classification based on qualities

1) Internal quality bricks

• Suitable for internal use olny ; may need protection on site during bad weather

2)Ordinary quality bricks

• Less durable than special quality but normally durable in the external face of a building .Some types are unsuitable for exposed situations

3)Special quality bricks

• For use in conditions of extreme exposure where the structure may become saturated and frozen , such as retaining walls and pavings