Materials for brickwork 1:4 (230×110×55)

Assumptions: dry volume = 1.54 × wet volume for concrete and 1.27 × wet volume for mortar; 1 m³ of cement = 28.8 bags of 50 kg; no wastage is added. The volume of brickwork is not stated, so quantities are found per 1 m³ and per 10 m³.

Per 1 m³ brickwork

• Brick with mortar $= 0.240 \times 0.120 \times 0.065 = 1872.0\times 10^{-6}$ m³; bricks per m³ $= 1/1872.0\times10^6 = 534.19$
• Bricks for 1.00 m³ $= 534.19 \times 1.00 = 534$ nos (say 535)
• Volume of bricks only $= 0.230\times0.110\times0.055 = 1391.5\times10^{-6}$ m³ each; wet mortar per m³ $= 1 - 534.19\times1391.5\times10^{-6} = 0.2567$ m³
• Wet mortar for 1.00 m³ $= 0.257$ m³; dry $= 1.27\times0.257 = 0.326$ m³
• Cement $= 1/5\times0.326 = 0.065$ m³ $= 1.9$ bags
• Sand $= 4/5\times0.326 = 0.261$ m³

Per 10 m³ brickwork

• Brick with mortar $= 0.240 \times 0.120 \times 0.065 = 1872.0\times 10^{-6}$ m³; bricks per m³ $= 1/1872.0\times10^6 = 534.19$
• Bricks for 10.00 m³ $= 534.19 \times 10.00 = 5,342$ nos (say 5,342)
• Volume of bricks only $= 0.230\times0.110\times0.055 = 1391.5\times10^{-6}$ m³ each; wet mortar per m³ $= 1 - 534.19\times1391.5\times10^{-6} = 0.2567$ m³
• Wet mortar for 10.00 m³ $= 2.567$ m³; dry $= 1.27\times2.567 = 3.260$ m³
• Cement $= 1/5\times3.260 = 0.652$ m³ $= 18.8$ bags
• Sand $= 4/5\times3.260 = 2.608$ m³

Answer: per m³ about 535 bricks, 1.88 bags cement, 0.261 m³ sand; per 10 m³: 5,342 bricks, 18.8 bags cement, 2.61 m³ sand.