Views:3 Author:Nicole Miao Publish Time: 2016-02-29 Origin:Site
There are two basic types of tower cranes, and they are generally categorized based on how they are constructed. A standard tower crane is assembled using a smaller supplementary crane. A self-erecting tower crane contains a hydraulic base, which forces sections of the tower up to a specified height. A secondary crane is used to attach the jib before the hydraulic mechanism is activated.
Tower cranes are often rented or leased for the duration of the project. They are known for their high cost, and also for the high number of safety precautions required to prevent collapse or injury. In very tall or complex buildings, the tower of the crane may be left in place, where it becomes a permanent part of the building. This allows builders to successfully complete a project without the risk of damage caused by trying to remove a crane from a finished building.
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