ABSTRACT
Since the first comprehensive treatment of fire engineering of steel structures by Pettersson etal. (1976), tremendous progress has been achieved in the last 30 years or so in developing appropriate design methods for steel structures in fire. The objective of Chapters 8 and 9 is to describe how design calculations may be carried out for steel and composite steel-concrete structures. These two chapters aim to furnish the reader with an understanding of how different design methods reflect the behaviour of steel structures in fire so that the reader can develop an appreciation of the applicability and limits of these design methods. Structural behaviour in fire is a complex issue and new understandings are continuously being obtained. Wherever appropriate, these two chapters will indicate how existing design methods may be improved or new design methods may be developed to take advantage of these new advances.
