A commonly used setting out procedure is the profile board method. A series of boards that show the exact level 1 meter above the completed construction level are placed at intervals along the proposed line of the road. A profile board with a fixed height, called the traveler, is used for controlling the excavated levels between these profile boards. By placing the traveler in the sight-line between two level boards, it can be seen whether or not the excavation has been carried out to correct levels and adjusted accordingly.
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