Free spanning ductile vierendeel frame: A system for high-rise buildings in seismic areas

The paper has described the composition and structural behavior of a free spanning ductile frame system to be used in seismic areas. The inelastic performance, ductility, and redundancy of the system is compared with a conventional ductile moment resisting frame. It is shown that the structural performance of the system is equal or better than the conventional system. The paper also describes successful application of the system to commercial high-rise buildings.