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Materials for brick wall 10 m (1:5)

Short answer

Net masonry volume is 6.238 m3 after deducting openings. Using nominal brick size 240x120x65 mm and a 1:5 mortar, materials required: bricks 3332 nos., cement 9.99 bags (0.347 m3), sand 1.734 m3.

Calculate quantities of material required for brick wall of a building L × B × H = 10 m × 0.23 m × 3 m with 10 mm thick in (1:5) cement sand mortar. The wall contains two windows of size 1.2 m × 1.2 m. Take standard size of brick.

Net volume of masonry

  • Gross volume = 10 x 0.23 x 3 = 6.900 m³
  • Openings = 2 x 1.2 x 1.2 x 0.23 = 0.6624 m³
  • Net volume = 6.900 - 0.6624 = 6.2376 m³

Bricks

Using the standard brick 230 x 110 x 55 mm with 10 mm mortar joints, the nominal size is 240 x 120 x 65 mm.

Bricks per m3=10.240×0.120×0.065=534.19\text{Bricks per m}^3 = \frac{1}{0.240 \times 0.120 \times 0.065} = 534.19

Number of bricks = 534.19 x 6.2376 = 3332 nos. (about 3499 nos. with 5% wastage).

Mortar (1:5)

  • Volume of bricks without mortar = 3332 x 0.23 x 0.11 x 0.055 = 4.6365 m³
  • Wet mortar = 6.2376 - 4.6365 = 1.6011 m³
  • Dry mortar = 1.6011 x 1.30 = 2.0814 m³
  • Cement = 2.0814/6 = 0.3469 m³ = 499.5 kg = 9.99 bags (50 kg)
  • Sand = 2.0814 x 5/6 = 1.734 m³

Answer: Bricks = 3332 nos.; cement = 9.99 bags (0.347 m³); sand = 1.734 m³.

✓ Answer checked by Claude Opus 5.5 (high effort)

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