Riggs Engineering - Civil Engineering - Marine Specialists

Our Projects

Floating Wharf Breakwater

Town of Penetanguishene

Floating Wharf Breakwater


Riggs Engineering was engaged by Harbour West Marina Inc. to provide a design for a T-shaped floating dock replacement.  The design components included:


  • Extensive finite element analysis of the floating dock, floating breakwater and aluminum gangway. 
  • The dead and live load forces and reactions, including structural steel and timber superstructure, were modelled to determine various design conditions.
  • The T-dock floats’ design consisted of quadruple and single steel pipe flotation units which were modelled as shell elements. Typically each float module is 17.5 m long by 7.3 m wide. 
  • The floating breakwater design is generally a typical float module attached with a wave attenuator to provide protection/shelter to recreational vessels.
  • The 15 m long by 2.4 m wide gangway leading to the floats was designed with aluminum and timber decking to minimize loads on floating docks.
  • The T-shaped floating dock is primarily designed for high berthage capacity for public use or gatherings/festivals.