1. What is Slope Ratio?

Slope ratio represents the steepness of a ramp or incline, expressed as the ratio of vertical rise to horizontal run. It's commonly used in construction, accessibility planning, and engineering to ensure safe and functional slopes.

2. How Does the Calculator Work?

The calculator uses the slope ratio formula:

Where:

• \( rise \) — Vertical change (feet)
• \( run \) — Horizontal change (feet)

Explanation: The calculator divides the vertical rise by the horizontal run to determine the slope ratio, which is then converted to the standard "1:X" format used in construction and design.

3. Importance of Slope Ratio Calculation

Details: Proper slope calculation is essential for ADA compliance, building code requirements, and ensuring safe access for people with mobility challenges. Different applications have specific maximum slope requirements.

4. Using the Calculator

Tips: Enter both rise and run measurements in feet. Both values must be positive numbers. The calculator will provide the slope ratio in both decimal and standard ratio format.

5. Frequently Asked Questions (FAQ)

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

Q2: How do I convert slope ratio to percentage?
A: Multiply the ratio by 100. For example, 1:12 ratio = (1/12)×100 = 8.33%.

Q3: What's the difference between slope ratio and slope angle?
A: Slope ratio is rise:run, while slope angle is measured in degrees from horizontal.

Q4: What slope ratio is recommended for vehicle ramps?
A: Typically 1:6 to 1:8 for cars, but steeper slopes may be used for specific vehicles.

Q5: How do I measure rise and run accurately?
A: Use a level and measuring tape. For run, measure horizontally, not along the slope.