DEVELOPMENT OF CONSTRUCTION WASTE MANAGEMENT FRAMEWORK FOR REFURBISHMENT PROJECTS

DEVELOPMENT OF CONSTRUCTION WASTE MANAGEMENT FRAMEWORK FOR REFURBISHMENT PROJECTS内容摘要：

Journal of Building Performance ISSN: 2180-2106 Volume 9 Issue 2 2018 http://spaj.ukm.my/jsb/index.php/jbp/index DEVELOPMENT OF CONSTRUCTION WASTE MANAGEMENT FRAMEWORK FOR REFURBISHMENT PROJECTS Norfadhillah Binti Yahaya1, Azlan Shah Bin Ali2 Public Works Department of Malaysia, Kuala Lumpur 2 Faculty of Built Environment, University of Malaya, 50603, Kuala Lumpur, Malaysia. *Corresponding author: alidyila11@gmail.com 1 Abstract The high demand of building refurbishment creates an increase in construction waste. Construction waste has been associated with a negative impact on the performance of refurbishment projects such as delay and over budget. Therefore, construction wastes in refurbishment projects have been identified as an important issue to improve the waste management of the refurbished building. The main objective of this paper is to establish a relationship between the causes of construction waste towards cost and time overruns. This study further analysed the mitigation measures that can minimise construction waste. The primary data were obtained using questionnaire surveys that were distributed among quantity surveyors, in Peninsular Malaysia, who oversee refurbishment projects. Through an extensive literature review, both qualitative and quantitative data were employed. A set of questionnaire surveys was initially conducted for sixty-five (65) projects, followed by semi-structured interviews for five (5) interviewees, so as to validate the critical causing factor and to establish a correlation between the factors. The obtained data were then analysed using the ‘Statistical Package for Social Science’ (SPSS). The inferential analysis method through Spearman correlation test was applied to test all correlations in this study, while the descriptive analysis was used to evaluate the demographic of the respondents. The results indicated a significant relationship between the causes of material waste and the performance of refurbishment projects. The analysis revealed that design changes, poor storage and improper packaging are the most prominent factors that cause material waste. These causes demonstrate a significant correlation with the performance of refurbishment projects. On the other hand, proper storage, the handling of materials on site and good construction management were identified as not significantly correlated, however, they possess high potential for mitigation measures. Therefore, an integrated refurbishment waste framework was established, which involved the causes-effect correlation, as well as, the mitigation measures for solving it. Keywords: Waste Management, Construction, Refurbishment Article history: Submitted: 23/11/2017; Revised: 21/2/2018; Accepted: 26/03/2018; Online: 1/06/2018 BACKGROUND OF STUDY Refurbishment projects have been identified as an important sector in the construction industry due to existing and high presence of building deterioration, the increasing number of aged buildings and building obsolescence. Refurbishment work has fundamentally increased in the last quarter century in the UK. Egbu (1998) observed, from DOE (1981) and CCCIS (1996) that refurbishment work had escalated from 22.46% to 42.32% from the total UK construction output between 1981 to 1996. Ali et al. (2008) stated that the growing number of old buildings, along with rapidly changing innovations in Malaysia’s development, required modification so as to facilitate the current utilisation of buildings. Thus, this indicated that refurbishment is a popular sector compared to other sectors in the construction industry. However, builders in the construction industry have shown poor waste management practices. This was reported by Intan (2005), who studied on construction waste management of 13 projects in Surabaya, Indonesia. The report stated that materials on site were 12.51% badly selected (resulting in fragile and crushed materials during handling and execution), 11.39% of poor management of material operations and 4.67% of poor practices in waste management. Furthermore, the project team and workforce have both inadequate knowledge and lower readiness for addressing the construction waste issue (Gavilan and Bernold, 1994). These circumstances tend to impact the performance of construction achievements. Malaysia has fallen into the construction waste problem in parallel to the substantial growth of refurbishment projects. The CIDB (2015) reported that in year 2006 refurbishment constituted 16% of