1. What is #57 Stone?

#57 stone is a specific size of crushed stone (approximately 1/2" to 1" in diameter) commonly used for drainage, driveways, and concrete mixes. It's named for its size classification in the ASTM specification.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( \text{Area} \) — Area in square feet
• \( \text{Depth} \) — Depth in inches
• \( \text{Density} \) — Density in tons per cubic yard (typically 1.5-1.6 for #57 stone)

Explanation: The formula first converts the area and depth to cubic yards, then multiplies by the density to get total tons required.

3. Importance of Accurate Calculation

Details: Accurate calculation helps in proper project planning, cost estimation, and ensures you order the right amount of material (avoiding shortages or excess).

4. Using the Calculator

Tips: Measure your area accurately in square feet. Typical depth for driveways is 4-6 inches, for drainage projects 6-12 inches. Default density is 1.5 tons/cu yd (adjust if your supplier specifies different).

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density for #57 stone?
A: Most #57 stone has a density between 1.4-1.6 tons per cubic yard, with 1.5 being a common average.

Q2: How much does #57 stone cover per ton?
A: At 4" depth, one ton covers about 80-100 sq ft. At 6" depth, about 50-60 sq ft per ton.

Q3: What's the difference between #57 and #57 limestone?
A: #57 is the size specification. Limestone is one type of material that comes in #57 size (others include granite, trap rock).

Q4: Should I order extra material?
A: It's recommended to order 10-15% extra to account for compaction, uneven surfaces, and spillage.

Q5: How do I measure irregular areas?
A: Break the area into rectangles, calculate each separately, then sum the totals.