Jaroslaw, that's exactly what I keep asking myself. Those vertical cranes are usually used for foundations. So why are they back ?
Is it because of the new building height (still a Mori Co. secret) they have to do some additional work ?
Fabb said no :
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The foundations were made for a 460 m tower if I remember correctly. The height added represents 7 percent of the initial plan, but probably less than 7 percent of the weight.
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But Mori Co. now speaks of a higher than 500 m building. Is it still possible without affecting the previous foundations reliability?
A bigger height increases weight, but what about the added wind pressure? Is Shanghai in a typoons zone ?
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