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Spectra Precision FAST Survey Reference Manual User Manual

Page 167

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Skew Angle of 20 degrees, as measured forward from the perpendicular (normal) offset.

Elevation:

This is the design elevation. If the defined geometry is 2D, then this option will be active.

Override Design:

This allows the user to override the design elevation of 3D geometry.

Off. Inc

: This is for entering an optional incremental offset along the line. This is a rarely used feature that would

trend the offsets away or in to the centerline.

Segment:

This defines the current segment of the alignment based on the entered station.

Cutsheet:

This shows the currently selected Alignment Cutsheet file.

Settings:

This icon takes you to the Job Settings that apply to alignment staking. See Job Settings (Stake) for

more details. Note that this is where you instruct the software to include and stop at critical alignment locations.

Stake Line/Arc (Point On Line)

The Point On Line option appears when Define Line or Define Alignments is selected with Stake Station Interval

clicked on. The options appear in the Stake Line (Interval) dialog. It offers a Perpendicular to Line method for total

stations and GPS. This method projects any shot onto the alignment perpendicular or radial in curves, and prompts for

the distance and direction to move to the alignment intersect point. However, only if you select Define Line as the

method to define the alignment and you are set to total stations, is there a "Find Intersect to Line" option, which enables

“line-of-sight” staking of lines. This is often used by surveyors who are setting line in tree lines, moving to gaps in the

trees for readings, then moving in-out along the line-of-sight and driving stakes when perfectly on line. It is useful for

any line or boundary staking, such as property lines, right-of-ways and construction lines. For GPS, only the

Perpendicular method is available.

Total Stations: The Offset to Line option is grayed out when the Find Intersect to Line method is selected and

available only when the Perpendicular option is chosen.

Total Stations, Define Line, Point On Line, Intersect to Line:

The Intersect Method is used to set line by moving in

or out at the current line of sight. A major application is setting line where the line is largely blocked by trees or

obstructions, and you must set the line in gaps where you do have a line of sight.