The Development of a Design for a Breakwater at Keflavik, Iceland

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by W. F. Baird, W.F. Baird & Associates Coastal, Engineers Ltd, Canada,
K. Woodrow, W.F. Baird & Associates Coastal, Engineers Ltd, Canada,

Document Type: Proceeding Paper

Part of: Berm Breakwaters: Unconventional Rubble-Mound Breakwaters

Abstract: A breakwater design was developed to be built using local quarried rock and relatively simple construction methods. The design significant wave height was 5.8 and the maximum depth of water was 24 m. The final design consists of a wide layer of 1.7 to 7 ton armor stones in place of a traditional two layers of armor stones. At this location a traditional design would have required two layers of 30 to 40 ton stones. The core of the breakwater contains the remainder of the quarry yield, that is, stone weighing less than 1.7 tons. By varying the geometry of a breakwater cross-section a design can be prepared that makes full use of the yield of a quarry and may use armor stones weighing five times less than the stones required for a conventional design. At this location this design approach achieved cost savings.

Subject Headings: Breakwaters | Stones | Armor units | Hydraulic models | Model tests | Hydraulic design | Rocks | Iceland | Europe

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