Finally, we can find larger floating cranes, generally used to build oil rigs and salvage sunken ships.
Some lifting machines do not strictly fit the above definition of a crane, but are generally known as cranes, such as stacker cranes and loader cranes.
These cranes were used for the construction of tall buildings.
Larger cranes were later developed, employing the use of human treadwheels, permitting the lifting of heavier weights.
In contrast to the archaic period with its tendency to ever-increasing block sizes, Greek temples of the classical age like the Parthenon invariably featured stone blocks weighing less than 15-20 metric tons.
Also, the practice of erecting large monolithic columns was practically abandoned in favour of using several column drums.
Sizes range from the smallest jib cranes, used inside workshops, to the tallest tower cranes, used for constructing high buildings.