Walks and sidewalks subject to this chapter shall have a continuous common surface, not interrupted by steps or by abrupt changes in level exceeding 1/2 inch (12.7 mm). (See Section 1111A).
Walking surfaces shall be stable, firm, and slip resistant, and shall comply with Section 1110A.3.
Walks and sidewalks shall be a minimum of 48 inches (1219 mm) in width, except that walks serving an individual dwelling unit in covered multifamily buildings may be reduced to 36 inches (914 mm) in clear width except at doors.
Surface cross slopes shall not exceed 1 unit vertical in 48 units horizontal (2.083-percent slope).