2010年8月6日星期五

brick

Concrete brick
  • Concrete brick are manufactured in the same size as clay bricks
  • THey tend to be more consistent in shape , size and colour than clay bricks
  • THey come in a variety of colours and finishes
  • Appearance and properties vary between manufacturers , although the concrete bricks does have a different appearance from clay brick , which extends the choice to the designer.


Bricks classifications
  • Bricks 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 classifications roughly conincide 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

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