20mm Gravel Calculator

20mm Gravel Volume Formula:

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

Gravel Volume (cu yd):

1. What is a 20mm Gravel Calculator?

Definition: This calculator estimates the volume of 20mm gravel needed based on length, width, and depth measurements.

Purpose: It helps construction professionals and DIYers determine how much 20mm gravel is required for projects like driveways, paths, or foundations.

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 — Conversion factor (cubic feet per cubic yard)

Explanation: The length, width, and depth are multiplied to get cubic feet, then divided by 27 to convert to cubic yards.

3. Importance of 20mm Gravel Volume Calculation

Details: Proper gravel volume estimation ensures stable surfaces, proper drainage, and cost-effective material purchasing. 20mm gravel is ideal for drainage and base layers.

4. Using the Calculator

Tips: Enter the length, width, and depth in feet. All values must be > 0. For depth, consider typical applications (e.g., 4-6 inches for driveways).

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 27?
A: There are 27 cubic feet in 1 cubic yard, so we divide by 27 to convert the volume to standard gravel measurement units.

Q2: What's special about 20mm gravel?
A: 20mm gravel (about 3/4 inch) provides excellent drainage while being stable enough for walking and light vehicle traffic.

Q3: How do I measure depth in feet?
A: Convert inches to feet by dividing by 12 (e.g., 6 inches = 0.5 feet).

Q4: Does this include compaction?
A: No, consider adding 10-20% more volume to account for compaction depending on your project needs.

Q5: How many tons is a cubic yard of 20mm gravel?
A: Approximately 1.3-1.5 tons per cubic yard, depending on material density and moisture content.

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