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Allows cross-sections to be surveyed along the length of the project’s alignment. A subgrade cross-section file must have been previously created or selected. A points file is also necessary to save all the observations made.

 

The data initially requested include the following:

 

 

 

Initial Sta.: Station from where the profile starts. The alignment’s initial station is displayed by default.

 

Final Sta.: Station at which the surveying of the profile ends. The alignment’s final station is displayed by default.

 

Station Interval: Value by which the station increases or decreases when the forward or back keys are clicked.

 

Left Width: Maximum width of the cross-section to the left of the alignment. If the displacement in relation to the alignment is greater than this value, a Beyond Displacement warning will be displayed. This should be a positive value.

 

Right Width: Maximum width of the cross-section to the right of the alignment. If the displacement in relation to the alignment is greater than this value, a Beyond Displacement warning will be displayed. This should be a positive value.

 

Tolerance: Station difference below which it is considered that the point observed belongs to the current station. For instance, for a tolerance of 0.5 meters and if points are being observed at station 10, a point projected onto the alignment that results being be in station 10.2 will be considered valid and will be automatically saved.

 

Request Code: If this option is activated, the program requests a code for each of the profile’s vertices. The points file will be used for storing the coordinates of the points read with the code SCP I, CrossSectionFileName, TheoreticalStation, Code for the first point, SCP, CrossSectionFileName, TheoreticalStation, Code for intermediate points.

 

Reference Cross section: A reference cross-section file can be selected using the … button. This file will set the station interval as well as the left-hand and right-hand width for each profile. The station limits will continue to be set by the values in the initial station and final station boxes.

 

Left and Right set the left-hand and right-hand additional widths for each theoretical profile obtained from the reference file.

 

If a reference file is selected, the values of Left and Right are not taken into account.

 

Current Alignment: Displays the project’s current alignment. The alignment file can be changed using the … button.

 

Once all these data are entered, the following screen is displayed:

 

 

 

The current station can be changed according to the interval set with the  buttons. One can also go directly to the closest station by using the option New Station from the context menu.

 

When the  button is clicked, the vertex corresponding to the current station is saved in the cross-section file, as are the point’s coordinates in the point files.

 

The current position of the GNSS receiver is displayed on the graphic drawing, as are the theoretical cross-sections (in black), the current file’s cross-sections (in red) and the cross-section currently selected (in blue).

 

The lower part of the screen shows forward and backward (Fwd. / Bcw.) movements to reach the theoretical profile, the offsetting (Off) in relation to the alignment, the measured height (Hgt.) and the current profile’s number of vertices (N.V.). If the tolerance entered is exceeded, a Beyond Tolerance warning is displayed. Likewise, a Beyond Offsetting warning is displayed if the user is offset from the alignment by a distance exceeding the values indicated in Width Left or Width Right (depending on whether the user is on the left or right of the alignment) or beyond the theoretical distance set by the reference file plus the additional width.