Building Code Administrators and Inspectors Florida Principle and Practice Licensure Practice Exam

From what running slope ratio is a ramp defined?

1. 1:30

2. 1:20

3. 1:15

4. 1:40

The correct answer is: 1:20

A ramp is defined by the running slope ratio as a means to ensure accessibility and safety for individuals using it, particularly for those with disabilities. The defining ratio of 1:20 indicates that for every 20 units of horizontal run, the ramp can rise by 1 unit in height. This specific gradient provides a balance between navigability and safety, preventing the ramp from being too steep and difficult to traverse. Using a slope ratio of 1:20 is consistent with the requirements set forth in accessibility standards such as the Americans with Disabilities Act (ADA) guidelines. These guidelines are crucial for ensuring that built environments are accessible to people with mobility impairments. By defining ramps with this slope ratio, it helps avoid potential hazards like falling and makes maneuvering easier for wheelchair users or individuals with other mobility aids. In contrast, other slope ratios either indicate a more severe incline or are not recommended for general public accessibility, making them inappropriate for the design of ramps meant for widespread use. This is why the 1:20 ratio is the accepted standard.