From cylinder to ready-mix order
Round columns and drilled caissons are ordered in cubic yards, so this calculator takes the cylinder volume straight to yards — a 12-inch × 4-foot column is about 0.11 cubic yards, which is why column pours join other work in a single truck. Multiply by the column count for the total order.
Sources and standards
Where these figures come from
Every formula on this page is implemented from the published reference material below. Where a value depends on a regional code, the calculator lets you override it rather than assuming one jurisdiction.
- NIST Office of Weights and Measures — the US customary and SI conversion factors used throughout this tool.
- International Code Council — the International Residential Code and International Building Code.
Figures, formulas and reference tables last verified: 19 September 2026.