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In Pakistan, construction and demolition waste
(CDW) is generated in voluminous amount each year. CDW is
widely ill-handled and ultimately fed to landfills causing harm to
the already alarming environmental conditions. In order to
search for the solution of this drastic matter, a study was done,
which is explained in this paper. This paper presents the study
done at a demolition site near Karachi, in Sindh while the
demolition works were being carried out. At the site there were
old barracks which were being demolished. Before the demolition
works were commenced, the site was surveyed and structural
components of the barracks were counted and their dimensions
were measured. When the demolition was over, the demolished
waste was calculated which comprised of concrete and masonry
rubble, steel round bars, steel doors, steel windows, steel ceiling,
steel girders, steel main gate, and plastic water tank. This study
interpreted that construction and demolition (C&D) works were
progressing considering the works’ deadline and the clients’
requirements but the ecosystem’s ecology and the environmental
health were not taken into account. Recommendations are made
to handle CDW properly throughout its lifecycle. These
recommendations aim to provide technological and logical
solutions to grip CDW. The recommendations include waste
reduction and reusing waste, life cycle assessment and costing,
environmental and economic impact, material flow analysis, and
advanced computerized-tools.
Nadia Qamar, Ayesha Alam Khurram. (2018) Tackling Demolition Waste – An en route to Sustainable Development, Sir Syed University Research Journal of Engineering & Technology, Volume-08, Issue-1.
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