Importance Of Deconstruction

There is a scarcity of virgin resources in the nature therefore

, to ensure environmentalsustainability, deconstruction is very important, as it involves discerning dismantlement of building components. Demolition of a structure creates substantial amount of waste, which can be valuable, sometimes even more valuable than at the time when the building was constructed originally. Harvesting what is considered waste and reclaiming it while making new building is known as deconstruction.

Deconstructing buildings provides a new life cycle to the materials, and in turn leads to reduction in emissionsthat are caused by manufacturingnew materials. If the deconstruction is done on a local level, lots of energy and emissions are saved due to less transportation.

Deconstruction is different from demolition as the latter deals with clearing the site by the most expedient means, while the former facilitates reuse, recycling andwaste management. Deconstruction is known as construction in reverse, because the saved shell can be reused to design green buildings. Deconstruction helps in providing a new life to the remaining shell, even though the whole building no longer exists.

Leadership in Energy and Environmental Design(LEED) program of The United States Green Building Council offers seven credits for reusing materials. Shell reuse (particularly made using dimension stone), material reuse and using diverted waste from landfills accounts for the credit. Constructing new structures using the saved shell of a building or using the interior spaces to meet the demands of new structures have an environmental impact as well.

Apart from the structural deconstruction, non-structural deconstruction is very popular, which deals with the reuse of appliances,doors,finished materials and windows instead of opting for new windows, doors or appliances. Other than this, concrete recyclingis an increasingly familiar trend, where the rubble of concrete from the demolished or renovated structures is utilized.

Small pieces of concrete are used as gravel to be laid down as the lowest layer in a road, while the larger pieces can be used for erosion control. There are various advantages of using leftover concrete not only in the terms of economics, but also for the environment. Recycling concrete in the landfill is better alternative to dumping as it saves landfill space by keeping debris out; minimizes the need for gravel mining and helps in reducing the pollution caused by towing the fresh concrete in the trucks

by: USI

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