Port of Wilmington Expansion
Over the course of 30 years, Monotube piles have been the pile of choice on five major projects at the Port of Wilmington in Delaware.
In 1959, engineers conducted a test pile program that would define options available to support new wharf construction at the port. It’s important to note that maritime application of piles dictates very significant performance challenges. A primary consideration: piles were required to have unsupported lengths approaching 35 feet above the mud line while carrying design loads in excess of 100 tons. The tests showed Monotubes excelled in this application. Their high structural strength adapted them well to the numerous design considerations and their attractive fluted shape would add visual esthetics when completed.
Most importantly, Monotube’s unique tapered design creates a dramatic friction-increasing wedge action in the bearing strata resulting in shorter, more uniform driven lengths to meet design loads. This translates into faster installations with predictable completion dates and big savings.
Over a quarter million lineal feet of Monotube piles have been driven at the port site. Featured here is the West Dock Expansion – Phase 2. Over 500 18-in. diameter Monotubes were driven to average tip elevations of 80-ft. below water line with design loads of 110 tons per pile.