Abstract
In Pakistan, construction and demolition waste(CDW) is generated in voluminous amount each year. CDW iswidely ill-handled and ultimately fed to landfills causing harm tothe already alarming environmental conditions. In order tosearch for the solution of this drastic matter, a study was done,which is explained in this paper. This paper presents the studydone at a demolition site near Karachi, in Sindh while thedemolition works were being carried out. At the site there wereold barracks which were being demolished. Before the demolitionworks were commenced, the site was surveyed and structuralcomponents of the barracks were counted and their dimensionswere measured. When the demolition was over, the demolishedwaste was calculated which comprised of concrete and masonryrubble, steel round bars, steel doors, steel windows, steel ceiling,steel girders, steel main gate, and plastic water tank. This studyinterpreted that construction and demolition (C&D) works wereprogressing considering the works’ deadline and the clients’requirements but the ecosystem’s ecology and the environmentalhealth were not taken into account. Recommendations are madeto handle CDW properly throughout its lifecycle. Theserecommendations aim to provide technological and logicalsolutions to grip CDW. The recommendations include wastereduction and reusing waste, life cycle assessment and costing,environmental and economic impact, material flow analysis, andadvanced computerized-tools.
Highlights
WE dwell in the era where technology is encompassing our lives and industries
To tailor construction and demolition waste (CDW) management in a suitable way in Pakistan and to make the concerned authorities aware of CDW disarray, a study was done at a demolition site near Karachi in Sindh when the demolition of old barracks was going on there
The site was surveyed prior to demolition stage and demolition waste was calculated after the demolition works were over
Summary
WE dwell in the era where technology is encompassing our lives and industries. Construction and demolition (C&D) industry is struggling to move at the pace of technology and trying to acquaint (C&D) works with the same. Construction of new structures, and demolition of old structures, is an unavoidable part of this technological development and innovation. As a consequence of this scientific sprint in the construction industry, large amount of C&D waste gets piled-up. Production of CDW has increased globally in past decades [1]. CDW is causing irreversible harm to lives, health, flora, and fauna i.e., the environment. CDW includes all those waste materials that are produced during the construction works of new buildings and structures, renovation of existing structures, and demolition of old structures
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