Striking a balance between the speed of steel construction and the stiffness of concrete design is an innovative system of concrete columns interconnected with a three-dimensional steel Vierendeel Truss over the height of the building. This unique system facilitates the aggressive 7:1 height to width ratio and the unobstructed views from 100% of the perimeter offices. The relatively light steel members allowed the erection of the frame to advance rapidly ahead of the massive concrete columns.
Canadian Structural Engineering Conference
Building Design Journal Mar
Engineering News Record Jun