Steel Buildings in Europe

Part 4: Detailed Design 4 – 36 Worked examples are provided in Appendix A to demonstrate the detailed design of a secondary and primary composite beam. Shear connection resistance In the foregoing verifications of the resistance of composite beams, it should be noted that shear connection resistance is a function of:  The proportions of the deck through which the stud is welded.  The position of the stud(s) with the troughs of the deck  The number of studs within a single trough. Deck manufacturers’ literature should be consulted to determine appropriate design values. Appendix A to this publication presents:  WE3 Simply supported secondary composite beam (with partial shear connection)  WE4 Simply supported primary composite beam Use of design aids and design software With the number of variables to be considered in composite beams, it is not practical to provide any form of tabular design aid. However, a software specification for a composite beam program has been prepared as a separate part of this publication. Composite beam software is already available in some major European Markets. In addition, there are two interactive worked examples on the Access Steel web site [4] that address simply supported secondary and primary beams. Users may input their own variables to carry out a worked example to their specification. 5.2.4 Integrated floor beams Integrated floor beams, which are principally encased within the depth of the floor slabs, are manufactured by several suppliers. They are all supported by manufacturers’ design data and some are supported by specialist software. Manufacturers’ design data or software should be used in practice. 5.2.5 Cellular beams Cellular beams are a specialist form of downstand beam where large openings in the beam webs enable services to share the same depth as the structure within the floor zone. There are several manufacturers of such products, who have all developed specialist design approaches for ‘cold’ design and some have extended their approaches to encompass the fire limit state. All such software complies with the Eurocodes.