SOLUTION

During the renovation project, WJE worked with the architect of record, the general contractor, and representatives of the building to coordinate the structural work required to achieve the aesthetic vision for the renovations while also working within the constraints of the existing historic structural framing.

WJE performed a field investigation to document the existing framing, including metallurgical testing of the historical steel. WJE performed a structural analysis of the existing floor framing, designed the structural support for the stair opening, and designed the feature stair structure and connections to the existing framing. Metallurgical testing and compositional analysis of the historical steel revealed the potential for lamellar tearing during welding to the existing steel, which WJE addressed with specific connection designs.

In order to create the floor opening for the stair, over four bays of existing floor framing were removed, which required reinforcing two columns. The new feature stair framing included framing for the stair treads and bleacher seats and custom glass infill guardrails along the stair treads and at the edge of the floor opening.