Step 2
Once you have done this you need to work out the total area. This is done by using the following formula:
A (width) x B (length) = C (Total Area)
Step 3
Now you need to multiply C by the required depth of material.
C x required depth of material = TOTAL REQUIRED AMOUNT OF MATERIAL (in cubic metres)
|
USEFUL CONVERSIONS FOR CALCULATING DEPTHS
|
|
Inches
|
Centimetres
|
Metres
|
|
1"
|
2.5cm
|
0.025 m
|
|
2"
|
5cm
|
0.05 m
|
|
2.5"
|
6.25cm
|
0.062 m
|
|
3"
|
7.5cm
|
0.075 m
|
Step 4
|
If you are working with products that are sold by the cubic metre such as woodchip, compost or bark the figure you reached in Step 3 is the amount you actually need.
You should allow an extra 10% for compaction as most natural materials settle and condense.
|
 |
For other products you will need to convert cubic metres into tonnes. There are different methods for doing this according to which product it is:-
|
|
For Soil
|
Multiply C by 1.3
|
|
|
For Sand
|
Multiply C by 1.4
|
|
|
For Decorative Aggregates
|
Multiply C by 1.6
|
|
Remember, there are:-
|
|
1000 litres in a m³
|
|
1000 kg in a tonne (equal to 40 x 25kg bags)
|
THE ABOVE INFORMATION IS INTENDED AS A GUIDE ONLY, WE CANNOT BE HELD RESPONSIBLE FOR CALCULATIONS & APPLICATIONS BEYOND OUR CONTROL.
