Question

The size of the brick is 190 mm × 90 mm × 90 mm and the mortar is 8 mm thick with a ratio of 1: 4. Calculate the number of bricks for 1 meter cube:
1. 526
2. 547
3. 425
4. 483

Answer 1

Correct Answer - Option 1 : 526

Explanation:

Given,

Volume (L × W × H) = 1 m³.

Mortar thickness = 8 mm.

Mortar Ratio = 1: 4

Size of brick = 190 mm × 90 mm × 90 mm or (0.19 m × 0.09 m × 0.09 m).

Size of brick with mortar = 198 mm × 98 mm × 98 mm or (0.198 m × 0.098 m × 0.098 m).

Calculation:

Volume of 1 brick = (0.19 m × 0.09 m × 0.09 m) = 0.001539 m³

Volume of 1 brick with mortar = (0.198 m × 0.098 m × 0.098 m) = 0.0019 m³

No of bricks in 1 m³ = Volume/Volume of bricks with mortar = 1 / 0.0019 = 526 bricks

The nominal and actual size of the brick is taken as:

Type of Brick	Actual size	Nominal size
Standard modular brick	19 cm × 9 cm × 9 cm	20 cm × 10 cm × 10 cm
Standard modular brick tile	19 cm × 9 cm × 5 cm	20 cm × 10 cm × 5 cm