This command is used to define a segment file (extension .SEG). This file will include all files generated over the course of our project associated with each horizontal alignment, in order to integrate all the information and avoid having to request each part individually in all the commands required. It is comprised of the following elements:
Horizontal alignment (extension .EJE): the most important file, as all the other files are associated with this one. Obligatory.
Longitudinal (extension .LON): contains the longitudinal profile associated with the horizontal alignment. Obligatory.
Cross-sections (extension .TRA): contains the cross-section profiles associated with the horizontal alignment. It is not essential to draw complete longitudinal profiles, although it is to draw cross-section profiles and cubic measurement lists.
Grade line (extension .RAS): contains the vertical alignment associated with the horizontal alignment and the longitudinal profile. It is necessary both for the complete longitudinal profile drawing and for the calculation and drawing of the cross-section profiles.
Widenings (extension .SOB): contains the shoulders associated with a horizontal alignment, if they exist. Optional.
Sections (extension .SCC): contains the section definition and assignment across the horizontal alignment. These are necessary to calculate and draw the cross-section profiles.
Superelevations (extension .PER): contains the superelevations associated with a horizontal alignment, if they exist. Optional.
Blocks (extension .BLK): contains the block assignment definitions to represent in the drawing, of the roads or the profiles. Optional.
Skewed Cross-sections (extension .TRE): contains the skewed cross-sections definitions that could be generated from the horizontal alignment. Optional.
In order to facilitate its use, the content of each of these files is copied to the segment file in binary format, meaning, they are not linked to the original files but are embedded in them. Therefore, if any changes are made to one of these files using the different options the command provides, the original file will not change, though once we validate this dialogue box, the command will notify us of said circumstances and we can update the files that were originally imported with the current information.
After activating it the MDT command requests a segment file, which can be a new file or an already-existing file. Once it is selected a dialog box like the one below will appear, which details the characteristics of the segment, meaning, the elements or files it contains. The following is a description of the characteristics of each of the controls in the dialog box.
Three differentiated sections can be distinguished.
Components: Refers to each one of the linked files.
Options: Different options for the segment for once the different segment elements have been imported.
Preview: Drawing representing the element selected in the section Components.
TcpMDT
