Uniform Federal Accessibility Standards (UFAS)

4.8.2* SLOPE AND RISE.

The least possible slope shall be used for any ramp. The maximum slope of a ramp in new construction shall be 1:12. The maximum rise for any run shall be 30 in (760 mm) (see Fig. 16). Curb ramps and ramps to be constructed on existing sites or in existing buildings or facilities may have slopes and rises as shown in Table 2 if space limitations prohibit the use of a 1:12 slope or less (see 4.1.6).

Figure 16

Components of a Single Ramp Run and Sample Ramp Dimensions