Assessment of Material Wastage of Bulding Construction Site

Abstract

There are a lot of wasted building materials on Nigerian construction sites. This demonstrates that researchers and project managers have not given construction materials waste management enough thougat. Therefore, there is an issue with Nigerian construction professionals' inadequate comprehension and ignorance of the reasons and origins of material waste development at various project phases. In order to promote improved project performance in Abuja, Nigeria, this study intends to evaluate the opinions of contractors, consultants, and clients on material waste on construction sites. The quantitative method was used in the study. The study's population consists of construction sites located in Abuja, Nigeria. Using purposive non-probability sampling approaches, a sample of forty (40) building projects valued at 250 million Naira or more were chosen from this population. One hundred and twenty (120) structured questionnaires were given to the practitioners, who were clients' representatives. consultants and contractor) in the building sites who had knowledge of waste generated during construction process. Mean item score (MIS) and percentage were used to analyse the data collected. Based on average percentage ranges values between 20.16% and 21.7%, the study determined that the most wasteful materials generated on sites were formwork, concrete, and mortar from rendering/plastering and blockwork/brickwork. The most significant factors influencing the development of material waste during construction were found to be Design (poor design and frequent design modifications), Poor materials storage system, and Theft and Vandalism (MIS 4.52-4.91). It was advised that designers should match the dimensions of materials ordered for on-site use with those specified during the design process. All parties involved in construction are accountable for waste management since waste not only costs contractors' money but also harms the environment and depletes client resources.