Year: 2024
Type: article
Study design: Observational Study
Abstract: The rapid development of the construction industry has caused in the construction materials wastage that negatively affect the environment, budget and humanity. The aim of this study is to assess the cause of construction materials wastages on public construction project a case of Mettu town. The target population was selected randomly consultant and contractors of public construction project in Mettu town. The questionnaires were distributed to the respondents’ a categories of questionnaires according to five groups on the cause of construction materials wastage of construction project. The main technique of data analysis was descriptive statistics comprising of percentage, mean value and relative importance index. The result of data analysis are shows on the tables and figures of the data collection. Kruskal-Wallis test and Mann-Whitney U-Test were used to test the hypotheses. The first three highest contributors to cause of construction material waste are found Group 3 operation, Group 1 design and documentation, and Group 5 site supervision in terms of groups with average relative importance index of 0.697, 0.686 and 0.680 respectively. The three rank cause of key construction materials, which are wasted on construction sites are Tile, Block (HCB), concrete, the relative importance index value are 0.683, 0.680, and 0.678 are wasted respectively. The statistical difference in the perceptions of the various group’s contractor and consultant concerning the most cause of wastage construction material produced during construction project. To evaluate the difference across five groups of cause of construction materials wastage on the contractor and consultant was tested using kruskal-wallis test. The test is significant difference of contractor, consultant and average (Aysmp sig. 0.000, 0.431, 0.812 are respectively. In the preference of cause of construction materials wastage for five groups of respondents are (Group 1=12, Group 2 = 19, Group 3 = 14, Group 4 = 13, and Group 5 = 5). The waste of construction materials is a common occurrence in Mettu town. Therefore, it is the obligation of all parties involved in the construction sector to minimize the construction materials waste. This study suggested that in order to achieve efficient waste reduction in the construction business, contractors and consultants need to receive the necessary training and motivation. The study's conclusions may have applications in waste management, construction technology, and control for environmentally friendly public construction projects.
Institution: Mattu University
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4402952088