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Difference between revisions of "Cranes"
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[[File:Cranes_1.jpg|thumb|200px|right|Cranes]] | [[File:Cranes_1.jpg|thumb|200px|right|Cranes]] | ||
[[File:Cranes_2.jpg|thumb|200px|right|Crane Parts]] | |||
'''Cranes''' are tower or derrick equipped with cables and pulleys that can be used both to lift and lower materials and to shift them horizontally. Cranes are commonly employed in the construction industry and in manufacturing heavy equipment. | '''Cranes''' are tower or derrick equipped with cables and pulleys that can be used both to lift and lower materials and to shift them horizontally. Cranes are commonly employed in the construction industry and in manufacturing heavy equipment. | ||
Construction cranes are usually temporary structures, either fixed to the ground or mounted on a purpose-built vehicle. | Construction cranes are usually temporary structures, either fixed to the ground or mounted on a purpose-built vehicle. | ||