Structure relocation
Structure relocation
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Structure relocation

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Structure relocation

A structure relocation is the process of moving a structure from one location to another. There are two main ways for a structure to be moved: disassembling and then reassembling it at the required destination, or transporting it whole. For the latter, the building is first raised and then may be pushed on temporary rails or dollies if the distance is short. Otherwise, wheels, such as flatbed trucks, are used. These moves can be complicated and require the removal of protruding parts of the building, such as the chimney, as well as obstacles along the journey, such as overhead cables and trees.

Reasons for moving a building range from commercial reasons such as scenery to preserving an important or historic building. Moves may also be made simply at the whim of the owner, or to separate a building from the plot of land on which it stands.

Elevating a whole structure is typically done by attaching a temporary steel framework under the structure to support it. A network of hydraulic jacks is placed under the framework and controlled by a unified jacking system, elevating the structure off the foundation. An older, low-technology method is to use building jacks called screw jacks or jackscrews which are manually turned.

With both types of jacking systems, wood beams (called cribs, cribbing or box cribs) are stacked into piles to support both the structure and the jacks. The structure is then lifted in increments. Once the structure is at a sufficient height, hydraulic dollies (or a flatbed truck) are placed under the supporting framework. These are used to move the structure to the new location. After the move, the steps are reversed and the structure is lowered.

There are several reasons why a structure may be moved. For example, a redevelopment, such as urban regeneration, could cause a relocation. The buyer of a building may wish to move it to a new location, or the owner might sell the land that the building is on while keeping the building.

Another reason for the relocation of a building is to preserve it for historic interest. An example of such preservation is the Lin An Tai Historical House in Taiwan. Such a move could be made because a building is in danger at its present location.

On the island of Chiloe, in Chile, there is a tradition of moving houses if the original site is haunted. The house is placed on tree trunk rollers and dragged to the new location by oxen.

London's Marble Arch (1847) was originally the entrance to the newly rebuilt Buckingham Palace. Following the expansion of Buckingham Palace, it was dismantled and rebuilt at a location near Hyde Park, with work being completed in 1851.

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