River Rock Coverage Calculator

Coverage Area Formula:

\[ A = \frac{V \times 27}{D} \]

Coverage Area (sq ft):

1. What is a River Rock Coverage Calculator?

Definition: This calculator estimates the area that can be covered with river rock based on the volume of rock available and the desired depth of coverage.

Purpose: It helps landscapers and homeowners determine how much area a given amount of river rock will cover at a specified depth.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ A = \frac{V \times 27}{D} \]

Where:

\( A \) — Coverage area (square feet)
\( V \) — Volume of river rock (cubic yards)
\( 27 \) — Conversion factor (cubic feet per cubic yard)
\( D \) — Desired depth (feet)

Explanation: The rock volume is converted to cubic feet, then divided by the desired depth to determine coverage area.

3. Importance of Coverage Calculation

Details: Accurate coverage estimation ensures proper material ordering, prevents waste, and helps with project budgeting.

4. Using the Calculator

Tips: Enter the river rock volume in cubic yards and desired depth in feet (default 0.25 ft = 3 inches). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical depth for river rock?
A: Common depths are 2-3 inches (0.17-0.25 ft) for decorative purposes, 4-6 inches for drainage applications.

Q2: How do I measure my river rock volume?
A: Use length × width × height (in feet) divided by 27 for cubic yards, or consult your supplier for delivery amounts.

Q3: Does this account for compaction?
A: No, river rock doesn't compact significantly. For materials that compact, you may need to add 10-20% more volume.

Q4: Can I use this for other materials?
A: Yes, this works for any bulk material where you know the volume and desired depth (mulch, gravel, etc.).

Q5: Should I add extra for borders or edging?
A: Yes, consider adding 5-10% to your calculated volume for borders or irregular shapes.

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