UBC Undergraduate Research

Stadium Neighborhood Underground Parkades and Water Storage Ding, Emily; Ferster, Connor; Jarvis, Taylan; Nhung, Sarah; Rodstrom, Jamie; Schaffer, Evan


The Stadium Neighbourhood is a planned residential development that incorporates a new university sports stadium located in the southwest of UBC campus. Thunderfish Consulting Ltd. was asked to design a stormwater management system and underground parkade for the new development. UBC Properties Trust requires that the stormwater system prevents overland flooding and maintains, or reduces, the flow demand on the outfall pipe located to the SW of the catchment area. The flow demand is based on the existing, pre-development rate, which is currently sufficient to prevent erosion at the outfall. The selected design proposes to divide the site into three zones: • Zone 1 is the new stadium: the stadium collects its own rain water on its blue roof and stores the run-off in a concrete tank structurally built-in to the top-level of the stadium. The water is re-used as non-potable flushing water within the stadium. • Zone 2 is the athletic field which collects water, detains it underground, and releases it slowly through bioswales where the filtered run-off is further detained in a dry pond. • Zone 3 covers the residential buildings and roadways: water is collected in each building in green roofs, ground-infiltrated through permeable paving, or collected off of impermeable surfaces and directed into underground storage tanks. All stored water is then released through a controlled release port to the outfall. In addition to being designed with sustainable development principles, the system releases water into the downstream stormwater system at approximately 35 L/s, an increase of 4 L/s from the estimated pre-development rate of 31 L/s. The proposed design is expected to be constructible within 8 months at a final cost estimate of $12.5 million dollars. 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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