Usually the general construction civil engineering. Investors usually focus on considering the fund for construction as the core. Without considering the budget of the maintenance. Which often make structure lack of care and may be damaged. The costs escalated later. The purpose of this research is to study the risk assessment and the appropriateness of the cost for use. (initial capital plus maintenance). The structure of flood wall style sheet pile concrete. A cough (I-Walls) and form a protection barrier water (Embankment Dike) risk assessment from the assessment of the potential damage that can occur in the structure of each form. The parameters in assessment, including opportunity the level effect, easy care treatment and control / edit. The determination of the suitability of the initial cost can be obtained from the principle, calculated the cost of lifetime use (Life Cycle Cost) to analyze and summarize the money real capital before the start of the project that should bring the maintenance thinking? And if used with different values.