1. What is Land Grading?

Land grading is the process of reshaping land to create a specific slope or level surface. It's essential for proper drainage, construction projects, landscaping, and agricultural applications.

2. How Does the Calculator Work?

The calculator uses the slope formula:

Where:

• \( \Delta Elevation \) — Change in elevation (feet)
• \( Distance \) — Horizontal distance (feet)

Explanation: The formula calculates the ratio of vertical change to horizontal distance, typically expressed as a percentage.

3. Importance of Slope Calculation

Details: Accurate slope calculation is crucial for proper drainage planning, foundation preparation, road construction, and ensuring regulatory compliance for various construction and landscaping projects.

4. Using the Calculator

Tips: Enter elevation change in feet and horizontal distance in feet. Both values must be positive numbers. The result will be displayed as a percentage slope.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical slope for drainage?
A: For proper drainage, a minimum slope of 2% (2 feet per 100 feet) is generally recommended.

Q2: How is slope different from grade?
A: Slope and grade are often used interchangeably, though grade sometimes refers to the finished level of a surface, while slope specifically describes the incline.

Q3: What's the maximum slope for accessibility?
A: For wheelchair accessibility, the maximum slope is typically 8.33% (1:12 ratio).

Q4: How do I measure elevation change accurately?
A: Use a transit level, laser level, or smartphone level app for precise elevation measurements.

Q5: When is slope expressed as a ratio vs percentage?
A: Construction often uses ratios (e.g., 1:4), while engineering and landscaping typically use percentages. This calculator provides percentage results.