This command creates 3D polylines from a section (.SCT) file. Besides the section file, a centerline polyline, centerline file or section alignment (.MXS) file must be specified to define the plan view location of the 3D polylines. The elevations for the 3D polylines come from the section file. These 3D polylines can then be used by other Carlson routines to create surface models.
Typically, the 3D polylines are drawn as cross-sections perpendicular to the centerline at each station. When using a polyline centerline instead of the .MXS file, there is an option to draw by connecting similar descriptions to make 3D polylines parallel to the centerline. For example, if the section file has descriptions for each section point then you can draw 3D polylines for EP, SHD, TIE, etc.
Layer Name for 3D Polylines <3DXSEC>:
press Enter
Align sections by MXS file, centerline file or polyline
[MXS/Centerline/<Polyline>]?
press Enter
Choose Section File to ProcessSelect the .sct file
Range of stations: 1.14 to 1605.25
Enter the starting station to process <1.14>:
press Enter
Enter the ending station to process <1605.25>:
press Enter
Draw sections or offset polylines by description
[<Section>/Offset]?
press Enter
Type of centerline [<ROadway>/RAilroad]?
press Enter.This option chooses between roadway and railroad
methods for stationing along curves.
Select centerline polyline:
pick the polyline
Enter the centerline starting station <0.0>:
press Enter
Draw perimeter of sections [Yes/<No>]?
YThis option will connect all the left most offsets and
right most offsets together with a 3D polyline.
Use reference profile to interpolate between sections
[<Yes>/No]?
N for no.This option will prompt for a profile to use for
interpolating elevations along the 3D polylines between the section
stations. This improves the accuracy when the profile goes through
vertical curves. Without the profile, the 3D polyline elevations
will be straightline interpolated between the sections.
Draw all template ids or specific ids and offsets
[All/<Specific>]?
press Enter for Specific
Enter Offset or Description to draw:
EP
Keyboard Command: scto3dp
Prerequisite:A section (.SCT) file