A new configuration of transverse reinforcement with alternate
ties was proposed recently (Mo and Hwang 1999) to optimize
the fabrication process of reinforcement cages. It was
found from Mo and Hwang (1999) that the lap splice length
of the alternate ties is sufficient when the compression lap
splice requirement according to the 1995 ACI code is satisfied.
In this test series, nine RC columns with a cross section of
400 3 400 mm were tested to investigate the effect of the
configuration of transverse reinforcement on the seismic behavior
of RC columns. The effect of axial force on such columns
also is studied.