Construction World April 2019
A magnificent bridge over the Okavango River in the Mohembo Village area which is being piled by Keller’s Franki Africa for main contractor Itinera/Cimolai JV, is a shining example of Franki’s diverse strengths. Construction World focuses on Franki’s renowned ability to deliver in remote and challenging environments.
The bridge, which connects villages on the east of the river with the rest of the country, straddles the Mohembo East (Kauxwi) Ferry landing site with the Mohembo West (Shakawe) Ferry landing site.
Leonardo rises high
While concrete is the natural choice of primary construction material for high-rise buildings, meeting the demands of Africa’s highest building has called for some innovative concrete engineering.
“The key challenges on the project was the vertical concrete pumping height of more than 225 metres. To overcome this challenge, as well as to avoid any blockages in the pipeline which was over 200 metres long, a super-plasticised concrete mix with a slump of 180 mm was used.”
This is according to Francois Pienaar, Aveng Grinaker-LTA Contracts Director responsible for the multi-billion-rand Leonardo mixed-use tower being constructed in Sandton for 75 on Maude, which is a partnership between Legacy and Nedbank.
The structure will rise 55 floors above its four-level basement when completed during 2019 and construction materials leader AfriSam was among the specialist subcontractors chosen to supply this landmark project