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How to Calculate Gravel Yardage Required

Gravel Volume Formula:

\[ V = \frac{L \times W \times D}{27} \]

feet
feet
inches

1. What is a Gravel Yardage Calculator?

Definition: This calculator estimates the volume of gravel needed based on the project area dimensions (length, width, and depth).

Purpose: It helps determine how much gravel is required for landscaping, construction, or drainage projects.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ V = \frac{L \times W \times D}{27} \]

Where:

  • \( V \) — Volume of gravel (cubic yards)
  • \( L \) — Length of area (feet)
  • \( W \) — Width of area (feet)
  • \( D \) — Depth of gravel (inches, converted to feet)
  • 27 — Conversion factor (cubic feet per cubic yard)

Explanation: The calculator multiplies length × width × depth (converted to feet) then divides by 27 to convert cubic feet to cubic yards.

3. Importance of Gravel Calculation

Details: Accurate gravel calculation ensures proper project planning, prevents material shortages, and helps control project costs.

4. Using the Calculator

Tips: Measure the area's length and width in feet. Enter the desired gravel depth in inches. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 27?
A: There are 27 cubic feet in 1 cubic yard (3 feet × 3 feet × 3 feet).

Q2: How do I measure irregular areas?
A: Break into rectangular sections, calculate each separately, then sum the volumes.

Q3: What's a typical gravel depth?
A: For driveways: 4-6 inches, for walkways: 2-3 inches, for drainage: 6-12 inches.

Q4: Should I add extra for compaction?
A: Yes, add 10-20% more volume to account for compaction, especially for driveways.

Q5: How many tons is a cubic yard?
A: Typically 1.2-1.5 tons per cubic yard depending on gravel type and moisture.

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