• Title/Summary/Keyword: 하자 분석

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A Study on the Types and Causes of Defects in Apartment Housing Information and Communication Work (공동주택 정보통신공사 하자 유형 및 원인에 관한 연구)

  • Park, Hyun Jung;Jeong, U Jin;Park, Jae Woo;Kang, Sang Hun;Kim, Dae Young
    • Journal of the Korea Institute of Building Construction
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    • v.21 no.3
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    • pp.231-239
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    • 2021
  • Entering the era of the fourth industrial revolution, information and communication technologies such as CCTV, home network systems and equipment are being used in the construction industry. In particular, in order to increase the autonomy of information and communication technologies in apartments, the government has announced an administrative revision of information and communication-related laws, and companies are focusing on developing technologies such as smart home services. In addition, most domestic and foreign studies on the information and communication work were mainly conducted on technology and management. However there is a lack of research on physical defects affecting the quality of ICT. Therefore, this study collected the defect data registered in the project management system of three domestic construction companies and classified them according to the standards of the Enforcement Decree of the Apartment House Management Act. According to the analysis of the frequency of defects work type, 88.10% of defects occurred in home network equipment work. In addition, analysis of defects type in the four detailed works showed the highest number of operation error. The cause was analyzed and prevention measures and countermeasures were presented in parts of design, construction, and maintenance. The results of this study will improve the quality of apartment housing and be used as basic data for future research on practical defect minimization and prevention measures.

Analysis of Defect Repair Cost by Work Type based on Defect Inspection of Apartments (공동주택의 하자진단에 기초한 공종별 하자보수비용의 분석)

  • Lee, Jin-Eung;Kim, Byung-Yun;Jeong, Byung-Joo
    • Journal of the Korea Institute of Building Construction
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    • v.15 no.5
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    • pp.491-500
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    • 2015
  • This study investigated defect status by work type, based on the report data of defect inspection results, acquired by consumers' request to safety inspection agencies, before the expiration of legal defect repair warranty period. In fact, the data was not acquired by centering on suppliers, namely, construction companies in relation with the defects becoming causes to increase construction cost of apartments. This study aims to provide objective and basic data for quality improvement at construction stage and for solution to defect disputes. The study results are presented below: (1) The number of defect cases occurring from architectural work among total work types were 1,986, defect occurrence rate was 62.5%, and defect repair cost was KRW $25,851/m^2$, which stood at 78.2% of the total work types. This means the defect occurrence rate and defect repair cost in architectural work are bigger than those of other work types. (2) Major defects in architectural work were revealed in the following order: cracks from frame work, inferior interior finishing work, inferior finishing work of plaster/masonry works, water leak/damage from waterproof work and withering/omission from landscape work. The total repair cost of the major selected defects was KRW $12,220/m^2$, and was analyzed to take up 37% of the total defect repair cost.

The Implementation of Web-based Defect Information Feed-Back System for Construction Management in the Construction Process -Focused on Apartment Houses- (시공단계의 효율적 공사관리를 위한 Web기반 하자정보 Feed-Back시스템 구현방안 - 공동주택을 중심으로 -)

  • Cho Yong-Min;Park Tae-Keun
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • autumn
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    • pp.482-485
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    • 2002
  • The boom of housing market lead to build a lot of apartment houses concentrated on the metropolitan area and developing new city in 1980's made 2,000,000 houses. In this time, quality standards could not be satisfied with consumers' desire due to the policy about excessive supply and come from unexpected defects in the complected buildings. In $1980's\~1990's$, It would be performed on the study for defect prevention in apartment houses. It has contributed in no way to the reduction at the rate of the defect outbreak and the solution of consumers' dissatisfaction by flaws. The reason is that the study related defects is not linked and applied by the managing and controlling system, Therefore, the study will be analyzed out defect information occurred on apartment houses of domestic construction and classified by type features. As a result, it will suggest web-based feed-back system for getting systematic information and the practical use.

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A Study on the Contractor's Liability for the Defects in the Public Construction Works (공공건설사업의 하자에 대한 수급인의 책임에 관한 연구)

  • Cho Young-Jun;Hyun Chang-Taek
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • autumn
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    • pp.46-53
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    • 2002
  • Although Public Construction Works in Korea have been executed according to Government Contract Act, and nature of contract is very complicated. So it is difficult to define liability for the defects. Therefore the studies on the defective performance and contractor's defects liability were remained one of the non-cultivated virgin land. As a result, contract privy waive the right to claim or generally resolve the problems. Therefore domestic and overseas liability for the defects was investigated and liability for the defects, under and after construction, on the defective performance and defects, was analysed. With a literature research, contractor's defect liability was systematically analyzed, problems were defined and resolution of the problem were suggested item by item in this study.

