Problem Located on Chicago’s iconic Lake Michigan shore, The Field Museum of Natural History is one of the largest premier natural history museums in the world. The building site for the museum was constructed using poor fill materials including rubble from the Great Chicago Fire of 1871. The low bearing strength of these sub-grade soils caused the structure to settle over time; some areas of the ground floor settled as much as two-thirds of an inch. Adding to the problem, a 6,075 square foot ground floor room called the Pacific Research Room required a specialty repair solution due to additional structural challenges. The room had crawl spaces below concrete slabs with ground water in them from Lake Michigan, as well as heating tunnels and utility lines running the length of t

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