Bricks

 Brick should be thoroughly burnt, of uniform color, having plane rectangular faces, sharp straight, right angle edges. Standard Modular size of common building brick is 190X90X90 mm. The size of a Non-Modular brick is 9″X4-3/8″X2-11/16″ (229X111X70 mm). But it is specified as 230X110X70 mm.

– The specification for building bricks is given in ASTM C 62.
– Joint thickness should be within the range of 6mm to 10mm depending upon the size of bricks.
– The total height of 9 cm brick with 5 courses and 5 mortar joints shall be 50 cm. – Horizontal joints on every floor should be at the same level so as to allow proper bonding at junctions.
– The surfaces and edges of the bricks are sharp, square, smooth, and straight. – The minimum compressive strength of first-class bricks should be 10.5 N/mm2 (or 10 N/mm2).
– It can be taken as 100 kg/cm2. These bricks are used for superior work of permanent nature.