Spectra Precision FAST Survey Reference Manual - Manual (Page 226)

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ROAD
This chapter provides information on using the commands from the Road menu.
Centerline Editor
This command allows you to enter new centerlines, as well as recall and edit existing centerline files. Centerline files in
FAST Survey are ASCII files with a .CL extension. When the routine is selected, a dialog will appear in which you can
load existing centerlines or begin entry of new centerline information.
 Clear
: This icon, at the top of the screen, clears out all information in the dialog in preparation for entering a
new centerline. With no centerline file loaded or saved yet, the file name in the upper left is displayed as “None.”
 Start Pt ID
: If the centerline starts on a point number that exists in your current coordinate (.crd) file, you can
enter the point number here, and it will recall and display the starting coordinates. The point can also be selected
from the list or map using the appropriate icons.
 Start Station
: You must enter the starting station for the centerline. (“Station” is the same as the European term
“Chainage.”) Many surveyors and engineers prefer not to start centerlines at station 0. If the job backs up or needs
to start further back along the centerline, this method will leave you with negative stationing. There are three
centerline “forms” as set in Job Settings, Units. A starting station of 1500 can be displayed as 1+500 (metric,
US-style, showing whole kilometers left of the “+”), as 1500.000 (pure decimal chainage, common to Europe), and
as 15+00 (feet, US-style, sometimes also used on metric roads in Canada), often referred to as “station 15 plus 00”.
In all cases, you would enter it as 1500, but it would display in the correct format after pressing Enter. For
example, you would see 1+500.0000 if configured to kilometers. The program will also accept use of the “+” in the
entry of the station, and will convert to the configured form after you press Enter.
 Northing, Easting
: If the northing and easting are not recalled from a starting point number, you will need to enter