Correlation of Material Waste Types With Life Cycle Stages in Building Projects Across The States in Southwest Nigeria

Abstract

This study correlates the different opinions held by Nigerian construction industry stakeholders who participated in the survey on the types of material wastes that are generated from the activities of procuring building projects across the states in southwest region of Nigeria. This was achieved through the random distribution of 261 questionnaires to build environment professionals recruited in the study. The results from 261 respondents was analysed using SPSS 26.0 and presented using tables, figure, ranking and percentile. The study found that the wastes from building construction activities are primarily physical in nature and perceived to be prominent at the post-construction and construction phases of a building project, however, it is seen to occur across the life cycle stages of a building project in varying proportions that adds up to become significant and critical. Additionally, the study found that paper was the most (31.7% and 39.5%) common form of wastes generated at the pre-design and design stages of a building project., while at the pre-construction stage, cardboard and other package materials (35.1%) were the most common form of waste generated, Also, the study revealed that at the construction stage, wood (80.5%), aluminium (88.55), sandcrete (85.0%), and ceramic (85.5) were mostly the form of waste generated, while at the post-construction stage, wire and cables (19.3%) were the mostly form of waste generated. However, the findings from this study provide a valuable reference for practitioners to develop and adopt strategic guides for managing material wastes on building construction projects across building construction stages that imbibes principle of sustainable construction.

Identification of Methods of Reducing Construction Waste in Construction Enterprises Based on Surveys

“…Construction waste can also be distinguished according to the properties of the materials, e.g., recyclable and non-recyclable waste, potentially biodegradable waste, waste that is potentially suitable for disposal at a landfill, and waste that is potentially suitable for incineration [11]. Another way to classify construction waste involves the consideration of its origin, e.g., from the construction of a new building, reworks or demolition [11,19,20], or related to the function of a building [21,22] or the source where this waste was generated [23][24][25][26][27][28].…”