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McDONALD'S CORPORATION OFFICE CAMPUS
CORPORATE HEADQUARTERS OFFICE BUILDING - PHASE 1B

Oak Brook, Illinois

Phase 1B of the McDonald's Corporate Office Building encompasses 284,000 square feet of office space, research and lab facilities, with an additional 300,000 square feet of enclosed below grade parking. The first of three phases, the Phase 1B Office Building will be the focal point of McDonald's Corporate Office Campus and Training Center.

C S Associates' role as the consulting structural engineer was unique in that the corporate and architectural objectives required large bay spacings, minimum structural depth and exposed architectural concrete.

C S Associates' solution to this complex building included office bays measuring 30 feet by 48 feet supported by post-tensioned slabs and beams. The office bays are transferred to the 30-foot square parking bay by means of 60 inch deep post-tensioned girders. Parking levels are supported by two-way post-tensioned flat slabs. The structural system provided meets McDonald's Corporations' objective of maximum flexibility.

Services provided by C S Associates, Inc. included preliminary pricing documents, construction documents and specifications, construction administration and field observation.

Architect: Lohan Associates, Chicago, Illinois
Developer: McDonald’s Corporation