By
MATHANBALAJI SABHAPATHI
POTENTIAL SOURCES OF WASTE IN CONSTRUCTION: INTRODUCTION: Construction industry is the important source of waste production in the world almost in all the countries. The construction process currently generates significant quantities of waste: about a fifth of all waste and up to 40% of all solid waste is attributable to the construction sector. As much as 10% to 30% of construction material is wasted during construction [1]. The formwork for cast-in-place concrete is one of the biggest sources of construction waste. Working on a temporary site, it is often difficult to arrange recycling logistics, and many subcontractors think it is better to deliver too much than too little. Moreover, mistakes in design can cause unnecessary demolishing and rebuilding. Hence the aim of the government is to minimize these wastes. Waste minimization is identified as one of the key factors for achieving sustainability. Some methods were invented for waste minimization such as use of software’s such as BIM, CAD etc. which are explained in detail in the upcoming paragraphs. Implementing any successful waste minimization strategy requires the assessment of the waste. Hence waste minimization has to be embedded as one of the project objectives for that lead to sustainability [1]. The objective of this paper is to explore the sources of waste in construction and minimization of the waste using the BIM technique is evaluated.
Sources of waste in construction:
Construction waste can be divided in to three main categories: 1. Material 2. Labor 3. Machinery waste.
The material waste is the main source in construction activity because most of the raw materials from which construction inputs are derived come from non-renewable resources. The term “waste” is a familiar term in the industry all over the world. The various sources of waste are
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