1. What is the Ramp Length Calculation?

The ramp length calculation determines how long a ramp needs to be to safely connect two different elevations based on the desired slope. It's essential for ADA compliance and safe design.

2. How Does the Calculator Work?

The calculator uses the basic ramp equation:

Where:

• \( \text{Height} \) — Vertical rise (in feet)
• \( \text{Slope} \) — Slope ratio (dimensionless, e.g., 1:12 slope = 1/12 ≈ 0.0833)
• \( \text{Length} \) — Resulting ramp length (in feet)

Explanation: The equation calculates the required ramp length to achieve a specific slope for a given height difference.

3. Importance of Proper Ramp Length

Details: Correct ramp length is crucial for accessibility, safety, and compliance with building codes. ADA recommends a maximum slope of 1:12 (8.33%) for wheelchair ramps.

4. Using the Calculator

Tips: Enter the height difference in feet and the desired slope ratio (e.g., for 1:12 slope, enter 0.0833). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the standard slope for wheelchair ramps?
A: ADA requires a maximum slope of 1:12 (1 inch of rise per 12 inches of run, or about 4.76 degrees).

Q2: How does ramp length affect usability?
A: Longer ramps with gentler slopes are easier to use but require more space. Steeper ramps may be difficult for wheelchair users.

Q3: When are landings required on ramps?
A: ADA requires a landing every 30 feet of horizontal run and at the top and bottom of each ramp segment.

Q4: Are there minimum width requirements?
A: Yes, ADA requires a minimum clear width of 36 inches for ramps.

Q5: How does this differ for other countries?
A: Other countries may have different standards (e.g., UK typically uses 1:15 slope for public buildings).