1. What is Percent Slope?

Definition: Percent slope measures the steepness or incline of a surface, calculated as the ratio of vertical rise to horizontal run multiplied by 100.

Purpose: It's commonly used in construction, engineering, landscaping, and road design to quantify and communicate slope steepness.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Rise — Vertical change (same units as run)
• Run — Horizontal change (same units as rise)

Explanation: The formula calculates what percentage the vertical rise is compared to the horizontal run.

3. Importance of Percent Slope Calculation

Details: Proper slope calculation ensures proper drainage, ADA compliance (for ramps), structural stability, and safety in various construction projects.

4. Using the Calculator

Tips: Enter the rise (vertical change) and run (horizontal change) in consistent units. The run must be greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between percent slope and degrees?
A: Percent slope is rise/run×100, while degrees use arctangent(rise/run). 100% slope equals 45 degrees.

Q2: What's a typical maximum slope for wheelchair ramps?
A: ADA recommends maximum 8.33% slope (1:12 ratio).

Q3: How do I measure rise and run in the field?
A: Use a level and measuring tape, or specialized slope measuring tools.

Q4: What does a 100% slope mean?
A: A 100% slope means the rise equals the run (45 degree angle).

Q5: Can percent slope be greater than 100%?
A: Yes, when rise exceeds run (slope steeper than 45 degrees).