1. What is Sidewalk Slope Calculation?

Sidewalk slope calculation determines the angle of incline or decline of a sidewalk surface using the rise (vertical change) and run (horizontal distance). This is important for accessibility compliance and safety standards.

2. How Does the Calculator Work?

The calculator uses the slope formula:

Where:

• \( Rise \) — Vertical height difference (feet)
• \( Run \) — Horizontal distance (feet)

Explanation: The arctangent function converts the ratio of rise to run into an angle measurement in degrees, representing the slope of the sidewalk.

3. Importance of Slope Calculation

Details: Proper slope calculation ensures sidewalks meet ADA requirements for accessibility, prevents water pooling, and maintains safe walking surfaces for all users.

4. Using the Calculator

Tips: Enter rise and run values in feet. Both values must be positive numbers, with run greater than zero for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum allowable slope for ADA compliance?
A: The maximum cross slope is 2% (1:50) and maximum running slope is 5% (1:20) for accessible routes.

Q2: How do I measure rise and run in the field?
A: Use a level and measuring tape to determine vertical change over a specific horizontal distance.

Q3: What's the difference between slope ratio and slope angle?
A: Slope ratio (rise:run) expresses steepness as a ratio, while slope angle expresses it in degrees.

Q4: Can this calculator be used for other applications?
A: Yes, the same calculation applies to ramps, driveways, and any other inclined surfaces.

Q5: How accurate should slope measurements be?
A: For compliance purposes, measurements should be accurate to within 0.1% slope or 0.1 degrees.