Crane Lowering a Heart
A tall construction rig with a lattice tower uses its hoist to lower a massive heart shape.
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Construction Crane Lowering a Heart
A tall tower crane with an open lattice structure and a horizontal jib lowers a large heart suspended from a cable hook.
How Tower Cranes Operate on Building Sites
Tower cranes are assembled piece by piece on heavy concrete bases to ensure stability during lifting operations. Operators control the hoist and trolley from a cab located near the top of the vertical tower. Counterweights mounted on the rear arm balance the heavy loads carried at the front of the crane.
Real-World Colors of Cranes and Machinery
- Steel crane lattice: bright yellow, orange, or safety red
- Lifting cables and hook: dark gray or black steel
- Pulley wheels: metallic silver or charcoal gray
- Operator cab windows: clear glass with blue tint