Test results on nine full-scale slender column specimens are'presented. The columns
were subject to eccentric static loading applied at an initial eccentricity of one-third the
overall column depth. The method of load application had induced the specimens to
perform in a biaxial response. The column parameters investigated include the strength
of the concrete, slenderness ratio of the column, and volumetric ratio of the lateral
reinforcement. The investigation indicted that the loadcarrying capacity of test columns
was enhanced as the concrete strength increases. The extent of the enhancement was
dependent on the slenderness ratio. The column ductility was substantially improved as
the lateral reinforcement condenses in particular for columns with low-strength
concrete. Test results were compared with the predictions following the ECCS-203
provisions on strength analysis of slender columns. The ultimate load predictions were
in general conservative.