ADA Best Practices Tool Kit for State and Local Governments

4 [§ 4.7.2]

The gutter is the part of the street that borders the curb. To measure the gutter slope, place the level in the same position as the arrow in the illustration, with one end where the gutter meets the ramp and the other end towards the street. The gutter slope is parallel to the ramp and perpendicular to the curb. The gutter may slope up to 5 percent towards the curb ramp, but not more.