• Title/Summary/Keyword: 하자 요인

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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.

A Priority and Impact Factor Analysis of Construction Management Tasks for Decreasing Change Orders and Defect Repairs in Cancer Treatment Center Projects (암센터 의료시설의 설계변경과 하자보수의 감소를 위한 중점 관리공사 분석)

  • Lee, Chijoo;Lee, Ghang;Sim, Jaekyang
    • Korean Journal of Construction Engineering and Management
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    • v.14 no.5
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    • pp.55-64
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    • 2013
  • The complexity of constructing medical institutions is higher than that of general buildings, and many change orders in the design and defect repairs in the construction phase are required due to strict government regulations. The priority control of constructions and impact factors of medical institutions were analyzed in this study, and difficulties in the control in the design and construction phase were identified. First, the priority management factors that were identified were as follows: architecture, facilities, and electricity. Second, 1) priority management in constructions and factors resulting in change orders and 2) priority management in constructions involving defect repair were analyzed. Third, the importance recognized by the construction managers were analyzed. The priority management in constructions and factors that were recognized by the construction manager were deducted as having low importance, although there were many change orders and defects. The work of finishing, wall building, joining, office automation and communication function, and lighting were analyzed in the design phase, and waste, the office automation and communication function, ceilings, contamination control, and plumbing were analyzed in the construction phase. The results showed that there will be a decrease in change orders and defects if the concentration of the manager was elevated and priorities were managed.

Characteristic Analysis of Utilization of Security Deposit for Repairing Defects Using Statistical Analysis (통계분석을 이용한 공동주택 하자보수보증금 특성 분석)

  • Seo, Deok-Seok;Lee, Ung-Kyun
    • Journal of the Korea Institute of Building Construction
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    • v.15 no.2
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    • pp.209-215
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    • 2015
  • This study was conducted to analyze the actual utilization rate of the deposit for defect repair of apartment complexes and its influential factors. We analyzed the data on enforced defect deposit cases by using one-sample t-test, Pearson's correlation analysis, and simple linear regression analysis. The difference between the deposit amount specified and the enforcement amount actually disbursed was found to about 0.51%. The change rates for short-term costs amounted approximately to $839KRW/m^2$ and 130,000 KRW/household per year, and those for long-term costs were $647KRW/m^2$ and 123,207 KRW/household per year. The results warrant the need for further research on establishing a deposit amount based on actual statistical data.

한의학에서 알아본 강박증 - 마음속 깊은 응어리를 풀자

  • 조홍건
    • 가정의 벗
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    • v.37 no.5 s.429
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    • pp.12-13
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    • 2004
  • 억제하면 억제할수록 불안해지는 생각을 더 많이 하게 된다는 강박증, 그 원인이 단순하지 않고 한가지 요인이 아닌 체질과 환경의 다양한 영향으로 생기게 되는 병이라 한다. 한의학을 통해 강박증의 원인과 치료에 대해서 알아보도록 하자.

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Bravo silver - 대상포진에 대해 궁금한 모든 것!

  • Lee, Haeng-Rim
    • 건강소식
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    • v.39 no.7
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    • pp.20-21
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    • 2015
  • 대상포진은 전염병이 아니므로 발병원인에 계절적 요인이 있는 것은 아니지만, 여름에는 더위로 인해 체력 및 면역력이 떨어져서 대상포진이 더 많이 나타나는 것으로 알려져 있다. 몸도 마음도 지치기 쉬운 여름을 맞아 대상포진에 대해 궁금했던 모든 것을 알아보도록 하자.

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A Case Study on the Debonding Defect of Wood Floor Board in Apartment House (공동주택 바닥 목재 마루판 들뜸 하자 사례조사 연구)

  • Choi, Sung-Yong;Han, Min-Cheol;Han, Cheon-Gco
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2008.11a
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    • pp.914-917
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    • 2008
  • This paper was to discuss the case and cause of debonding defect of wood floor board in apartment house by investigating actual survey. Most frequent defect in wood floor board was debonding of floor board. Scratch, gap and crack of floor board were also found in floor board installment work. Causes of debonding of floor board is shrinkage of cement mortar beneath floor board and expansion of floor board. Haste in floor board work did not provide enough time to dry cement mortar fully, which led to continue to dry after the installment of floor board. It caused moisture movement toward wood floor board. Accordingly, Before floor board work, careful consideration on moisture condition of cement mortar and enough curing time to eliminate the effect of moisture are taken into.

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Statistical Analysis on the Correlation Between tile Defects in Apartment Houses and Environmental Factors (공동주택 내 타일 하자와 환경적 요인의 연관성에 대한 통계분석)

  • Pyeon, Su-Jeong;Kim, Gyu-Yong;Choe, Gyeong-Cheol;Lee, Sang-Soo;Lee, Yea-chan;Nam, Jeong-Soo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.11a
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    • pp.56-57
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    • 2021
  • Apartments, an intensive residential type, exist and are supplied in large quantities regardless of the size of the city. The value of an apartment is affected not only by the surrounding infrastructure, but also in terms of maintenance. Defects that occur in apartments come in various forms, and mainly poor finishing accounts for 60% of the defects. Among them, tile defects accounted for a large proportion and were found to be caused by several factors. This paper analyzed the influence of each factor considering the coefficient of thermal expansion affecting tile defects according to the domestic seasonal climate.

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