title: Quantification of construction waste prevented by BIM-based design validation: Case studies in South Korea.
abstract: Waste generated in construction and demolition processes comprised around 50% of the solid waste in South Korea in 2013. Many cases show that design validation based on building information modeling (BIM) is an effective means to reduce the amount of construction waste since construction waste is mainly generated due to improper design and unexpected changes in the design and construction phases. However, the amount of construction waste that could be avoided by adopting BIM-based design validation has been unknown. This paper aims to estimate the amount of construction waste prevented by a BIM-based design validation process based on the amount of construction waste that might be generated due to design errors. Two project cases in South Korea were studied in this paper, with 381 and 136 design errors detected, respectively during the BIM-based design validation. Each design error was categorized according to its cause and the likelihood of detection before construction. The case studies show that BIM-based design validation could prevent 4.3-15.2% of construction waste that might have been generated without using BIM.
authors.affiliation: Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China. Electronic address: jongsungwon@ust.hk.
authors.forename: Jongsung
authors.initials: J
authors.lastname: Won
authors.affiliation: Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China. Electronic address: cejcheng@ust.hk.
authors.forename: Jack C P
authors.initials: JCP
authors.lastname: Cheng
authors.affiliation: Department of Architectural Engineering, Yonsei University, Seoul 120-749, Republic of Korea. Electronic address: glee@yonsei.ac.kr.
authors.forename: Ghang
authors.initials: G
authors.lastname: Lee
mesh_terms: D003198:Computer Simulation; D060389:Construction Industry / Q000379:methods*; D007220:Industrial Waste / Q000517:prevention & control*; D056910:Republic of Korea; D018505:Waste Management / Q000379:methods* / Q000706:statistics & numerical data
chemical_list: D007220:Industrial Waste
keywords: BIM-based design validation; Building information modeling (BIM); Construction waste; Likelihood; Prevention; Quantification