1. What is an ADA Ramp Slope Calculator?

Definition: This calculator determines the slope of a ramp based on its rise and run measurements, and checks compliance with ADA standards.

Purpose: It helps architects, builders, and property owners ensure their ramps meet accessibility requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Slope — Ratio of vertical to horizontal distance (unitless)
• Rise — Vertical height change (inches)
• Run — Horizontal length (inches)

ADA Standard: The maximum allowable slope is 1:12 (1 inch of rise per 12 inches of run).

3. Importance of Proper Ramp Slope

Details: Correct slope ensures accessibility for wheelchair users and compliance with the Americans with Disabilities Act (ADA) guidelines.

4. Using the Calculator

Tips: Enter the rise and run in inches. The calculator will determine the slope and verify if it meets ADA requirements.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum ADA ramp slope?
A: The maximum slope is 1:12 (8.33% grade) for commercial ramps.

Q2: Can I have a steeper slope for residential ramps?
A: Residential ramps may go up to 2:12 (16.67% grade) but 1:12 is recommended.

Q3: How do I measure rise and run?
A: Rise is the vertical height change from start to finish. Run is the horizontal projection length.

Q4: What if my slope exceeds 1:12?
A: You must either reduce the rise or increase the run to meet ADA standards.

Q5: Are there other ADA ramp requirements?
A: Yes, including minimum width (36"), landing requirements, and handrail specifications.