Importance of Deconstruction by anamaulida

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									There is a scarcity of virgin resources in the nature therefore, to
ensure environmental sustainability, 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 emissions that are caused by
manufacturing new 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 and waste management. Deconstruction is
known as -œconstruction 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.      -œLeadership 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 recycling is 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.


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