UBC Undergraduate Research

UBC Secure Potable Water Supply System Fu, Yudong (Sony); Jay, Brennan; Jenks, Bradley; Mann, Viraj; Morden, Jason; Poonian, Karm; Tingley, Brian


Team 9 & Associates has been retained by the University of British Columbia's Social Ecological Economic Development Studies to create issue for construction drawings and detail specification to perform the construction of a secure water supply system for UBC and the surrounding community. The intent of this document is to provide an overview of the detailed design being undertaken for UBC’s secure water supply – specifically the design of the underground tank and distribution system, an updated Class B ‘Substantive’ cost estimate, detailed construction schedule and a service life and maintenance plan. This will extend the previous findings and recommendations from the summary report issued by Team 9 on March 2, 2018. This report outlines the design inputs, methods, models, and outputs that have been used by Team 9 in the process of producing a final design. A summary of design recommendations are as follows: (1) Underground Storage Reservoir: Geotechnical Considerations – floating foundation design Structural Design Elements – loading conditions: (a) empty tank condition, (b) standing waves. Envelope – Concrete mix as per ACI standards, waterproofing from Kryton International (2) Distribution System: Pipe Design – 450 mm dia. class 50 ductile iron main with 1.0 m cover, minimum Pump Requirements – 5 vertical in-line centrifugal pumps in parallel (3) Construction Schedule: Schedule – 30 days for watermain and 147 days for storage tank (4) Class B ‘Substantive’ Cost Estimate: Life cycle cost – total life cycle cost (capital and O&M) over 50 years is estimated at $7.25 million. 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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