The General Office Building utilizes spread footings in combination with exterior strip footings, which support basement walls. The spread footings beneath individual columns range from 2 ft. to 3 ft. thick. Along the northern and western edges grade beams connect the interior foundations to the exterior strip footing. The perimeter strip footing’s 2 ft. 3 ft. thickness supports a 2 ft. thick foundation wall. To resist overturning in the two shear wall cores 4 ft. thick mat foundations stretch out to connect with column foundations.
An expansion joint in the connecting walkway separates the two portions of this office building; the auditorium is to the west and the main building is to the east. The three-story auditorium is supported by 4 1/2 in. concrete on non-composite metal deck, w-shape beams and round HSS posts. To create the complicated curved slab edges of the main building portion a concrete two-way flat slab was chosen. A majority of the building utilizes 8 in. slabs. Larger congregation areas have increased thickness of 12 in., and mechanical rooms have even larger 16 in. slabs. Drop panels provide the required punching shear and negative moment capacities at all floors. Each floor is supported by both rectangular and circular concrete columns.