Martin Marietta Energy Systems Inc
and R.M. BENNETT
University of Tennessee
The effect of out-of-plane inter-storey drift on the in-plane capacity of unreinforced hollow day block infilled frames was evaluated by testing three large-scale specimens. Two of the specimens were first subjected to cyclic out-of-plane displacements imposed either at the lop or at mid-height of the infill. Little relative movement was observed between the block infill and the bounding frame. Both specimens were then loaded in-plane to failure. The results were compared to a third identical specimen that was only loaded in-plane to failure. In-plane strength and stiffness degradation resulting from the out-of-plane drift loading was minimal.