In 1889 France hosted the festival of world trade big spectacular. Great until they have bigger again. But the city Chicago decided to challenge.In 1893 city Chicago's cue to event planning and structure, faster than before. The organizers wanted to show to the world that the city Chicago ability as well as to create art marvellous in the world and we have the technology of France, magicWith the workpiece in Paris, at the center of the tower made of steel with a base กว้างและ and luxury to views of the city Paris.This project is an architect named Architect Daniel H. Burnham is responsible for all tasks in the project of the city Chicago he received an offer from city engineers proposed building another tower in many forms. One day Burnham received a proposal that it unbelievable and a flange construction than other strange and outrageous than previous proposals that were sent from you. George Washington Gale Ferris Jr.Ferris proposal to build a large wheel, where people can sit on it Burnham decline the offer of Chi slow heaven.He wants to engineering etc. To check his plan and confirm his strength, eventually Ferris was approved in December year 1892 and start construction immediately. Soon this wheel's towering above the city, by the opening in the 50 may years 1893 Ferris wheel's Star City, ChicagoThe principle is that a bicycle wheel below the hanging from the central axis. And the lower half support by means of a steel frame, both the edge of it. In the construction of flexible enough to make this possible, the method of support And very flexible in production. But not enough to have the vibration until any sense. Ferris wheel to rotate or resulted in the slipping by the power of steam with a cauldron is located on the big field outside of work. For generating the steam store built under high pressure Underground piping to send high pressure steam to the large wheels on the ground under a big wheel. The energy put into from steam power to do.
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