The Americans with Disabilities Act (ADA) requires businesses and public improvement projects to provide access and accommodations to citizens with disabilities, with the intent that everyone can benefit from the businesses and services, both public and private. The four main principles are access to goods and services, access to restrooms, accessible approach and entrance, and any other measure necessary to achieve equal access to amenities.
All buildings are required to have ADA accessible entrances. The idea is that people with disabilities should be able to arrive to the site, approach and enter the building as freely as everyone else. Access is required to a public use site from a public street, which may require the use of accessible ramps. On-site ADA parking spaces are required to have the shortest distance from the parking lot to the building entrance.
It’s important to note that cross-slopes for accessible routes allow for a maximum of 2%. Running slopes along the accessible route allows for a maximum of 5% (can match the slope of the adjacent public street as long as that portion of the sidewalk is in the public Right-of-way) before having to provide a handrail.