Transparent Engineering Math
Calculation Methodology & Standards
We believe calculator platforms should never hide their math. Here is the exact mathematical model used by Real Gravel Calculator.
1. Geometric Surface Area Formulas
- Rectangle: Area = Length Γ Width
- Circle: Area = Ο Γ RadiusΒ² = Ο Γ (Diameter Γ· 2)Β²
- Triangle: Area = 0.5 Γ Base Γ Height
- Trapezoid: Area = [(Top Base + Bottom Base) Γ· 2] Γ Height
- L-Shape: Area = (Length_A Γ Width_A) + (Length_B Γ Width_B)
2. Three-Dimensional Volume Conversion
Depth in Feet = Depth in Inches Γ· 12
Base Volume (cu ft) = Surface Area (sq ft) Γ Depth in Feet
Cubic Yards = Base Volume (cu ft) Γ· 27
Metric Volume (cu meters) = Cubic Yards Γ 0.764555
3. Compaction & Waste Coefficient
Loose bulk aggregate shrinks under compaction. Our calculator applies the waste multiplier:
Recommended Order Quantity = Calculated Volume Γ (1 + Waste Percentage Γ· 100)
4. Weight Conversion (US Tons & Pounds)
Weight is calculated by multiplying recommended order cubic yards by the laboratory loose bulk density (tons/ydΒ³):
US Tons = Cubic Yards Γ Material Density (tons/ydΒ³) | Pounds = US Tons Γ 2,000 lbs