1. What is Ramp Slope?

Ramp slope is the ratio of vertical rise to horizontal run, expressed as a unitless value, percentage, or angle. It's a critical measurement in construction, accessibility design, and engineering to ensure safe and functional inclined surfaces.

2. How to Calculate Ramp Slope

The calculator uses the slope formula:

Where:

• \( m \) — Slope (unitless)
• \( \text{rise} \) — Vertical change (meters)
• \( \text{run} \) — Horizontal change (meters)

Additional Calculations:

• Slope Percentage = \( m \times 100 \)
• Angle = \( \arctan(m) \) (in degrees)

3. Importance of Ramp Slope Calculation

Details: Proper ramp slope is essential for accessibility compliance, safety regulations, and functional design. Different applications have specific slope requirements (e.g., wheelchair ramps typically require 1:12 slope or less).

4. Using the Calculator

Tips: Enter both rise and run values in meters. Ensure measurements are accurate and in the same units. The calculator will provide slope value, percentage, and angle.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum slope for wheelchair ramps?
A: The ADA recommends a maximum slope of 1:12 (8.33%) for wheelchair ramps.

Q2: How do I convert slope to degrees?
A: Use the formula: angle = arctan(slope) × (180/π). Our calculator does this automatically.

Q3: What's the difference between slope ratio and slope percentage?
A: Slope ratio (e.g., 1:12) shows the relationship between rise and run. Slope percentage expresses this as a percentage (e.g., 8.33%).

Q4: Can I use different units for rise and run?
A: No, both measurements must be in the same units for accurate slope calculation.

Q5: What slope is considered steep for vehicle ramps?
A: Generally, slopes greater than 15% are considered steep for vehicles and may require special considerations.