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Spectra Precision FAST Survey Reference Manual User Manual

Page 212

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The coordinates from which to project can be entered in three ways:

By point number

By entering the coordinate values

By taking a GPS or total station reading

The station, offset, and vertical difference of the point is then calculated, and the Intersect button (see the above figure)

will calculate the projected perpendicular intersect point on the baseline. This Intersect can also be staked out using the

Stake button.

You must first define the baseline. You can define the baseline by one of the following methods:

Define Line:

Select two points to define the line.

Define Alignment:

Select a predefined centerline file (.cl file), graphically pick a polyline or enter a sequence of

points.

Define Arc (3 Points):

Select three points on the arc.

Define Arc (PC, PT, Value):

Select the start and end points of the arc and enter the radius length.

If you choose two points, you must then define the line in the Point Projection dialog box as shown below.