Spectra Precision Survey Pro v4.6 Recon and Nomad User Manual - Manual (Page 124)

User’s Manual – Conventional Mode
114
Select any Break Lines (optional)
Break lines are polylines that define any linear object on the surface
you are staking such as a trench, a fence, or the face of a cliff. No TIN
will pass through a break line when generating the DTM surface. If a
boundary is selected, the entire break line must fall inside the
boundary. If any part of a break line touches the boundary, the break
line is invalid.
10. To select a break line, tap the Breaklines… button to
open the Add/Edit Break lines screen. If any break
lines have already been selected, they will be listed
here.
a. To add an existing break line, tap the Add
Existing… button. This will display all the
polylines in the current job. Select the desired
polyline and tap . This will move the selected
polyline to the (non-reference) DTM layer.
b. When finished adding break lines, tap (Close)
to return to the Setup DTM 3D screen.
11. When you return to the Setup DTM 3D screen, the
Points… button will open the Points on DTM Layer
screen where the points on the DTM layer can be
viewed, new points can be imported, and existing points can be
deleted (moved to the Auxiliary layer). The 3D View… button
will open the 3D View screen where the DTM surface for the
points on the DTM layer can be viewed from any angle.
12. This completes the Stake DTM set up procedure and you are now
ready to stake points. Tap (Close) from the Setup DTM 3D
screen to return to the Stake DTM screen.