Tolerances - TSCAN1

9.4 Tolerances

In this option, the user can set the tolerances for surveying and setting out options.

Longitudinal, Transverse and Vertical tolerances are used for setting out points and setting out road surface. For setting out rock bolts only the vertical one is used. Below these values the points are considered to be set out.

The Station tolerance is used for setting out, surveying and checking cross-sections. If the station of a point measured is within the interval [TheoreticalStation -- StationTolerance, TheoreticalStation + StationTolerance], this point is considered to be a point of cross-section of the theoretical station.

The 3D Distance tolerance is used for setting out the front of the tunnel. A point is considered to be set out if the distance between the theoretical point on measured station and measured point is below this value.