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Sonotube Calculator
Calculate concrete volume and pre-mixed bags required for Sonotube columns
Sonotube Standard: Cylinder volume is calculated as $\pi \times r^2 \times h$. One 80 lb concrete bag yields approximately $0.60\text{ cu ft}$, and a 60 lb bag yields $0.45\text{ cu ft}$. Includes a 5% waste allowance.
Column Dimensions & Quantity
Calculation Results
⚠️ Ensure Sonotube forms are braced securely and plumbed before pouring concrete to prevent shifting or bulging under wet concrete pressure.