Impact of Adopting Lean Principles on Construction Waste in Developing Countries

Abstract

Construction projects in developing countries often face challenges related to inefficient practices and high levels of waste, leading to cost overruns, delays, and environmental degradation. Lean construction principles have gained attention as a systematic approach to minimize waste and improve efficiency in construction projects worldwide. However, the impact of adopting lean principles on waste reduction in developing country contexts remains a subject that requires investigation. This case study aims to examine how implementing lean construction principles can reduce waste in building projects in developing nations. The research utilizes a mixed-method approach (qualitative and quantitative). Qualitative interviews are conducted with key stakeholders, including project managers, contractors, and architects, to gather their perceptions of the most common type of waste in the construction process and how the lean principle implementation minimizes waste. Quantitative approach: a case study was conducted using a lean simulation model by ARENA software, to measure the impact of lean construction principles on the overall performance of the construction (reinforcement process). One of the key findings in the case study is that the lean model enhances the overall efficiency of processes by eliminating non-value-added activities, standardizing work procedures, and fostering continuous improvement. These practices lead to a reduction in wasted resources, such as the reinforcement process (improvement in overall cutting process by 67.1% and in bending process by 21%) and enhance work productivity by 19.6%, and thus refinement in the overall time cycle by 24.5%. In summary, by adopting lean principles, businesses can create a more sustainable and efficient future while contributing to the overall preservation of natural resources and the environment by focusing on value-added processes.