oa Civil Engineering = Siviele Ingenieurswese - The dolos breakwater block
|Article Title||The dolos breakwater block|
|© Publisher:||South African Institution Of Civil Engineering (SAICE)|
|Journal||Civil Engineering = Siviele Ingenieurswese|
|Affiliations||1 Maritime and Hydraulic Structures Programme of the CSIA's Division of Earth, Marine and Atmospheric Science and Technology.|
|Publication Date||Oct 1989|
|Pages||317 - 318|
|Keyword(s)||Concrete blocks, Dolos breakwater armour unit, Dolos breakwater block and East London harbour|
The dolos breakwater armour unit was developed by the late Eric M Merrifield when he was harbour engineer at East London. The need arose when, in 1963. approximately 60 per cent of the 37 t rectangular concrete blocks used to protect the seaward side of the East London breakwater had disappeared and major repair works were called for. It was obvious that repairing the breakwater with similar blocks would be ineffective unless they were made significantly heavier. This would have caused serious construction problems in that the available crane could not handle such blocks.
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