16-story high-rise tower in Downtown Berkeley

LEED Gold

Located approximately 1/2-mile from Hayward Fault

Complex and congested site in densely-developed urban area

Existing onsite construction and traffic restrictions constrained feasible drilling locations 

50-foot-deep bedrock overlain by variable and compressible alluvial soils 

High-capacity, design-build deep foundation elements (Augercast Piles) 

Subsurface obstructions and undocumented fill from previous onside construction 

Developed a resourceful investigation plan that included targeted borings, extensive site research, and review of subsurface data from nearby sites 

Collaboration with Design Team and specialty foundation contractors to select an appropriate and cost-effective deep foundation support solution 

Economical and time-saving dynamic testing program of production piles to confirm design capacities 

Expedient onsite evaluations and consultation to address subsurface obstructions and near-surface undocumented fill