2 [§§ 4.7.2; 4.8.2; 4.1.6(3)(a)]

The running slope of the curb ramp is the slope in the direction that people travel when going up or down the ramp run. The arrow in the illustration to the left [below], aligned parallel to the ramp run and perpendicular to the curb, shows where to measure the running slope.

For new construction (when the curb ramp was built after January 26, 1991), the running slope of the ramp run must not exceed 8.33 percent. For alterations (when the curb ramp was altered after January 26, 1991), the slope must not exceed 10 percent for a 6-inch rise or 12.5 percent for a 3-inch rise.