Abstract
This study aims at proposing the new evaluation method of strength deterioration for silt curtain. As strength deterioration is inevitable for silt curtain and there exist many uncertain factors regarding strength of silt curtain, present design method evaluates stregth deterioration on the very conservative side especially for reuse curtain.
Authors collected 315 datum on strength deterioration for silt curtain from experiments after construction works and field experiment results. Authors proposed an equation for the evaluation of strength deterioration for silt curtain based on the statistical data analysis.