Concrete Column Cost Calculator
Calculate the exact amount of concrete and cost for round columns or piers. Enter dimensions below to get instant results.
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Frequently Asked Questions
How much does a concrete column cost?
A typical residential concrete column costs $50 to $200 for materials depending on size. Ready-mix concrete costs about $125 to $165 per cubic yard. A 12-inch diameter column that is 3 feet tall uses about 0.38 cubic yards for 4 columns with 10% waste.
What diameter should a concrete column be?
Common residential column diameters are 8, 10, or 12 inches for deck posts and porch supports. Structural columns for buildings may be 16 to 24 inches or larger. Always follow your structural engineer's specifications and local building codes.
How do I build a concrete column?
Use a cardboard tube form (Sonotube) set in a footing hole. Place rebar inside for reinforcement, brace the tube plumb, then pour concrete. For columns taller than 4 feet, pour in lifts and vibrate to remove air pockets. Remove the tube form after the concrete cures.
Do concrete columns need rebar?
Yes, most structural concrete columns require vertical rebar with horizontal ties or spirals. Typical residential columns use 4 vertical #4 or #5 bars with #3 ties spaced every 12 inches. Non-structural columns (decorative) may not need rebar but benefit from at least one center bar.
How long does a concrete column take to cure?
Concrete reaches about 70% of its strength in 7 days and full design strength in 28 days. Keep the column moist during the first 7 days for proper curing. Avoid loading the column with structural weight for at least 7 days, preferably 28 days.