ABSTRACT
In the design of reinforced concrete floors slabs, deflection and crack control at service load levels are usually the governing considerations and accurate modeling of the stiffness after cracking is required. Various approaches for modeling the post-cracking stiffness in lightly reinforced concrete slabs are evaluated critically and empirical predictions are compared with actual load versus deflection plots for a variety of concrete slabs. Finally, recommendations are included for changes to the Australian Standard AS3600.
