The unit of measurement for ready mix concrete is volume.
Understanding Concrete Measurement Units
Ready-mix concrete, the concrete delivered to a site in a plastic state, is universally traded based on its volume. This is the most practical way to measure the quantity of concrete needed for a specific area or structure.
As stated in the reference, ready-mix concrete is bought and sold by volume.
Standard International Units
In most parts of the world following the metric system, the standard unit of volume for ready mix concrete is the cubic meter (m³).
- A cubic meter represents the volume of a cube with sides that are one meter in length (1m x 1m x 1m).
- This is the common unit used in Europe, Asia, Africa, and many other regions.
US Standard Units
In the United States, the customary unit of volume for ready mix concrete is the cubic yard (yd³).
- A cubic yard represents the volume of a cube with sides that are one yard in length (1yd x 1yd x 1yd).
- This unit is specific to the US market.
Unit Comparison
Understanding the difference between the two main units is crucial, especially when dealing with projects or specifications from different regions.
| Unit | Symbol | System | Approx. Conversion to Cubic Meters |
|---|---|---|---|
| Cubic Meter | m³ | Metric | 1 m³ |
| Cubic Yard | yd³ | US Customary | ~0.765 m³ |
Note: Conversions should be precise for calculations, but this table provides a general idea.
Ordering Ready Mix Concrete
When ordering ready mix concrete, you will need to specify the total volume required for your project in either cubic meters or cubic yards, depending on your location.
Here are some practical points:
- Calculation is Key: Accurate calculation of the required volume based on the dimensions of your pour (length x width x depth) is essential to avoid over-ordering or under-ordering.
- Standard Truck Sizes: Concrete trucks typically carry specific volumes. Knowing these can help in planning deliveries.
- Minimum Orders: Suppliers often have minimum order sizes (e.g., 1 m³ or 1 yd³) and may charge short-load fees for smaller quantities.
In summary, whether you're undertaking a small residential project or a large commercial build, you will purchase ready mix concrete based on its volume, measured in cubic meters or cubic yards.
