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ITB Nigeria is using 6 COMANSA cranes for the construction of the Azuri Peninsula apartments, developed by Eko Development Company in Lagos
Azuri Peninsula is being built at the Marina District, one of the new 10 districts of this city and the one that will concentrate most of its leisure opportunities. There are six COMANSA cranes working in this project all which belong to the fleet of the turnkey contractor ITB Nigeria FZE.
The machines, all with flat-top design and maximum load capacity of 18 and 20 tonnes, are taking on the construction of the three towers that form the complex, of more than 140 metres in height and up to 32 floors.
Among the six cranes, two are model 21LC550, one is a 21LC335 model and the remaining three are 21LC290 model. All of them were erected initially with low heights, but the team from ITB Nigeria used the hydraulic jacking cages in different occasions to jack-up the machines as the buildings were growing taller. The cranes are now working at their maximum height, reaching the tallest up to 163.5 metres.
All COMANSA cranes at the project were equipped with the Effi-Plus system, which increases significantly the hoisting speeds with light loads. “Due to the height of the buildings, it has been essential to rely on cranes with high hoist speeds,” said Paul Kattar, tower crane manager at ITB Nigeria.
COMANSA’s PowerLift System, which improves the load diagram of the crane by 10%, was significantly used as well. According to Kattar, “The podium of the building is formed mainly by precast elements from 6 to 8 tonnes and concrete beams of different sizes with maximum weights up to 13 tonnes. For its construction, the PowerLift System had to assist us many times in certain operations in which we required a 10 per cent extra capacity.”
The cranes are working 24 hours a day, lifting steel structures during the daytime and helping with the concrete works during the night. Many weekends, the tower crane team had to move and fix the collars and jack the cranes up to leave them ready before Monday morning.