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Data Files and Formats
General Guide to RoadPlus - 4.0.0en
Data Files and Formats
As mentioned in the chapter "Design Elements", a road
surface is described by three different design elements -
horizontal alignment, vertical alignment and cross section.
RoadPlus reads the elements of each of these components
from individual data files that are in the Leica GSI file format.
In addition, a file can be created for entering cross-section
stations for specific locations such as points needed for
staking of superelevation points. Furthermore, if station
equations are needed, RoadPlus will read a file created for
station equations and apply the appropriate corrections.
Since all RoadPlus project files are in GSI format, the com-
mon extensions is .gsi, however they are distinguished by
three letter file name prefixes which define the file type and
must be used when creating the files. The question marks in
the example file names may be replaced with any DOS
permitted file name character.
Horizontal Alignment File
ALN?????.GSI
mandatory
Vertical Alignment File
PRF?????.GSI
optional
Cross Section (Template) File
CRS?????.GSI
optional
Cross Section Assignment File STA?????.GSI
optional
Station Equation File
EQN?????.GSI
optional