UBC Undergraduate Research

UBC Stormwater Detention : Detention Facility for UBC CCM Everton, Madeleine; Abdulameer, Mariam; Ong, Felita; Vaags, Eric; Langenberg, Nadia; Di Iorio, Christina


This report provides an overview of the project background, the conceptual designs considered, justification of the preferred option and an in depth outline of the final detailed design. In response to the current high risk of flooding to the University of British Columbia (UBC) campus and surrounding residential and First Nations areas, the UBC Social Ecological Economic Development Studies (SEEDS) Sustainability Program has retained Team 10 for the design of a non-traditional, multi-use stormwater management system. A public outdoor learning space was chosen for its overall functionality and minimal maintenance and environmental impact to be the preferred design out of three conceptual designs. Included in this document is the technical analysis, including geotechnical, structural and hydrotechnical components,the framework for an environmental assessment and Indigenous engagement, a project management plan, and a review of stakeholder engagement. A geotechnical review of the site slope stability was completed with attention to the instability of the Point Grey Cliffs in order to determine safe limits for site excavation.This was also taken into account for the design of the structure’s four footings. SAP2000 was used for structural analysis of the outdoor learning space’s roof. A hydrological site analysis was conducted using past site evaluations as well as EPA SWMM to obtain a solid understanding of the current conditions and stormwater drainage system. EPA SWMM was used to determine the required water holding capacity in the case of 10 and 100 year storms. An outlet controlled orifice discharge concept was designed to meet the specified maximum discharge rate. Moving forward, a project management plan has been outlined in this report,consisting of construction phasing, and scheduling, a cost estimate and methodology as well as methods of stakeholder engagement. 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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