LEAN CONSTRUCTION PRINCIPLES FOR WASTE REDUCTION AND SUSTAINABILITY IN BUILDING PROJECTS

Abstract

The paper is on assessment of lean construction waste reduction principles in view of enhancing construction sustainability. Determination of the population of the study was through purposive sampling technique to intentionally select 118 participants among building construction professionals to whom questionnaires were administered. Taro Yamane formula was used to obtain the sample size of 91. Quantitative and descriptive statistics such as frequency tables, content and narrative analysis, simple percentages, mean score index (Mx), relative importance index (RII), and component factor analysis were used to successfully analyse and present the data obtained from the questionnaire survey. It was revealed from the results of the study that implementing the lean principle of waste elimination and optimize the whole ranked highly significance with RII (0.93) as ways to ultimately enhance waste reduction on construction sites through team collaboration. This paper concluded that the integration of lean principles in the construction process through development of checklist and following the steps are easy ways to enhance waste reduction and construction sustainability and increase productivity across all construction process. It was recommended that since lean construction principles can be used to achieve higher efficiency, reduce costs, improve quality, and enhance client satisfaction, professional bodies in the construction industry should prioritize integrating lean construction principles for waste reduction into construction process through development of checklist to serve both as a guide and a reminder on the steps for the sustainability of building projects.