Basis for the design of lateral reinforcement for high-strength concrete columns

This paper attempts to provide a theoretical basis for the design of high-s trength concrete columns in terms of the spacing of lateral reinforcement. In order to achieve this, important concepts had to be addressed such as th e choice of a measure of ductile behaviour and a realistic high-strength co ncrete stress-strain model, as well as limiting factors such as longitudina l steel buckling and lateral steel fracture. A design method incorporating above factors are suggested in the paper. It is shown that both buckling of longitudinal steel and hoop fracture will not demand a reduction in spacin g of lateral ties with increase in compressive strength of concrete.