ABSTRACT
The specific aim of structural design is, for a given framing arrangement, to determine the member sizes to support the structure’s loads. The historical basis of design was trial and error. Then with development of mathematics and science the design theories-elastic, plastic and limit state-were developed, which permit accurate and economic designs to be made. The design theories are discussed; design methods given in BS 5950: Part 1 are set out briefly. Reference is also made to Eurocode 3 (EC3). The complete codes should be consulted.
