BEHAVIOUR OF FLAT SLAB/EDGE COLUMN JOINTS

Scaled models have been used in an experimental investigation of the punching capacity and moment transfer characteristics of typical flat slab edge column connections. One of the main aims was to examine the influence of, and attempt to relate, the location of the slab free edge to the column punching capacity. The punching loads of the various joints were found to be in excess of those predicted by both C.P. 110 and A.C.I. 318-77. In addition, the tests showed that the moments transferred from the slab to the columns could be closely predicted by the A.C.I. method of analysis whilst C.P. 110 overestimated these moments by between 25 and 50 per cent.