Unconventional Rubble-Mound Breakwaters—Concerns

by C. D. Anglin, Queen's Univ, Canada,
K. B. Dean, Queen's Univ, Canada,
D. H. Willis, Queen's Univ, Canada,

Document Type: Proceeding Paper

Part of: Berm Breakwaters: Unconventional Rubble-Mound Breakwaters


A Seminar on Unconventional Rubble-Mound Breakwaters was held in Ottawa, Canada, on the 15th and 16th of September 1987. This paper is an attempt to summarize the general discussion that was the final item on the program. An unconventional rubble-mound breakwater is one in which the armor is quarried stone placed in any way other than the conventional two layers to protect against wave action. The following factors were discussed: design procedures; long-term stability; porosity and permeability; profile development; oblique wave attack and roundheads; scour; model testing; consolidation; stone durability; and construction. Recommendations were made concerning: field measurements; modeling of flow within the breakwater; the design and construction team; design storms; and improvements to conventional rubble-mound breakwater design.

Subject Headings: Construction management | Flow measurement | Hydraulic models | Rocks | Breakwaters | Armor units | Wave action | Porosity

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