College - Author 1
College of Architecture and Environmental Design
Department - Author 1
Construction Management Department
Degree Name - Author 1
BS in Construction Management
Date
3-2025
Primary Advisor/Subject Matter Expert (SME)
Phil Barlow, College of Architecture and Environmental Design, Construction Management Department
Abstract/Summary
This case study investigates the process of drilled displacement columns as a substitute for traditional pile foundations. The setting for the project is in California's infamous 'bay mud' which poses in the form of building settlement. The case study begins with a run down of what drilled displacement columns are compared to traditional pile foundations. To gain a diverse perspective several parties were interviewed on the process of drilled displacement columns. The interviewees include members of the general contractor's team, the subcontractor, and the Owner's Representative. The universal positives were time and materials which result in reducing the price for foundations. The case study also explores challenges associated with the drilled displacement column process on this project but are not always present with drilled displacement columns. Ultimately, the case study justifies the use of drilled displacement columns to support substructures. Lastly, future research is proposed to validate the effectiveness of drilled displacement columns over time. Saving money and time are key elements on any project but the value of those returns can only be understood over time as the building performs and responds to its environment. Taking measurements of future settlement can further support the conclusions made from the research.
URL: https://digitalcommons.calpoly.edu/cmsp/844
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