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FOUNDATION SOLUTIONS FOR LIGHT AND HEAVY CONSTRUCTION ON EXPANSIVE SOILS: CASE STUDIES Session: Problematic Soils and Ground Improvement I / Sols problématiques et amélioration du comportement I Amir Poshnejad, EllisDon (Canada) In this paper, two building projects of EllisDon Corporation are studied to compare the design and construction challenges involved in expansive soils. The first building is a hospital in Winnipeg, Manitoba which is a six-storey building with a large column spacing of 9-m. The second building is an agricultural building in Vancouver, BC. This building is a lightweight building. Both of the buildings are founded on expansive soil. Different foundation solutions are studied for both cases. The solutions are designed based on the available geotechnical report. The geotechnical differences of the two expansive soils are also highlighted. The feasibility of the solutions is then investigated based on parameters like constructability, cost, and schedule. Final recommendations are provided for the foundation type for each project.
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