UBC Undergraduate Research

Stadium Neighborhood Underground Parkade and Water Storage Bhangle, Tanvir; Chen, Peggy; Leung, Gabriel; Phang, Colin; Wong, Brenna; Woodward, Nicole


Stormside Consulting Limited has prepared this report at the request of the University of British Columbia (UBC) as a solution to stormwater management and increasing parking capacities in the Stadium Neighbourhood. The detailed design is a mixed solution including a parkade to suit growing parking needs and a water detention facility to store stormwater runoff and gradually release it back into the stormwater mains to avoid environmental damages. The parkade has been designed under the National Building Code of Canada and Concrete Code to provide sufficient strength to support all stadium attendees and vehicles. The detention tank and drainage network have been designed to effectively store, manage, treat, and release stormwater. Two key objectives of the project are to meet the communities’ new parking demands and to hold the equivalent stormwater runoff from a 1-in-100 year storm. The design solution covers an area 110m by 110m, with a depth of 10m, all underneath the location of the new stadium. The structure is designed with two parking levels with a capacity of 700 parking stalls, including disability parking spaces and electric vehicle charging spaces. The water detention facility beneath the second parking level consists of 3 retention tanks holding a total volume of over 36,300 cubic meters. In addition to the detention tanks a natural dry pond is designed with an area covering 15,000m² at a depth of 1.5m. The design holds water in the detention facility until it is safe to release the treated water back into the city’s sewer network via pumps directing flow to SW Marine Drive. Improving stormwater runoff quality is done through filtration systems with the use of outdoor bio swales. The underground parkade and detention facility have a total project cost of $18,486,000, with implementation planning and construction spanning 7 months beginning February 4th, 2019. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”

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