LDA-Based Model for Defect Management in Residential Buildings

Byeol Kim,Sanghyo Lee,Yonghan Ahn

doi:10.3390/su11247201

Byeol Kim, Sanghyo Lee + Show 1 more

Open Access

https://doi.org/10.3390/su11247201

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Journal: Sustainability	Publication Date: Dec 16, 2019
Citations: 6	License type: CC BY 4.0

Affiliation: Kangwon National University, Hanyang University

Abstract

This study systematically analyzes various defect patterns that occur during the warranty period of residential buildings using the loss distribution approach (LDA). This paper examines 16,108 defects from 133 residential buildings where defect disputes occurred between 2008 and 2018 in South Korea. The analysis results showed that the defect losses were relatively high in reinforcement concrete (RC) work (3/5/10 years), waterproof work (5 years), and finish work (2 years). It is shown that RC work has a high frequency of defects, such as cracks in concrete in public spaces affected by external factors. In addition, it was analyzed that the type of defect needed high repair cost because the area where the defect—such as incorrect installation and missing task—occurred, needed construction again. According to the level of frequency and severity, losses were divided within four zones to provide detailed strategies (by period). This will effectively contribute to minimizing unnecessary losses from defects as quantifying the losses of defects.

Highlights

The proportion of people living in cities is expected to reach 66% among the global population by 2050
This study aims to systematically analyze the patterns and profiles of various defects that occur during the defect liability period (DLP) of residential buildings by using the loss distribution approach (LDA)
It is difficult to identify the cause of defects resulting from complex mechanisms; there is a limit in deriving

Summary

Introduction

The proportion of people living in cities is expected to reach 66% among the global population by 2050. For this trend, apartments are becoming a major residential type in many countries, including Vietnam, Singapore, South Korea, and the United States [1,2]. As the functionality of apartments becomes more complex and higher, the importance of quality management is increasing [3]. The quality control of apartments aims to maintain a high-quality construction environment so that many residents can live in a safe, comfortable, residential environment [4]. Defect management is critical to maintaining the building performance [5]. Defect management can contribute to the sustainability and durability of residential buildings

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