Concrete is measured and purchased in cubic metres.
Follow these easy steps to work out the volume of concrete required.
Area in square metres = Length (m) x Width (m). Using a typical garage floor as an example:
Area = 10m x 3m = 30m²
This may depend on your excavation, but in any case minimum thickness should be:
| |
Paths |
75mm |
| |
Driveways |
100mm |
| |
Garage Floors |
125mm |
For our example, thickness = 125mm
Read the volume required from this chart.
For our example:
| |
Area |
= 30m² |
| |
Thickness |
= 125mm |
| |
Volume |
= 3.8m³ |
Alternatively,
Volume in cubic metres = 
For our example:
Volume required = 
The nearest available quantity = 3.8m³
It is wise to add a little extra for wastage and variations in depth.
For our example we would order 4.0m³.
Do you need permission for your
project from the local council?
|
| Cubic Metres to Order |
| Area m² |
Thickness (mm) |
| |
75 |
100 |
125 |
150 |
| 5 |
.40 |
.60 |
.80 |
.80 |
| 10 |
.80 |
1.00 |
1.40 |
1.60 |
| 15 |
1.20 |
1.60 |
2.00 |
2.00 |
| 20 |
1.60 |
2.00 |
2.60 |
3.00 |
| 25 |
2.00 |
2.60 |
3.20 |
3.80 |
| 30 |
2.40 |
3.00 |
3.80 |
4.60 |
| 35 |
2.80 |
3.60 |
4.40 |
5.40 |
| 40 |
3.00 |
4.00 |
5.00 |
6.00 |
| 45 |
3.40 |
4.60 |
5.80 |
6.80 |
|
