The composition and structure of flexible pavement consists of surface course, binder course, base course, subbase course, frost protection course, subgrade. Flexible pavements contain bitumen or asphalt layer as wearing course and supports loads through bearing. They have low flexural strength. ...
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Flexible pavement design by CBR method is used to determine the total thickness of pavement. Pavement design by CBR method recommended by California State of Highways and IRC are explained.