Any ramp system that is intended for public use must comply with the americans with disabilities act ada.
Ada ramps at doors.
Ada ramp ada compliance 4.
This guide explains scoping and technical requirements for accessible entrances doors and gates in the ada standards.
As defined by the ada a ramp is a sloping route constructed with a slope greater than 1 20 one inch of vertical rise for every 20 inches of horizontal length or run and must conform to the standard ada specifications for ramps.
Landing extends 18 minimum beyond the edge of door and 60 minimum out from door.
Earth is graded up to landing and ramp to eliminate drop off.
Ada ramp specifications.
New landing and ramp eliminates step at entrance.
1 12 and width is 36 minimum another approach to providing access at an entrance is to use a platform or folding lift.
4 8 1 general any part of an accessible route with a slope greater than 1 20 shall be considered a ramp and shall comply with 4 8.