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Title |
Field Survey on the Construction Errors for the Members of Reinforced Concrete Structures
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Keywords |
보 ; 기둥 ; 콘크리트 구조물 ; 현장조사 ; 슬래브 ; 시공오차 ; 단면크기 ; 벽 Beam ; Column ; Concrete construction ; Field survey ; Slab ; Tolerances ; Thickness ; Wall |
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Abstract |
Information on the distribution characteristics of construction errors is very important to determine the member factors, which are to be introduced in a new Korean design code for reinforced concrete structures. The new design code, which is under development for reinforced concrete structures, is based on the performance design concept. The construction errors of reinforced concrete members are mainly caused by the firmness and dimensional accuracy of forms, the arranging condition of reinforcing bars, the pouring and compaction methods of concrete, the skills of field workers, and the experience of supervisors. To find out the construction errors of reinforced concrete structures already built in Korea, a field survey for cover thickness, effective depth of reinforcement, the thickness of slabs and walls, and the dimension of beams and columns has been performed. Based on the survey, which is the first time in Korea, the analysis results are presented. The measuring methods for the construction errors, which have been established through the laboratory tests, are also presented. In addition, the measured construction errors from the survey are compared with the allowable tolerances in the current domestic and foreign specifications.
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