What Types Of Demolition Are There?
Demolishing a building is far more than just tearing them apart and knocking them down. There is far more to the art of demolition than just destruction. Both demolition and deconstruction are sort of an art form. But deconstruction is a more careful tear down of buildings so important pieces can be salvaged for re-use. These items have to be taken apart carefully.
When demolishing a small building, such as a house, the process is relatively simple. It is done either by hand or with machines. The buildings are torn down in place. Larger buildings buildings such as offices require something on the heavier side.
Usually a wrecking ball, a heavy weight attacked to a strong cable and a crane, is used. The crane swings the ball and slams it into the building, causing the destruction. This style is best with brick or other masonry work. But because it can be hard to control, newer hydraulic shear methods are being utilized. This would be non explosive demolishing.
For buildings that are substantially larger such as stadiums and skyscrapers, the demolition method turns to implosion. This is a fascinating technique if you ever get to watch an implosion. The implosion itself takes but a few seconds. However, the initial process of setting it up can take anywhere from weeks to even months to plan. For buildings in urban areas, it is essential to use implosion. This keeps damage from the surrounding area and the building is designed to fall into its own footprint.
While the implosion takes seconds, the preparation can take weeks to months to properly plan. First, the building needs to be stripped out. Copper is removed, as this is valuable and can be recycled. Copper can be found in both wiring and plumbing. Glass and insulation are also removed as these can both cause damage to the area. After, non weight bearing walls are removed along with drywall.
The charges will be set into holes which are drilled into the floors of the building followed by the detonation cord wrapped around pillars. Demolition companies will try to use as little explosive as possible to implode the building. This is for the safety of both the workmen as well as the surrounding neighborhood. After the nitroglycerin and TNT do their job, all that is left is the clean up.
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