Guide to the ADA Standards

Ramps

Is there a limit on the total length (number of runs) a ramp may have?

No, the Standards limit the rise of each run (30” max.), but not the overall length of ramps comprised of multiple runs. Since the usability of ramps decreases with length, considerably long ramp systems should be avoided where possible. (Ramps in play areas are limited to a 12” max. rise).

Are curved or circular ramps allowed?

Ramps without level landings at changes in direction typically will not meet the Standards due to resulting compound slopes. This includes most circular or curved ramps, unless the radius is large enough so that the cross slope is compliant and compound slopes are avoided. Otherwise, the curvature and slope result in uneven surfaces that makes wheelchair maneuvering difficult because not all wheels rest evenly on the surface.

Can ramps be portable or provided after construction as an adaptation?

All required ramps and curb ramps must be permanent and installed at the time of construction or alteration with few exceptions. Ramps can be provided after construction only to provide access to raised work stations in courtrooms (sufficient space must be provided in design to facilitate installation). Only ramps serving temporary structures can be temporary or portable.

Is there a maximum distance between ramp handrails?

No, only a minimum (36”) is required between handrails. The Standards do not require center or intermediate handrails on wide ramps.

Can handrails overlap ramp landings?

Along runs and landings, the minimum clear width must be measured between the leading edge of handrails. This also applies to landings required to be at least 60” by 60” where ramps change directions so that the minimum landing area remains clear.

Can handrail extensions wrap or turn?

Extensions are not required for continuous handrails along switchback or dogleg ramps or at aisle ramps serving seating in assembly areas. In alterations where the required extension would project hazardously into circulation paths, they can turn, be shorter, or avoided. Otherwise, handrail extensions must be in same direction as the ramp run.

Can handrails be mounted to guard rails?

Yes, handrails can be installed on guard rails if all applicable requirements are met.