Prestressed concrete cylindrical pipe (PCCP) has been widely used for the distribution of water in communal,\r\nindustrial, and agricultural systems for a long time. However, as it deteriorates, structural failures have been experienced.\r\nReplacing the entire existing PCCP with partial damages is not an economical method. Currently, as a cost effective repairing\r\nmethod, a new approach using fiber reinforced polymer (FRP) has been applied. A new design procedure of this method was\r\nproposed considering various kinds of loading condition. However, it is not easy to apply this method for design purpose due to its\r\ncomplex procedures. The objective of this study is to provide a new design criteria and process for PCCP rehabilitation with FRP.\r\nThrough this method, the appropriate quantities of FRP layers will be decided after examining of limit states of deteriorated PCCP.\r\nFor this purpose, two deterioration conditions are assumed; fully deteriorated and partially deteriorated. Different limit states for\r\neach case are applied to decide the quantities of attached FRP. The concept of ââ?¬Ë?ââ?¬Ë?margin of safetyââ?¬â?¢Ã¢â?¬â?¢ is used to judge whether the\r\ndesign results are within the optimal ranges to satisfy all limit states.
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