The George Brown Waterfront Health Sciences Campus in Toronto sits on what was once a brownfield site. After soil remediation, water, sewer and gas lines were brought in and the foundation dug. Built upon a landfill and shifting sands with high water tables, the eight-story health care facility is supported by five-foot-thick concrete retaining walls that line the "bathtub" foundation. The building also acts as a lab for construction technology students who want to understand the challenges encountered while building it.

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