ABSTRACT
A beam having a span to depth ratio less than about 5 may be classified as a deep beam. Deep beams occur as transfer girders at the lower levels in tall buildings, offshore gravity type structures, foundations and so on (Figures 5.1 and 5.2). The main design recommendations for deep beams have been summarised in Chapter 1. This chapter covers the behaviour of reinforced concrete flanged deep beams. Flanged beams are usually deep and consist of a thin web (Figure 5.3). The application of flanged deep beams normally may not be apparent in ordinary reinforced concrete structures but they are for instance a major structural component in the foundation of offshore gravity type structures and in the horizontal and vertical diaphragms used to transmit wind forces in tall buildings. Little published information is available on the behaviour of reinforced concrete flanged deep beams.
