dolos |
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| navigate by keyword : african barrior bay block boat boats brown complex concrete construction design dolos engineer geometric habour hole many ocean peir protect protection reinforced rock rocks sea shape south tied tons wave waves weighing |
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| Barriors protecting the sea from the peir. Harbour sea-wall, using a unique South African invention (East London Harbour Engineer) called dolos. Concrete block in a complex geometric shape weighing up to 20 tons |
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