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A Developing a Machine Leaning-Based Defect Data Management System For Multi-Family Housing Unit (기계학습 알고리즘 기반 하자 정보 관리 시스템 개발 - 공동주택 전용부분을 중심으로 -)

  • Park, Da-seul;Cha, Hee-sung
    • Korean Journal of Construction Engineering and Management
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    • v.24 no.5
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    • pp.35-43
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    • 2023
  • Along with the increase in Multi-unit housing defect disputes, the importance of defect management is also increased. However, previous studies have mostly focused on the Multi-unit housing's 'common part'. In addition, there is a lack of research on the system for the 'management office', which is a part of the subject of defect management. These resulted in the lack of defect management capability of the management office and the deterioration of management quality. Therefore, this paper proposes a machine learning-based defect data management system for management offices. The goal is to solve the inconvenience of management by using Optical Character Recognition (OCR) and Natural Language Processing (NLP) modules. This system converts handwritten defect information into online text via OCR. By using the language model, the defect information is regenerated along with the form specified by the user. Eventually, the generated text is stored in a database and statistical analysis is performed. Through this chain of system, management office is expected to improve its defect management capabilities and support decision-making.

Evaluation of defective risk for the finishing work of apartment house (공동주택 마감공사의 하자위험도 평가에 관한 연구)

  • Kim, Jin-Hyun;Go, Seong-Seok
    • Korean Journal of Construction Engineering and Management
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    • v.13 no.6
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    • pp.63-70
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    • 2012
  • The apartment house taking most part of our housing types was facing the limit of consumption from the housing supply-oriented policy in the past of rapid urbanization resulting in being transferred to the housing supply-oriented one. Accordingly the requirement for housing quality by customers is diversified varied, in order to meet this the effective and systematic quality control for preventing the defects from the stage of building is required. In this study for the effective and systematic quality management for defects of apartment house analysis on the frequencies and loss expenses from defective maintenance regarding examples of apartment houses having been moved in within five years recently, and the survey on their dwellers' consciousness were made, and the table for quantified apartment house defective risk.

A Study on Types and Problems of Defect lawsuit on Apartment Buildings (공동주택 하자소송의 발생형태 및 문제점에 관한 분석연구)

  • Seo, Deok-Seok;Um, Sang-Kweon
    • KIEAE Journal
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    • v.7 no.6
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    • pp.127-132
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    • 2007
  • Recently, the cases of lawsuit are growing on residential defects. Though, mostly residential construction companies are trying to mitigate resident's dissatisfaction due to keep the company's brand image by operating customer service team, some representatives of apartment buildings initiate litigations without any negotiation with countrepartner companys incited by planned suit lawyers. But lawsuit takes longtime to sentence(about more than one year), and judged amount of money are very few (averaging about 14%) compared with asserted amount of it. To suggest the improving alternatives, the types and problems of defect lawsuit on apartment complex are analyzed.

Critical Management Factors of Fluid-Applied Membrane Waterproofing Work for building basements (지하층 도막방수공사의 중점관리요인)

  • Kwon, Hae-Rim;Yu, Jung-Ho
    • Journal of the Korea Institute of Building Construction
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    • v.9 no.6
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    • pp.91-98
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    • 2009
  • One role of waterproofing work is to block external moisture and water. Defects in waterproofing work in building construction brings on huge repair costs for related construction work as well as for the waterproofing layer itself. However, we don't have a quantitative probabilistic management method for waterproofing work to successfully anticipate and prevent defects. From an analysis of the literature and prior research, defects in the waterproofing work in the underground parts of buildings occur frequently. We selected Fluid-Applied Membrane waterproofing work as representing waterproofing work in the underground parts of a building, and researched the general types and causes of defects. In this study, we developed the Relative-FMEA (Failure Mode and Effect Analysis) approach that merges the Matrix method and FMEA. From a survey of experts, we deduced the most important management factors for Fluid-Applied Membrane waterproofing work for the underground parts of buildings.

The Effect of Aggressive Order Intake on Defect of Construction Companies - Empirical Analysis Using Financial Approach - (공격적인 수주행위가 건설기업의 하자발생에 미치는 영향 - 재무적 접근을 이용한 실증분석 -)

  • Park, Hong-Jo;An, Sung-Hoon
    • Journal of the Korea Institute of Building Construction
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    • v.21 no.2
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    • pp.149-156
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    • 2021
  • This study empirically verified whether aggressive order intake affect occurrence of defects of Korean construction companies. In order to compensate for the shortage of construction costs due to aggressive low-cost orders of contractors, self-response measures such as design changes are followed, and construction defects may be induced in this process. It aims to verify relevance between aggressive order intake and defect in construction empirically using financial accounting data. As a result, it was confirmed that an abnormal increase in order volume and a deterioration in profitability such as operating margin due to aggressive order taking behavior leads to a decrease in construction quality and occurrence of defects. In addition, it was also confirmed that low construction ability and intentional changes in construction design or contract conditions after construction commences were a direct causes of defects. The results of this study can serve as an opportunity to come up with measures to prevent defects by confirming the relationship between defects in construction and deterioration of profitability due to aggressive low-cost order takings.