Last Updated 28/07/2004
Estimating Data
Blocks per Square Metre
- There are 12.5 blocks per square metre of wall area for 390mm long * 190mm high block work.
- There are 25 blocks per square metre of wall area for 390mm long * 90mm high block work.
- There are 50 Australian Standard bricks per square metre.
Mortar Quantities
Approximately 1200 blocks will be laid with 1 cubic metre of mortar (shell bedded).
- 4 Parts by volume of correctly graded mortar sand.
- 1 part by volume of Cement.
- 1/4 Part by volume of Hydrated Lime (If required).
Block fill Quantities
| Block Type |
Fill Required (m3 per block)
|
| 20-01 |
0.006422 |
| 20-12 (Bond Beam) |
0.005577 |
| 15-01 |
0.004446 |
| 15-12 (Bond Beam) |
0.003295 |
| 30-42 |
0.011970 |
| 20-48 (H-Block) |
0.0068 |
Paving
Paving is measured in square metres. To calculate the square metres of an area just do the following.
- For a square or rectangular area: Length * Width
Eg: An area is 20m long & 2.5 m wide.
20m * 2.5m = 50m2
- For a right angled triangular area: Length * Width * 0.5
Eg: A Triangular area is 10m long & 10m wide.
10m * 10m * 0.5 = 50m2
- For irregularly shaped areas it is best to first draw the area on paper, then break it down into rectangles, squares and triangles. Work out each area separately then just add them together.