3rd class brick

The quality and strength of third class bricks are too much low and they do not fulfill all the properties of good bricks. The basic properties of these bricks are given below.

Third Class Bricks	Properties
1. Type	1. Class 3
2. Feature	2. Ground molded.
3. Shape & Size	3. Non-uniform
4. Surface & Edges	4. Irregular and distorted edges.
5. Color	5. Non-uniform and dark.
6. Maximum Water Absorbing	6. 25% of its self-weight when submerged in water for 24 hours.
7. Crushing Strength	7. 30 kg/cm2
8. Making Process	8. Burnt in kilns and may be overburnt or underburnt
9. Use	9.  Used in temporary structures.