a. In construction industry aluminum and wrought iron can be used for truss and rafters depending on the purpose of the building. Construct between Aluminum and wrought iron (AP10 marks) b. Brick is one of the materials use for construction of dams, bridges and walls. Express the term bricks in construction and discriminate types of bricks? (AN8 marks) c. On construction site some of the columns and beams are made with steel. Compare among mild steel and high carbon steel. (EV7 marks)