Cranes combine simple machines to lift extremely heavy objects. In balance-style cranes, the crane's beam is balanced at a point, called the fulcrum. This
They're pretty hard to miss -- they often rise hundreds of feet into the air, and can reach out just as far. The construction crew uses the tower crane to lift
Growing the crane from the base up is a complicated procedure which uses a “climber.” In essence, the climber lifts the topmost part of the crane with the jib,
