APPRAISAL OF CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT PRACTICES IN LAGOS METROPOLIS, NIGERIA
APPRAISAL OF CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT PRACTICES IN LAGOS METROPOLIS, NIGERIA

Summary/Abstract: Construction and demolition waste CDW is debris from construction or destruction of a construction that are no longer useful, which has to be carefully disposed to avoid or minimize environmental hazards and prevent infliction of injuries to the people in and around the environment where such exercise takes place. The massive numbers of activities within the construction industry over the last few years continue to increase the generation of construction and demolition wastes at both macro and micro scale with unorganized management practices among contractors. Hence, the need to examine the practices of CDW management in Lagos Metropolis, Nigeria. A survey research design was adopted for this study. A snowball sampling technique was used to administer 200 copies of a questionnaire to contractors within the Lagos Metropolitan Area. Major findings revealed that most of the respondents are male (94%) and have over 15 years of professional working experience (76%). The top-ranked CDW in the study area are concrete with steel, glass, and broken tiles. Furthermore, the study revealed that the high cost of waste evacuation, inadequate adaptive disposal vehicles, poor waste logistics, quantity of waste, and poor information are the top-ranked challenges of CDW management practices in Lagos Metropolis. Findings also revealed that increasing competitiveness in the construction industry, increasing profit maximization, reducing environmental degradation, reducing the cost of waste disposal, and increasing employment opportunities are among the top-ranked prospects of CDW management practice. The result of the ANOVA revealed a significant variation among the challenges of CDW management practices in Lagos Metropolis (F= 956.137, p= 0.000 < 0.05). The study concluded and recommended the full adoption of the carrot-and-stick approach to achieving effective CDW management practices in the Lagos Metropolis and other cities in Nigeria.

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