Abstract:
Limited design procedures are available for evaluating and repairing drilled shafts where insufficient clear cover over vertical reinforcement has reduced flexure capacity. Case history presents the design approach used to evaluate post installed structural capacity of over a dozen drilled shafts, each 7 to 9 feet in diameter, installed for a 1-mile long transmission line in the Great Lakes region where thermal integrity profiling and installation record identified insufficient rebar cover. Additionally, the design approach and procedures for post-installing #24 steel reinforcing bars into four drilled shafts where additional reinforcement was required to meet flexural capacity are presented.Â