Abstract
In this study, the surveys and the interviews have been conducted to prepare measures for structure crack, with analyzing the cause of the structure crack, which appeared on the structures. In addition, we have intended to suggest the proposals for enhancing the system to reduce the crack and to improve the quality of the reinforced concrete structures by analyzing the practices and the system of structure supervision. The proposed conclusion is shown as following. 1) Consolidate the ordinances related to construction supervision 2) Importance on design supervision, such as architecture, structure, and construction 3) Importance on construction supervision 4) New establishment of regulations related to structure supervision.