Concept: Sun-Dried or Unburnt Clay Bricks: ● The Sun-dried or unburnt bricks are less durable and used for temporary or cheap structures. ● There are mainly three steps for manufactures are clay, molding, and drying.After the molding process, the bricks are left for dried from direct sunlight. ● The sun-dried bricks are not much strong and also less water and fire resistance. Hence, These should not be used at places exposed to heavy rains. ● It is believed that first-time bricks were used, in the sun-dried form (unburnt Bricks), in Egypt some 6000 years ago.