3 4 Crushed Stone Calculator

Crushed Stone Formula:

\[ \text{Tons} = \left( \frac{\text{Length (ft)} \times \text{Width (ft)} \times (\text{Depth (in)} / 12)}{27} \right) \times \text{Density (tons/cu yd)} \]

Length:

feet

Width:

feet

Depth:

inches

Density:

tons/cu yd

Tons of 3/4" Crushed Stone Needed:

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1. What is the 3/4 Crushed Stone Calculator?

The 3/4 Crushed Stone Calculator estimates the tonnage of crushed stone needed for a project based on area dimensions and desired depth. It's commonly used for landscaping, construction, and road base projects.

2. How Does the Calculator Work?

The calculator uses the following formula:

\[ \text{Tons} = \left( \frac{\text{Length} \times \text{Width} \times (\text{Depth}/12)}{27} \right) \times \text{Density} \]

Where:

Length — Project area length in feet
Width — Project area width in feet
Depth — Desired depth in inches
Density — Weight per cubic yard (typically 1.4-1.7 tons/cu yd for 3/4" crushed stone)
27 — Conversion factor (cubic feet to cubic yards)
12 — Conversion factor (inches to feet)

Explanation: The formula converts all measurements to consistent units, calculates volume in cubic yards, then multiplies by material density to get weight in tons.

3. Importance of Accurate Calculation

Details: Proper calculation ensures you order the right amount of material - too little delays your project, while too much wastes money on excess material and disposal.

4. Using the Calculator

Tips: Measure your project area carefully. For irregular shapes, divide into rectangles. Typical depth for walkways is 4", driveways 8-12". Density varies by stone type and compaction.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical density for 3/4" crushed stone?
A: Most 3/4" crushed stone has a density between 1.4-1.7 tons per cubic yard, depending on stone type and compaction.

Q2: How do I measure an irregular area?
A: Divide into rectangular sections, calculate each separately, then sum the totals.

Q3: Should I order extra material?
A: It's recommended to order 10-15% extra to account for compaction, uneven surfaces, and calculation variances.

Q4: What's the difference between crushed stone and gravel?
A: Crushed stone is angular and mechanically crushed, while gravel is rounded and naturally formed. Crushed stone typically compacts better.

Q5: How deep should I lay 3/4" crushed stone?
A: For walkways: 4", driveways: 8-12", patio bases: 4-6". Depth depends on load requirements and subgrade conditions.