What is the maximum grade percentage allowed for a sidewalk?

The maximum grade percentage allowed for a sidewalk is typically set to ensure safety and accessibility for pedestrians. A grade percentage of 8.33% corresponds to a slope of 1:12, which is a standard guideline in many building codes and accessibility standards, such as those outlined by the Americans with Disabilities Act (ADA). This slope is considered to be a manageable incline for individuals, including those with mobility challenges, as it balances accessibility with functionality.

In contrast, steeper grades increase the risk of slips and falls, making it vital to adhere to the recommended maximum percentage to maintain safety and compliance with regulatory standards. Other choices do not align with the established guidelines, which prioritize pedestrian safety and accessibility requirements.