper than 1:12 but |
6 inches (150 mm) |
1. A slope steeper than 1:8 is prohibited.
Advisory 11B-405.2 Slope. To accommodate the widest range of users, provide ramps with the least possible running slope and, wherever possible, accompany ramps with stairs for use by those individuals for whom distance presents a greater barrier than steps, e.g., people with heart disease or limited stamina. ◼
ETA Editor's Note
Lacking the Exception at 11B-405.2, CBC is more stringent at existing ramps than 2010 ADA Standards.
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