20mm Gravel Coverage Calculator Free

20mm Gravel Volume Formula:

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

Gravel Volume (cu yd):

1. What is a 20mm Gravel Coverage Calculator?

Definition: This calculator estimates the volume of 20mm gravel needed based on the area dimensions and desired depth.

Purpose: It helps determine how much 20mm gravel is required for landscaping, driveways, or construction 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 (feet)
\( W \) — Width (feet)
\( D \) — Depth (feet)
27 — Cubic feet per cubic yard (conversion factor)

Explanation: The calculator converts all measurements to feet, calculates cubic feet, then converts to cubic yards.

3. Importance of Gravel Volume Calculation

Details: Proper gravel volume estimation ensures adequate coverage, proper drainage, and cost-effective material purchasing.

4. Using the Calculator

Tips: Enter the length and width in feet, and depth in inches. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 20mm gravel specifically?
A: 20mm (3/4") gravel is a standard size for many applications, providing good drainage while being stable underfoot.

Q2: How do I convert inches to feet for depth?
A: The calculator automatically converts inches to feet (dividing by 12) for the calculation.

Q3: What's the typical depth for different applications?
A: Driveways: 4-6 inches, Walkways: 2-3 inches, Drainage layers: 6-12 inches.

Q4: How many cubic yards are in a ton of 20mm gravel?
A: Approximately 0.66 cu yd per ton (varies by material density).

Q5: Does this include waste or overage?
A: No, consider adding 5-10% to the calculated volume for project contingencies.

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