ABSTRACT
M. Dundu University of Johannesburg, Johannesburg, South Africa
ABSTRACT: Twelve square concrete-filled steel tubes (CFSTs) of three different section sizes are subjected to axial compression. The lengths of each section size tested are 1.0 m, 1.5 m, 2.0 m and 2.5 m. These lengths provide a range of columns, from relatively short to slender composite columns. The compressive resistance of the composite columns are compared with the design strengths predicted by the South African standard (SANS 10162-1), as well as the European design standard (Eurocode 4). The test results of the slender members are found to be at variance with the codes.
