2.0

Creating Existing Ground Cross Sections
261
6 Use the following check boxes to specify additional sampling parameters:
n
PCs/PTs: Controls whether a section is cut at the beginning and end of all
circular curves.
n
TS-SCs/CS-STs: Controls whether a section is cut at the beginning and end
of all spiral curves.
n
Alignment start: Controls whether a section is cut at the beginning station
of an alignment.
n
Alignment end: Controls whether a section is cut at the end station of an
alignment.
n
Save sample list: Controls whether a file with an .smp extension is created
for the current alignment when you use the Sample From Surface command.
This file is placed in the align\<align name> subfolder of the project folder.
The file contains the station values of all cross sections that were sampled by
the Sample From Surface command. Use this file to sample an alignment
again without re-entering all section stations when using the Add specific
stations option.
n
Read sample list: Controls whether station values are read from the
{Alignment Name} .smp file in the align <align name> subfolder of the
project folder. If you select this option, then it overrides any other selections
in the Section Sampling Settings dialog box except Add Specific Station
selection. If you select this option and the {Alignment Name} .smp file does
not exist, then the command displays a message stating that the file cannot
be opened for reading. The command then continues sampling.
n
Add specific stations: Controls manual entry of additional station values for
section cutting. If you select this option, then the command prompts for the
critical point or station after the sample range has been specified. At the
default prompt, you can enter the station values or you can type Point to
switch to the point option, and then select critical points on the plan view of
the alignment. The station for each selected point is calculated. Object snaps
are recommended when selecting points you do not have to enter the critical
stations in sequential order. They are automatically sorted.
7 Under Sample Lines, you can select the Import check box to import sample
lines.
Importing cross section sample lines is useful to check where the section
sampling may run off the surface.
8 In the Layer box, type the layer name for the sample lines.
9 Click OK.