The tallest tower cranes can lift things higher than a 20-storey building.
They reach hundreds of metres up into the sky. That is how workers build super-tall towers, floor by floor.
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Excavators use a big metal arm and bucket to dig holes in the ground.
Dump trucks carry heavy loads of dirt and tip them out the back.
Bulldozers push piles of dirt with a big flat blade at the front.
Cranes lift heavy things high up to help build tall buildings.
Cement mixer trucks spin around to keep the wet concrete soft.