1. What is an ADA Compliant Ramp Calculator?

Definition: This calculator determines the minimum required length for an ADA compliant ramp based on the height that needs to be overcome.

Purpose: It helps architects, builders, and property owners design wheelchair-accessible ramps that meet ADA standards.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( L \) — Required ramp length (feet)
• \( H \) — Height to overcome (feet)

Explanation: ADA standards require a 1:12 slope ratio, meaning for every 1 inch of vertical rise, you need 12 inches (1 foot) of ramp run.

3. Importance of ADA Ramp Compliance

Details: Proper ramp length ensures accessibility for wheelchair users and compliance with the Americans with Disabilities Act standards.

4. Using the Calculator

Tips: Simply enter the height that needs to be overcome in feet. The calculator will determine the minimum required ramp length.

5. Frequently Asked Questions (FAQ)

Q1: What if my height is in inches?
A: Convert inches to feet by dividing by 12 before entering the value (e.g., 6 inches = 0.5 ft).

Q2: Are there exceptions to the 1:12 rule?
A: For existing sites with space limitations, 1:10 or 1:8 slopes may be allowed for short rises (max 3-6 inches).

Q3: What about landings?
A: This calculator provides run length only. ADA requires a 5'x5' landing for every 30 feet of run and at top/bottom.

Q4: What's the maximum rise for a single ramp?
A: ADA limits single ramp runs to 30 inches of rise (30 feet of run).

Q5: Does this include handrail requirements?
A: No, this calculates length only. ADA requires handrails on both sides for ramps with >6" rise or >72" length.