Using steel and concrete together utilizes the beneficial material properties of both elements. Concrete filled steel tubes represent a good example of a concrete - steel composite structure, and are particularly useful as columns in high rise buildings and bridge piers. They can be used in a range of fields, from civil and industrial construction

Xiao-Ling Zhao is Head of Civil Engineering at Monash University, Australia and Chairman of IIW (International Institute of Welding) Subcommission XV-E on "Tubular Structures".

Lin-Hai Han is Professor of Structural Engineering at Tsinghua University, China. He is Vice-President of the China Society of Fire Protection on Steel Construction and Vice-President of the China Society on Steel-Concrete Composite Construction.

Hui Lu is a bridge engineer at Pitt & Sherry Pty Ltd, Melbourne, Australia and holds a PhD in civil engineering.

1. Introduction 2. Concrete-Filled Tubular Sections 3. Members Subjected to Static Loading at Ambient Temperatures 4. Members Subjected to Fire 5. Members Subjected to Seismic Loading 6. Connections to Concrete-Filled Tubular Columns 7. Recent Developments. Appendix A: Summary of Design Rules. Appendix B: Practical Design Examples