Overhead Transmission Line

West Springfield, MA

Market: Other

Completion

2012

Concrete drilled shaft foundations, for two electrical utility projects, each support a single steel monopole tower structure for new overhead electrical transmission and generation lines.  Surface defects in the concrete were discovered near the top of three drilled shafts.  Working for the contractor, SGH investigated the extent of the defects, evaluated the structural adequacy of the drilled shafts, designed temporary excavation support systems and concrete repairs, observed the repair work, and performed a root-cause analysis of the defects.