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Crane

By Sydney Vititoe and Spencer Wilson. Crane. The Purpose of the Crane. The crane is used to lift workloads. The Original Inventor of the Crane. The crane was invented in the late 6 th century by ancient Greeks. Innovations of the Crane.

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Crane

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  1. By Sydney Vititoe and Spencer Wilson Crane

  2. The Purpose of the Crane • The crane is used to lift workloads

  3. The Original Inventor of the Crane • The crane was invented in the late 6th century by ancient Greeks

  4. Innovations of the Crane • It used to be made of wood and rope, and now it is made of metal and steel cords.

  5. Positive Impact on Society • It made it easier to lift heavy things to build buildings and other structures

  6. Negative Impact on Society • It has made less jobs for people because not as many people are needed to build buildings

  7. Types of Cranes • Mobile Cranes • Telescopic Cranes • Tower Cranes • Truck Mounted Cranes • Rough Terrain Crane • Loader Crane • Overhead Crane

  8. Why is the Crane Important • The crane is important because it allows us to build bigger buildings and offices. • It can also lift crates off of cargo ships

  9. Other People who Used the Crane • Egyptians • Greeks • Romans

  10. Parts of a Crane • Base • Mast(tower) • Slewing Unit (allows crane to rotate) • Jib(Working arm, carries the load) • Machinery Arm • Operators Cab • Motor

  11. How Much Weight Can They Lift? • Maximum unsupported height: 265 feet • Maximum reach: 230 feet • Maximum lifting power: 19.8 tons • Maximum load: 18 tons

  12. Bibliography • http://science.howstuffworks.com/transport/engines-equipment/tower-crane2.htm • http://www.ask.com/?o=0&l=dir • http://www.google.com/ • http://www.engineeringcivil.com/various-types-of-cranes.html

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