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Verified by Mark Stevens, PEPE, MS in Structural Engineering

Senior Civil Engineer

Concrete Column Calculator

Precision volume estimating for cylindrical support columns. Uses exact geometric logic to calculate high-strength concrete requirements for vertical structural members.

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Density Constants

Concrete150 lb/ft³
Mortar135 lb/ft³
Cement94 lb/ft³

Standard Bag Yields

80lb Bag0.60 ft³
60lb Bag0.45 ft³
40lb Bag0.30 ft³

*Approximate yield after water addition.

Water Ratio Tip

Always start with 3/4 of targeted water. Excess water significantly reduces structural PSI.

Adding a 10% waste factor is industry standard to account for spills, uneven forms, and consolidation.

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Calculation Logic

Volume=π×r2×h\text{Volume} = \pi \times r^2 \times h
Disclaimer: Concrete quantity estimates may vary based on waste, site conditions, and mix design. Consult a licensed contractor for accurate project requirements. Learn about our methodology.

Frequently Asked Questions

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About the Expert: Mark Stevens, PE

Senior Civil Engineer (PE, MS in Structural Engineering)

Mark Stevens is a licensed Professional Engineer with over 20 years of experience in structural design and construction management. He specializes in masonry standards and concrete engineering.

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