Application Of Just-In-Time Delivery In The Construction Industry: A Case Study Of Lagos State, Nigeria

Abstract

This study investigates the application of Just-In-Time (JIT) delivery in the construction industry in Lagos State, Nigeria, with a focus on its impact on material management, quality control, inventory control, waste reduction and overall productivity. A quantitative research design was adopted, employing questionnaires administered to 203 registered construction professionals. Data analysis, conducted using SPSS, indicated that JIT is reasonably implemented in Lagos State construction projects, with waste reduction emerging as the most significant area of application. Exploratory factor analysis revealed two principal components: the quality factor, which includes material and supply chain management, quality control, labor management, technical challenges, regulatory requirements, and construction scheduling; and the waste reduction factor, which comprises inventory control, storage space management, waste minimization, and efficiency enhancement. The findings demonstrate that JIT implementation improves project efficiency and reduces waste, though challenges such as unreliable supply chains and coordination difficulties remain. To maximize the benefits of JIT in construction, the study recommends strengthening supply chain networks, enhancing project management competencies, and promoting a culture of collaboration and continuous improvement.