Experimental, analytical, numerical and design-oriented research is performed on steel structures - for entire buildings, subassemblies, connections/joints and fasteners (bolts, welds and nails). The behavior and properties of structural steel and cast iron materials are also studied. The loading conditions that are considered include quasi-static, fatigue, impact and seismic. Current research emphasis is placed on Structural Stability, Welded and Bolted Connections, Earthquake Engineering and Tubular Structures. The cutting edge research carried out in the Department of Civil Engineering at the University of Toronto on steel structures has had major impacts on Canadian, American and international Design Specifications and practice. The proximity of our department to large construction projects in the downtown Toronto area also allows us to interact with practicing engineers on a multitude of challenging projects.