Ramp Slopes

Multiple elevation drawings comparing ramp slopes based on incline and run lengths

A ramp is comprised of horizontal sloped runs connected by level landings between runs. Any slope greater than 1:20 and less than 1:12 along an accessible route shall be considered a ramp that is required to comply with ADA accessibility codes and compliances. The least possible slope should be used whenever possible.

The maximum allowable slope in any new construction is 1:12 with a maximum rise of 30” (76.2 cm) without a landing. A ramp with a slope between 1:12 and 1:16 can have a maximum horizontal length of 30’ (9.14 m) without a landing. A ramp with a slope between 1:16 and 1:20 can have a horizontal run up to 40’ (12.19 m) before requiring a landing.

What is the maximum allowable slope for an ADA accessible ramp?
The maximum allowable slope in any new construction is 1:12 with a maximum rise of 30” | 76.2 cm and a maximum horizontal run without a landing of 30’ | 9.14 m.
How far can a ramp go without a landing?
A ramp with a slope between 1:12 and 1:16 can have a maximum horizontal length of 30’ | 9.14 m without a landing. A ramp with a slope between 1:16 and 1:20 can have a horizontal run up to 40’ | 12.19 m before requiring a landing.
What is the minimum slope of a ramp?
Any slope greater than 1:20 and less than 1:12 along an accessible route shall be considered a ramp that is required to comply with ADA accessibility compliances.

Details

*Under Development*

Height: 
Width:
Depth:
Length:
:
:
Weight:

Maximum Slope: 1:12
Minimum Slope: >1:20
Maximum Rise: 30” | 76.2 cm
Maximum Horizontal Run (1:12-1:16): 30’ | 9.14 m
Maximum Horizontal Run (1:16-1:20): 40’ | 12.19 m

:
:
:

Properties

Drawings include:
Ramp Slopes side elevation (detail), side (runs)

Related Collections

Downloads

2D Downloads

Right Click and 'Save As' to Download
Ad Blocker
Enjoy free drawings? We do too! 
Advertising helps fund our work.
Please support the project by disabling
or whitelisting your ad blocker while browsing Dimensions.Guide. Thanks!

Ramps are inclined surfaces that join different levels of a space. Commonly used at the entrances of buildings to accommodate level changes, ramps provide building access to wheelchair users. The maximum slope of a ramp is calculated to provide comfortable and easy access to the building.