1. What is a Ramp Slope Calculator?

Definition: This calculator determines the slope percentage of a ramp based on its height and length measurements.

Purpose: It helps architects, builders, and accessibility planners ensure ramps meet required slope standards.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( S \) — Slope percentage (%)
• \( H \) — Height (vertical rise) in feet
• \( L \) — Length (horizontal run) in feet

Explanation: The height is divided by the length to get the slope ratio, then multiplied by 100 to convert to percentage.

3. Importance of Ramp Slope Calculation

Details: Proper slope calculation ensures ramps are safe, accessible, and compliant with regulations (typically 1:12 slope or 8.33% for ADA compliance).

4. Using the Calculator

Tips: Enter the vertical height and horizontal length in feet. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the maximum slope for an ADA compliant ramp?
A: The maximum slope for ADA compliance is 1:12 (8.33%). For existing structures, 1:10 (10%) may be allowed.

Q2: How do I measure height and length?
A: Height is vertical rise from ground to top of ramp. Length is horizontal distance covered by the ramp.

Q3: What if my slope exceeds recommended values?
A: Consider increasing ramp length or adding switchbacks/landings to reduce the slope.

Q4: Does this calculation account for ramp surface?
A: No, this calculates geometric slope only. Surface friction and material should be considered separately.

Q5: How does slope percentage relate to degrees?
A: Slope percentage is not the same as degrees. 100% slope equals 45 degrees (arctangent of 1).