Georgetown University, Yates Field House, Washington, DC - was erected in 1978. This large field house is constructed of reinforced concrete with a football field on the roof. This structural design solution led to the rooftop design for the Olney-Margolies structure at Brown. There are 8 racquet courts, a dance/wrestling room with a maple/birch sprung floor, 12 basketball courts and 1/8 mile 4 lane jogging track. The roof surface has an 8 lane 400 meter track surrounding the synthetic football field. The Yates center has a gross area of 149,306 sq.ft. with spans of 130' x 325'. Finishes in the building are minimal, with exposed mechanical systems.