每日吃瓜

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 m.

All COMANSA cranes at the Azuri Peninsula 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. ?The work cycles of the COMANSA cranes on site are very short, which increase its productivity, and help us to also shorten work times,? added Kattar.

COMANSA?s PowerLift System, which improves the load diagram of the crane by 10 per cent, 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.