2016 California Standards for Accessible Design Pocket Guide - Eff. Jan. 1, 2017
11B-402 Accessible routes.
Accessible routes shall comply with Section 11B-402.
Accessible routes shall consist of one or more of the following components: walking surfaces with a running slope not steeper than 1:20, doorways, ramps, curb ramps excluding the flared sides, elevators, and platform lifts. All components of an accessible route shall comply with the applicable requirements of Division 4.
[2010 ADAS] Advisory 402.2 Components. Walking surfaces must have running slopes not steeper than 1:20, see 403.3. Other components of accessible routes, such as ramps (405) and curb ramps (406), are permitted to be more steeply sloped.