Traditional Bricks are those which have not been standardized in size. The dimensions of traditional bricks vary from place to place. The length varies from 20 to 25 cm, width varies from 10 to 13 cm and thickness varies from 5 cm to 7.5 cm. The commonly adopted nominal size of traditional brick is 23 cm x 11.4 cm x 7.6 cm (9”x4 ½ “x3”) approximately.
Modular bricks conform to the size laid down by Bureau of Indian Standard Institution, India .Any brick which is of the same uniform size as laid down by BIS is known as the modular brick. The actual size of the brick is 19cm x 9cm x9cm. . Masonry modular bricks are economical to manufacture, require less area for drying, and staking and requires less brick work for the same surface area of the wall in comparison to conventional bricks. The masonry with modular bricks workout to be cheaper.