1. What is Slope Percentage?

Slope percentage is a measure of the steepness or incline of a surface, expressed as a percentage. It represents the ratio of vertical change (rise) to horizontal change (run) multiplied by 100.

2. How Does the Calculator Work?

The calculator uses the slope percentage formula:

Where:

• Rise — Vertical change or height difference
• Run — Horizontal distance or length

Explanation: The formula calculates the incline as a percentage by dividing the vertical change by the horizontal distance and multiplying by 100.

3. Importance of Slope Calculation

Details: Slope percentage is crucial in various fields including construction, civil engineering, landscaping, road design, and accessibility planning. It helps determine proper drainage, wheelchair accessibility, and structural stability.

4. Using the Calculator

Tips: Enter both rise and run values in the same units (feet, meters, etc.). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between slope percentage and slope ratio?
A: Slope percentage expresses the incline as a percentage (e.g., 10%), while slope ratio expresses it as a ratio (e.g., 1:10).

Q2: What is considered a steep slope?
A: Generally, slopes above 15% are considered steep, while slopes above 25% are very steep and may require special engineering considerations.

Q3: How is slope percentage used in accessibility?
A: The Americans with Disabilities Act (ADA) recommends a maximum slope of 8.33% (1:12 ratio) for wheelchair ramps.

Q4: Can slope percentage exceed 100%?
A: Yes, a slope percentage can exceed 100%. A 100% slope equals a 45-degree angle, and slopes can go up to infinity for vertical surfaces.

Q5: How do I convert slope percentage to degrees?
A: To convert slope percentage to degrees, use the formula: degrees = arctan(slope percentage/100).