Safe Harbor Dam
The Safe Harbor Dam is a concrete gravity dam on the lower Susquehanna River with an associated hydroelectric power station.
After the failure of an existing concrete skimmer wall spanning nearly 50 ft., Providence was asked to design a replacement wall. In addition to accounting for design loads such as differential water levels, ice, wind, earthquake, waves and debris, maximum wall thickness and wall weight were factored into the design due to load restrictions during installation. To satisfy all constraints, the final design consisted of (3) 8 ft. tall stackable wall segments of steel channel frames with upstream and downstream plated faces. Connections to support piers on either end were designed to be ‘breakaway’; therefore, if loads in excess of design loads are ever encountered, the connections will fail, but the wall and piers will remain intact and reusable.