Wilshire Grand Center in Los Angeles.
Wilshire Grand Center has redefined the Los Angeles skyline. Located on the site of the recently demolished Wilshire Grand Hotel, the tower is the tallest building in the Western United States. Reaching 73 stories and topped by an LED-illuminated, sail-shaped architectural feature, Wilshire Grand houses a fourstar hotel on the upper floors and Class-A offices on the lower floors. A five-story podium includes retail and dining options and the building offers five levels of subterranean parking. An upscale rooftop “sky lobby” provides guests with sweeping views of Los Angeles that extend to Santa Monica.
Thornton Tomasetti provided structural engineering and performance-based design services to engineer-of-record Brandow & Johnston. The tower’s superstructure lateral system consists of a nearly rectangular four-cell cast-in-place reinforced concrete shear wall system. The gravity system consists of concrete-filled metal deck floor slabs supported by composite steel wide-flange framing. Thornton Tomasetti applied performance-based design principles to validate the tower’s seismic performance and successfully presented the design to the Building Department’s Peer Review Panel.
Thornton Tomasetti also established a parametric façade panelization strategy for the geometrically complex, all-glass façade. Contracted by AC Martin Partners, Thornton Tomasetti synchronized slab and façade geometry between the architect’s Rhino and Revit models and used the combined data to generate two Revit models; one for the architect’s documentation of the façade panelization and the other with information needed for the façade consultant.
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