20mm Aggregate Depth Calculator

Aggregate Depth Formula:

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

Aggregate Depth (ft):

1. What is a 20mm Aggregate Depth Calculator?

Definition: This calculator estimates the depth of 20mm aggregate material based on the total volume and area dimensions.

Purpose: It helps construction professionals and landscapers determine how deep the aggregate layer will be when spread over a specific area.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

\( D \) — Depth of aggregate (feet)
\( V \) — Volume of aggregate (cubic feet)
\( L \) — Length of area (feet)
\( W \) — Width of area (feet)

Explanation: The aggregate volume is divided by the area (length × width) to determine the average depth.

3. Importance of Aggregate Depth Calculation

Details: Proper depth calculation ensures adequate coverage for drainage, load-bearing capacity, and material efficiency.

4. Using the Calculator

Tips: Enter the aggregate volume in cubic feet, and the length and width of the area in feet. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is 20mm aggregate typically used for?
A: 20mm aggregate is commonly used for drainage layers, sub-bases for paving, and concrete mixes.

Q2: How do I convert depth from feet to inches?
A: Multiply the depth in feet by 12 to get inches (e.g., 0.25 ft × 12 = 3 inches).

Q3: What's a typical depth for aggregate layers?
A: For driveways, 4-6 inches is common. For footpaths, 2-3 inches may suffice.

Q4: How do I find the aggregate volume?
A: Use weight and density: Volume = Weight / Density (20mm aggregate is typically about 1.6 tons/cu yd or 105 lb/cu ft).

Q5: Does this account for compaction?
A: No, consider adding 10-20% more material if significant compaction is expected.

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