Tower cranes are a common fixture at any major construction site. 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 steel, concrete, large tools like acetylene torches and generators, and a wide variety of...
science.howstuffworks.com/tower-crane.htm science.howstuffworks.com/tower-crane.htm
Liebherr construction cranes at the open-air opera venue in Bregenz ... ; Mobile construction cranes ... Used construction cranes/ components...
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Crane (machine) - Wikipedia, the free encyclopedia
A crane is a lifting machine, generally equipped with a winder (also called a wire rope drum), wire ropes or chains and sheaves, that can be used both to lift and lower materials and to move them ho...
en.wikipedia.org/wiki/Crane_(machine)
Three cranes found unsafe, shut down; The state has shut down three construction tower cranes -- two in Seattle and one in Renton -- because of safety concerns, the state Department of Labor & Industries said Thursday.
www.seattlepi.com/specials/crane/ www.seattlepi.com/specials/crane/
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I’ve traveled to many cities the past 12 months for work and play, and if there was one sight viewed virtually every place I went it was the high-rise construction crane. ... Even in mega-sprawl Phoenix, cranes are in high demand commanding rents of $25,000 to $65,000 per day, according to the Arizona Republic.
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Pointing to the unprecedented cluster of cranes on the Las Vegas Strip, the spate of recent deaths in construction accidents and deadly crane collapses elsewhere in the country, the state AFL-CIO plans to ask the 2009 Legislature to change crane safety laws, the organization told the Las Vegas Sun.
www.lasvegassun.com/r/72/617327/
At one time, highway and heavy construction contractors would almost exclusively use towers and crawlers for job-site lifts. Now they are increasingly turning to overhead cranes for bridge, subway, and tunnel construction and repair. ... Bridge/Highway Construction Cranes...
www.naicranes.com/industries/construction.htm www.naicranes.com/industries/construction.htm