Moulding of Bricks

Bricks are made in traditional size (in inch) and in metric size (cm) as prescribed by the Bureau of Indian Standards. Metric size bricks are called modular bricks. Nominal size of bricks is the size including thickness of the mortar. Hence, the actual size of modular bricks is 19 cm × 9 cm × 9 cm and the nominal size of modular bricks is 20 cm × 10 cm × 10 cm.

A brick mould is a rectangular box of steel or wood. Both ends, the top and bottom, of the box are open. The inside dimensions of the mould are 20 cm × 10 cm × 10 cm (Fig. 3.2).

Moulding of bricks is carried out either by hand or by machine.

Figure 3.2 Typical steel brick mould