FOUNDATION SOLUTIONS FOR LIGHT AND HEAVY CONSTRUCTION ON EXPANSIVE SOILS: CASE STUDIES

Amir Poshnejad

In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference

Session: Problematic Soils and Ground Improvement I / Sols problématiques et amélioration du comportement I

ABSTRACT: 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.

RÉSUMÉ: Dans cet aret de construction impliqués dans les sols gonflants. Le premier bâtiment est un hôpital de Winnipeg, au Manitoba, qui est un édifice de six étages avec un grand espacement de colonne de 9 m. Le deuxième bâtiment est une construction agricole à Vancouver, en Colombie-Britannique. Ce bâtiment est de type léger. Les deux bâtiments sont fondés sur un sol expansif. Différentes solutions de fondation sont étudiées pour ces deux cas. Les solutions sont conçues sur la base du rapport géotechnique disponible. Les différences géotechniques des deux sols gonflants sont également soulignées. La faisabilité des solutions est ensuite étudiée en se basant sur des paramètres tels que la constructibilité, les coûts et

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