1. What is the Crushed Stone Calculator?

The Crushed Stone Calculator helps estimate the amount of crushed stone needed for a project in cubic yards, based on area in square feet and depth in inches.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{Area} \) — Area in square feet
• \( \text{Depth} \) — Depth in inches
• 27 — Conversion factor (cubic feet to cubic yards)

Explanation: The formula converts area and depth measurements into cubic yards, the standard unit for crushed stone materials.

3. Importance of Accurate Calculation

Details: Accurate calculation ensures you purchase the right amount of material, avoiding project delays and unnecessary costs from over-ordering or under-ordering.

4. Using the Calculator

Tips: Enter area in square feet and depth in inches. All values must be valid positive numbers. The result will be in cubic yards.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 27 in the formula?
A: There are 27 cubic feet in 1 cubic yard, so dividing by 27 converts cubic feet to cubic yards.

Q2: What's a typical depth for crushed stone projects?
A: Typical depths range from 2-4 inches for walkways, 4-6 inches for driveways, and 6-8 inches for heavy traffic areas.

Q3: Should I order extra material?
A: It's recommended to order 10-15% extra material to account for compaction, settling, and irregularities in the project area.

Q4: How do I measure irregularly shaped areas?
A: Break the area into smaller regular shapes (rectangles, triangles), calculate each separately, then sum the results.

Q5: Does the type of crushed stone affect the calculation?
A: The calculation provides volume, not weight. Different stone types have different weights per cubic yard, so consult your supplier for weight estimates.