There have been arguments in terms of defects liability for apartment building, and one of the arguments is that crack width less than 0.3mm which is appeared in the concrete structures should be defined as defects without application of allowable crack width under Construction Specification. Another argument states that the crack width less than 0.3mm appeared in concrete structures is not defect according to the Construction Specification. This study analyzes the engineering characteristics of concrete crack appeared in apartment building with the comparison of allowable crack width in terms of design, construction, and maintenance.Moreover, regarding defects in apartment building, this study analyzes legal problems which are found in the comparison of defects liability clause stipulated in the related regulations, and also analyzes all together the foreign regulations on defect liability and defect repair costs in the previous appraisal reports.

Abstract
1. 서 론
2. 콘크리트 균열하자책임의 판정기준
3. 공동주택에 나타난 콘크리트 균열 하자보수공사비 조사 분석
4. 콘크리트 하자의 균열허용한계 법률적 판단 제안
    4.1 법률상 문제점
    4.2 시방규정상 문제점
    4.3 시방규정상 문제점
    4.4 공동주택 하자의 균열보수책임 수준의 법률적 판단기준 제안
참고문헌

• 박주경(대한이앤씨) | Park Ju-Kyung
• 정태영(대한이앤씨 기업부설연구소) | Chung Tae-Young