1. What is a Ramp Calculator?

Definition: This calculator determines the required length of a ramp based on the height to be overcome and the desired slope.

Purpose: It helps architects, builders, and accessibility planners design ramps that meet safety standards and usability requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( L \) — Ramp length (feet)
• \( H \) — Height to overcome (feet)
• \( S \) — Slope ratio (unitless, e.g., 0.0833 for 1:12 slope)

Explanation: The height is divided by the slope ratio to determine the necessary ramp length for a safe and comfortable incline.

3. Importance of Proper Ramp Calculation

Details: Correct ramp length ensures ADA compliance, wheelchair accessibility, and safe use for all individuals. Proper slopes prevent accidents and make ramps usable.

4. Using the Calculator

Tips: Enter the height in feet and the desired slope ratio (default 0.0833 for 1:12 slope). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a standard slope for accessibility ramps?
A: ADA recommends 1:12 slope (8.33% or 0.0833 ratio) for wheelchair ramps.

Q2: How do I convert slope percentage to ratio?
A: Divide percentage by 100 (e.g., 8% slope = 0.08 ratio).

Q3: When would I use a different slope?
A: Steeper slopes (up to 1:8) may be used for limited spaces, but check local regulations.

Q4: Does this include landing space?
A: No, add extra length for required landings at top, bottom, and intervals.

Q5: How do I calculate for metric units?
A: Convert height to meters first, then the result will be in meters.