DIMENSIONAL SPECIFICATION OF BUILDING BRICK

A brick is rectangular in shape and of size that can be conveniently handled with one hand. Brick may be made of burnt clay or mixture of sand and lime or of Portland cement concrete. Clay bricks are used for building-up exterior and interior walls, partitions, piers, footings and other load bearing structures.

Dimensional Relation Of Building Brick :

• Length of brick :  2 × width of brick + thickness of mortar

• Height of brick :  Height of brick is equal to the width of brick

Size Of a Standard Brick (Modular Brick) :

• 190 × 90 × 90 mm
• and 190 × 90 × 40 mm.

When placed in masonry the 190 × 90 × 90 mm building brick with mortar becomes 200 × 100 × 100 mm.

Frog :

An indent called frog, is provided for 90 mm high bricks,  10–20 mm deep. The purpose of providing frog is to form a key for holding the mortar and therefore, the bricks are laid with frogs on top. Frog is not provided in 4 cm high bricks and extruded bricks.

• frog size : The size of frog should be 100 × 40 × 10 mm.

Note : The bricks available in most part of the country still are 9" × 4.5" × 3" and are known as field bricks.