Abstract
Rapid growth in construction activities as a result of a growing population and urbanization in many parts of the world generates a large amount of waste from construction. To reduce and manage these wastes, a comprehensive understanding of the construction waste generation factors is needed. The purpose of this study is to identify the contributing factors of construction waste in Thailand’s construction industry. The causes of construction waste were identified through an extensive literature review. A total of 28 causes of construction waste were identified and grouped into the four categories: design and documentation, material and procurement, construction method and planning, and human resources. To determine the significant level of each factor, a structured questionnaire survey was carried out to gather information from contractors about causes of construction material waste. The results show that the categories contributing to construction waste ranks as design and documentation, human resources, construction methods and planning, and material and procurement, respectively. Meanwhile, factors from each category were also determined and ranked. Design change, inattentive working attitudes and behaviors, ineffective planning and scheduling, and material storage were among the highest impact factors on construction waste generation in each category. Identifying the significance levels of waste generation factors will help the industry’s stakeholders build suitable strategies to manage construction waste more effectively.
Highlights
In 2017, the world population was 7.6 billion, and by 2050, this will increase to 9.8 billion people [1]
These characteristics provide insight into construction waste generation factors that are influenced by building type, size, and height, as well as whether it differs
Designers’, supervisors’, and workers’ competences are likely to be important in successful construction waste management, and the experience of these people is important in terms of controlling or reducing other waste generation factors
Summary
In 2017, the world population was 7.6 billion, and by 2050, this will increase to 9.8 billion people [1]. 55% of the world’s population lives in urban areas, and this will increase to 68% by 2050. In 2050, there will be another 2.5 billion people living in urban areas, with 90% of this migration occurring in Asia and Africa [3]. The population is likely to continue increasing, with as high as 69.46% of the people living in urban areas [3]. The construction industry is a major mechanism for infrastructure development to support cities’ expansion and has a contributing role in environmental degradation. The construction industry uses 35% of produced energy and released 40% of carbon dioxide into the Earth’s atmosphere. The building construction process produces material waste that negatively impacts the environment
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