brick classification

• Brick may be classified in accordance with their uses as commons , facings and engineering bricks or by their quality as internal quality , ordinary quality , and special quality
• THe use and quality classification roughly coincide as commons are much used for internal walls , facings or ordinary quality for external walls and engineering or special quality bricks for their density and durability in positions of extreme exposure.
• In cost , commons are cheaper than facings and facings cheaper than engineering bricks

Classification based on used

Common brick

1. These are bricks that are sufficiently hard to carry the loads normally supported by brickwork safely.
2. Because they have a dull texture or poor colour , they are not in demand for use as facing bricks
3. Common bricks are used for internal walls tat are not usually exposed to view .
4. Suitable for general building work but having no special claim to give an attractive appearance

Facing brick

1. This incules any brick that is sufficiently hard burned to carry normal loads , is capable of withstanding the effects of rain , wind and frost without breaking up and that is thought to have a pleasant appearance
2. Specially made or selected to have an attractive appearance when used without rendering or plaster.(good attractive appearance without plastering )

Engineering bricks

1. THese are bricks that have been made from selected clay , that have been careefully prepared by crushing , have been very heavily moulded and carefully burned so that the finished brick is very solid and hard and is capavle of safety carrying much heavier load than other types of brick .
2. THse bricks are very hard , dense and do not readily absorb water .
3. These bricks are mainly used for walls carrying exceptionally heavy load , for brick pier and general engineering works