TcpTunnelCAD
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4.1. Calculate Cross-Sections

This option calculates the cross-sections with the project’s points and horizontal and vertical alignments.
 
The cross-sections calculated are saved in the selected *.TRI file.
           
 
Initial station: Station from which measured points to be drawn are sought. The project’s alignment is indicated next to the initial station.
 
Final station: Station up to which measured points to be drawn are sought. The project’s alignment is indicated next to the final station.
 
Station interval: Value by which stations increase from the initial station indicated up to the final station.
 
Station tolerance: Station’s regression value. If the difference between a station analyzed for a point and a station on the theoretical list is less than this value, a point in the theoretical station profile is considered to which it is adjusted.
 
Minimum points distance: Minimum distance between two consecutive points of the profile.
 
Minimum points: Minimum number of points that a profile must contain.
 
Close cross-sections: After calculating each cross-sections, the program will join the final and the initial point to create a closed cross-section.  If the cross-section is open, the join between the ends will not be taken into account when calculating the surfaces.  If there is a closed theoretical cross-section, this option must be marked if one wants the surface area calculation to include the whole cross-section.
 
Include non-multiple stations: Initially, the file’s points are analyzed and grouped together by the closest station according to the tolerance indicated. These stations are then adjusted in accordance with the tolerance to the stations appearing on the list created according to the Station interval. By marking this box, one indicates that one wishes to take into account stations that have not been adjusted to any multiple of the initial station indicated in accordance with the Station interval.
 
Adjust to theoretical station: Uses the stations calculated with the interval and the initial and final stations instead of the stations calculated automatically.
 
Round stations: Round cross-section stations to the closest integer number.
 
Cross-sections center: This option allows one to set up the point which is used to sort the points of the profiles. If Auto option is selected, the point calculated is the center of the rectangle that encloses the profile points. Otherwise, horizontal and vertical alignments application points will be use. The program allows one to change those points entering a horizontal and vertical distance.
 
Cross-sections file: Cross-Sections file output, by default it will show cross-sections file project.