2016 California Standards for Accessible Design Pocket Guide - Eff. Jan. 1, 2017
11B-304 Turning space.
Turning space shall comply with Section 11B-304.
Exception: Slopes not steeper than 1:48 shall be permitted.
[2010 ADAS] Advisory 304.2 Floor or Ground Surfaces Exception. As used in this section, the phrase "changes in level" refers to surfaces with slopes and to surfaces with abrupt rise exceeding that permitted in 303.3. Such changes in level are prohibited in required clear floor and ground spaces, turning spaces, and in similar spaces where people using wheelchairs and other mobility devices must park their mobility aids such as in wheelchair spaces, or maneuver to use elements such as at doors, fixtures, and telephones. The exception permits slopes not steeper than 1:48.
Turning space shall comply with Section 11B-304.3.1 or 11B-304.3.2.
The turning space shall be a T-shaped space within a 60 inch (1524 mm) square minimum with arms and base 36 inches (914 mm) wide minimum. Each arm of the T shall be clear of obstructions 12 inches (305 mm) minimum in each direction and the base shall be clear of obstructions 24 inches (610 mm) minimum. The space shall be permitted to include knee and toe clearance complying with Section 11B-306 only at the end of either the base or one arm.
Doors shall be permitted to swing into turning spaces.