Block wall

Cement blocks and mortar for a block wall

Doors and windows

Taken off the wall area.

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Result

158 blocks

Wall 12.00 m², 150 mm blocks

  • Blocks 158 blocks 150 + 5% wastage
  • Cement 1 bags 0.73 bags for 1:6 mortar
  • Sand 0.05 cubes 0.15 m³
  • Mortar (wet) 0.13 m³
How we calculated this
  1. Wall area 4 × 3 = 12.00 m²
  2. Blocks 12.00 ÷ (0.4 × 0.2) = 150; +5% = 158 blocks
  3. Wet mortar 12.00 × 0.15 − 150 × 0.011115 = 0.133 m³
  4. Dry mortar 0.133 m³ × 1.33 = 0.177 m³
  5. Cement 0.177 ÷ 7 × 1440 kg/m³ ÷ 50 kg = 0.73 bags
  6. Sand 0.177 × 6/7 ÷ 2.832 = 0.05 cubes

Estimates are for budgeting and checking quotes, not structural design. Have a qualified engineer confirm quantities and reinforcement before building.

158 blocks · 1 bags cement See result