Which project team member is primarily responsible for overseeing and detailing a foundation change prompted by groundwater?

• A. Client
• B. Geotechnical Engineer
• C. Architect
• D. Structural Engineer

Answer: (B)

Groundwater-related foundation changes are driven by soil and hydrogeology conditions, which are the domain of the geotechnical engineer. This specialist evaluates how groundwater affects bearing capacity, settlement, and stability, conducts field and laboratory testing, and determines the appropriate corrective measures. They not only propose the modifications—such as underpinning, dewatering, drainage improvements, soil stabilization, or revised pile layouts—but also provide the detailing and specifications needed to implement them. The geotechnical engineer then coordinates with the structural engineer to ensure the changes are structurally sound and properly integrated into the overall design. The client sets the project goals, and the architect focuses on design coordination, but the technical responsibility for overseeing and detailing a foundation change prompted by groundwater rests with the geotechnical engineer.