1. What is Sidewalk Gradient?

Sidewalk gradient refers to the slope or incline of a sidewalk surface, typically expressed as a percentage. It represents the ratio of vertical rise to horizontal run, multiplied by 100 to convert it to a percentage.

2. How Does the Calculator Work?

The calculator uses the gradient formula:

Where:

• \( \text{Rise} \) — Vertical height difference (ft)
• \( \text{Run} \) — Horizontal distance (ft)

Explanation: The formula calculates the slope percentage by dividing the vertical rise by the horizontal run and multiplying by 100 to get a percentage value.

3. Importance of Gradient Calculation

Details: Calculating sidewalk gradient is crucial for accessibility compliance, drainage planning, and ensuring safe pedestrian pathways. Proper gradients help prevent water accumulation and ensure ADA compliance.

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 gradient for sidewalks?
A: ADA guidelines recommend a maximum gradient of 5% (1:20 slope) for accessible routes, though local regulations may vary.

Q2: How do I measure rise and run accurately?
A: Use a level and measuring tape. Measure vertical difference (rise) over a specific horizontal distance (run) for accurate calculation.

Q3: What's the difference between gradient and slope?
A: Gradient is typically expressed as a percentage, while slope is often expressed as a ratio (e.g., 1:20). They represent the same concept differently.

Q4: Can this calculator be used for other surfaces?
A: Yes, the same formula applies to any surface gradient calculation, including roads, ramps, and other inclined surfaces.

Q5: Why is gradient important for accessibility?
A: Proper gradients ensure that sidewalks are usable by people with mobility impairments, including those using wheelchairs or walkers.