1. What is Slope Calculation?

The slope calculation determines the steepness or incline between two points, expressed as a percentage. It's commonly used in engineering, construction, and geography to measure grade or gradient.

2. How Does the Calculator Work?

The calculator uses the slope formula:

Where:

• \( elev2 \) — Second elevation (feet)
• \( elev1 \) — First elevation (feet)
• \( distance \) — Horizontal distance between points (feet)

Explanation: The formula calculates the vertical change (rise) divided by the horizontal distance (run), then converts it to a percentage by multiplying by 100.

3. Importance of Slope Calculation

Details: Slope percentage is crucial for designing roads, drainage systems, wheelchair ramps, and determining land usability. It affects water runoff, construction feasibility, and accessibility.

4. Using the Calculator

Tips: Enter both elevations in feet and the horizontal distance between them in feet. All values must be positive numbers, and distance must be greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What does a 5% slope mean?
A: A 5% slope means a vertical rise of 5 feet for every 100 feet of horizontal distance.

Q2: What's considered a steep slope?
A: Generally, slopes above 15% are considered steep, while above 25% is very steep. Building becomes challenging above 30%.

Q3: How is slope different from angle?
A: Slope is a ratio expressed as percentage, while angle is measured in degrees. 45° equals 100% slope.

Q4: Can I use different units?
A: The calculator uses feet, but you can use any unit as long as all three inputs use the same unit.

Q5: What does negative slope mean?
A: Negative slope indicates a downward incline from the first point to the second point.