521 CMR, § 21.3
Current through Register 1536, December 6, 2024
The least possible slope should be used for any ramp. The maximum slope shall be one-in-12 (1:12) (8.3%). Where sidewalks are too narrow to install a straight-line curb cut at a slope of one-in-12 (1:12) (8.3%), the sides of the curb cut shall not exceed one-in-12 (1:12) (8.3%). See Fig. 21b. The maximum cross-slope for any curb cut shall be 1:50 (2%). (There is no tolerance allowed on slope requirements). (Refer to 521 CMR 2.4.4d).
521 CMR, § 21.3