This is a Construction Crane. The Crane is all sectional so you can make it as tall or long as you like.
The counter weight and hoist move so you can balance the load. The bottom sections are interchangeable. The horizontal sections are the same so you can attach the hoist or counter weight on ether end.
The large underground base is just one way to install the crane. It can be installed on the building structure as the building goes up. #Building #Construction #Crane #Hoist #Sectional