Apps (iPhone, iPad & iPod):
Science - Fiji Shark Project
great white shark
Scientific shark articles
Alaska & Wildlife
Egypt - Land of the Nile
Fauna & Flora Fiji
Alexandria Harbour, Egypt
Conakry Harbour, Guinea
San Pedro Harbour, Ivory Coast
Shueiba Harbour, Kuwait
Karachi Harbour, Pakistan
Dammam Harbour, Saudi Arabia
Richardsbay Harbour, South Africa
Penguins & seals
Southern Right Whale
Wildlife South Africa
In the foreground on the left, the rondavels are still visible. They were once designed for anglers who came to fish in the unspoiled nature. (00092047)
||Richards Bay Harbour/Natal/South Africa
North Breakwater production location for dolosse
The production locations for the production and storage of the 48500 dolosse lay directly behind the north breakwater (likewise behind the south breakwater). The dolosse were concreted along a ramp. The concrete transport mixer drove along the ramp and brought the concrete via a delivery chute directly into the dolosse steel formwork. After stripping the formwork the dolosse were transported off with a gantry crane and stored at first singly. After fully hardening they were put into interim storage until being mounted on the breakwater. In order to accommodate as many dolosse as possible in the storage area, four dolosse were stacked on top of each other. Dolosse are a South African invention, a type of double hook out of unreinforced concrete. Both hooks are twisted at 90 degrees against each other. Once placed, they jam into one another and thus resist displacement by the waves. At north breakwater 5 t and 15 t dolosse were used. At south breakwater (greater water depth) 20 t and 30 t dolosse were used additionally.
© Klaus Jost - wildlife- & nature- & underwater
All texts and pictures present at this website, are protected by international copyright laws.
Each kind of the duplication, which is manipulating or storage of pictures without the written permission of Klaus Jost is expressly forbidden.