c) Engineering structures are required to support loads and resist forces, and to transfer these loads and forces to the foundations of the structures. The loads and forces may arise from the masses of the structure, or from man's use of the structures, or from the forces of nature. Discuss the advantages of steel structures. EV (7) d) Many of the best architectural wonders have been constructed through the use of steel, be it structural, carbon or rebar, including The Empire State Building and the Sydney Harbour Bridge. Steel structures can be classified into various forms. Name five (5) of them. CR (5)