Demolition

tearing-down of buildings and other structures From Wikipedia, the free encyclopedia

Demolition
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Demolition, otherwise known as razing or wrecking, is a process in which buildings are torn down. Demolition is different from deconstruction, which is carefully taking a building apart to reuse its parts.[1] For small buildings, such as houses, demolition is often simple. Buildings are often pulled down with excavators, bulldozers or cranes. Other specialized equipment may also be used.[2] Larger buildings may use a wrecking ball swung by a crane.[3] This works well for masonry buildings. Sometimes building implosion is used.[3] This involves using explosive charges. If done correctly, the building falls in on itself and not on nearby buildings.

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A wrecking ball
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Preparation

Before a building can be torn down, several things have to happen.[4] A demolition permit has to be obtained from a city, town or county. All hazardous waste must be removed. This includes asbestos, lead paint and any flammable materials.[4] All utilities (water, electricity and natural gas) have to be disconnected.[4] Many municipalities have checklists of what to do before a building can be demolished and things that must be removed first.

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References

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