1. What is Slope Gradient?

Slope gradient represents the steepness or incline of a surface, commonly used for UK roads and ramps. It's expressed as a percentage that indicates how much a surface rises vertically for a given horizontal distance.

2. How Does the Calculator Work?

The calculator uses the gradient formula:

Where:

• \( Rise \) — Vertical height difference (meters)
• \( Run \) — Horizontal distance (meters)
• \( Gradient \) — Slope percentage result

Explanation: The formula calculates the ratio of vertical rise to horizontal run, then multiplies by 100 to convert to percentage.

3. Importance of Gradient Calculation

Details: Accurate gradient calculation is essential for road design, construction projects, accessibility compliance, and determining vehicle capabilities on inclines.

4. Using the Calculator

Tips: Enter rise and run values in meters. Both values must be positive numbers greater than zero. The calculator will provide the gradient percentage.

5. Frequently Asked Questions (FAQ)

Q1: What is considered a steep gradient for UK roads?
A: In the UK, gradients above 10% are considered steep, with maximum gradients typically limited to 25% for public roads.

Q2: How does gradient affect vehicle performance?
A: Steeper gradients require more engine power, reduce fuel efficiency, and may affect braking distance and vehicle stability.

Q3: What gradient is suitable for wheelchair access?
A: For wheelchair accessibility, gradients should not exceed 5% for ramps, with 8.33% (1:12) being the maximum allowed under UK building regulations.

Q4: Can I use different units for rise and run?
A: Yes, as long as both rise and run use the same units (meters, feet, etc.), the gradient percentage calculation remains accurate.

Q5: How is gradient different from angle?
A: Gradient is expressed as a percentage, while angle is measured in degrees. A 45° angle equals 100% gradient, and a 30° angle equals approximately 57.7% gradient.