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Design / Build Services
Broward County, Florida

Coastal Systems provided engineering services for the design/build construction of 10 acres of artificial reefs offshore of Dania and Hollywood beaches in Broward County. The mitigation was required for hard-bottom impacts from the Broward County, Floridaplanned Segment III (south of Port Everglades) beach restoration. The project consisted of placing 66,000 tons of limerock boulders utilizing a crane barge outfitted with precise positioning equipment. The boulders were transported using barges from quarries in Freeport on Grand Bahama Island. The crane barge was anchored in 15 - 20 feet of water approximately 500' off of the beach.

Coastal Systems provided an engineered approach to the construction with the following services:

  • Coastal engineering wave statistical analysis to
    determine optimum construction schedule for favorable weather conditions
  • Marine resource surveys to map hard-bottom limits
    utilizing towed underwater video
  • Preparation of construction plans with reef mapping
    data and LADS data to modify environmental permits and use during construction operations.
  • Mooring analysis design for temporary single-point mooring of supply barges
  • Design/layout of pile anchor system for crane barge with supply barge in nearshore zone, adjacent to reefs
  • Specification of high strength floating line for 4-point mooring of crane barge
  • Design of barge loading ramps at quarry site
  • Crane and barge marine positioning using DGPS
  • Vessel tracking system
  • Site engineering support
  • Web-based project management
  • As-built hydrographic surveys
  • Construction management and automated quality control
Construction was completed between May and September of 2003, on schedule.

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