1. What is the Granite Boulder Weight Formula?

The formula calculates the approximate weight of a spherical granite boulder based on its radius and the density of granite. It uses the volume formula for a sphere multiplied by the material density.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( r \) — Radius of the boulder in feet
• \( Density \) — Density of granite (typically 168 lb/ft³)
• \( \pi \) — Mathematical constant (~3.14159)

Explanation: The formula first calculates the volume of a sphere, then multiplies by density to get weight.

3. Importance of Weight Calculation

Details: Knowing a boulder's weight is crucial for transportation planning, structural engineering, landscaping projects, and safety assessments.

4. Using the Calculator

Tips: Measure the boulder's average radius in feet. Use standard granite density (168 lb/ft³) or adjust for specific granite type. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: It provides a good estimate for spherical boulders. Irregular shapes may require more complex calculations.

Q2: What's the typical density of granite?
A: Granite density typically ranges from 165-175 lb/ft³, with 168 lb/ft³ being a common average.

Q3: How to measure radius for irregular boulders?
A: Take multiple measurements and use an average, or measure circumference and calculate radius (C = 2πr).

Q4: Can this be used for other stone types?
A: Yes, but you'll need to adjust the density parameter for the specific stone type.

Q5: What if my boulder isn't perfectly spherical?
A: The calculation will overestimate weight. For irregular shapes, consider using water displacement methods.