Zeebrugge Harbour Breakwater with Quay

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Zeebrugge Harbour Breakwater with Quay

1911

Zeebrugge Harbour Breakwater with Quay

Foundation blocks of 2500 to 3000 tons have been deposited for raising the walls on each side of the wide portion of the Zeebrugge breakwater from the sea-bottom to above low water, and also 4400-ton blocks along the narrow outer portion, by building iron caissons, open at the top, in the dry bed of the Bruges ship-canal, lining them with concrete, and after the canal was filled with water, floating them out one by one in calm weather, sinking them in position by admitting water, and then filling them with concrete under water from closed skips which open at the bottom directly they begin to be raised. The firm sea-bed is levelled by small rubble for receiving the large blocks, whose outer toe is protected from undermining by a layer of big blocks of stone extending out for a width of 50 ft.; and then the breakwater walls are raised above high water by 55-ton concrete blocks, set in cement at low tide; and the upper portions are completed by concrete-in-mass within framing.
Source: 1911 EB, Vol. 4, Page 481

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