Definition of brickA brick is a block or a single unit of a kneaded clay-bearing soil, sand and lime, or concrete material, fire-hardened or air-dried, used in masonry construction.

Fired brick

Normally, brick contains the following ingredients:

1. Silica (sand) – 50% to 60% by weight

2. Alumina (clay) – 20% to 30% by weight

3. Lime – 2 to 5% by weight

4. Iron oxide – ≤ 7% by weight

Specification of bricks in Pakistan and other countries

Face brick ("house brick") sizes, (alphabetical order)

Standard Imperial Metric

pakistan 9 × 41/2 × 3 in 230 × 114 × 76 mm

 Denmark 9 × 4¼ × 2¼ in 228 × 108 × 54 mm

 Germany 9 × 4¼ × 2¾ in 240 × 115 × 71 mm

 India 9 × 4¼ × 2¾ in 228 × 107 × 69 mm

 Romania 9 × 4¼ × 2½ in 240 × 115 × 63 mm

 Russia 10 × 4¾ × 2½ in 250 × 120 × 65 mm

 South Africa 8¾ × 4 × 3 in 222 × 106 × 73 mm

Sweden 10 × 4¾ × 2½ in 250 × 120 × 62 mm

 United Kingdom 8½ × 4 × 2½ in 215 × 102.5 × 65 mm

 United States 7⅝ × 3⅝ × 2¼ in 194 × 92 × 57 mm

Bricks Types

There are various types of bricks used in masonry.

1. Common Burnt Clay Bricks

2. Sand Lime Bricks (Calcium Silicate Bricks)

3. Engineering Bricks

4. Concrete  Bricks

5. Fly ash Clay Bricks