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Very nice. Seems a bit finicky with all the cranes though, but what do I know. If the cost of concrete is a problem, why not put a huge sheet-like structure below a landfill and very slowly rise it up or down ... same principle, but now you're just moving waste and there's no shortage of that!

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The difference is that tower cranes capable of carrying 35 tonne blocks can be bought off the shelf.

As for lifting an entire landfill, how the hell would you accomplish that? No such machine exists, and the support columns required to do so would be utterly massive.

Also, I don't think a strong enough material exists to make that sheet out of.

Having an even number of opposing cranes might save tad of energy by hoisting the hooks and cable up by counterweight than by motor, but speed seems a more likely reason.

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