Concrete Ramps – ADA requirement

Concrete sidewalks need ramps.  It’s a known fact.  But how are they built?  What are the specifics to construct a proper curb ramp?  For guidance, it’s best to consult the Americans with Disabilities Act which contains design criteria for public rights-of-way and commercial facilities. 

The concrete ramps ADA requirement specifies a minimum running slope of 1:48 and a maximum running slope of 1:12.  Ramps should be built with a maximum slope of 1:48, a 48”x48” minimum level landing at the top and side flares with slopes of 1:10. 

There is also a concrete ramps ADA requirement for truncated dome detectable warnings and since the ramp is concrete, there is a tendency towards using a rubber stamp to create an impression of the domes in the cement.  Note, however, the difficulty of achieving compliant dome dimensions. As the stamp is lifted away from the concrete, air forces downward on top of the domes and may flatten the profile reducing the dome height to lower than the required 0.2”. 

To minimize the risk of rejected work, consider Armor-Tile as an alternative.  Every dome is manufactured to precise dimensions guaranteeing 100% ADA compliance on the first try.  The labor required to install Armor-Tile is negligible.  A five minute application ensures that construction stays on schedule and the maximum number or ramps is built each day.

For more information please visit www.armor-tile.com.

By:
Aaron McConachie
Engineered Plastics, Inc.
300 International Drive Suite 100
Williamsville, NY 14221

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