Spectra Precision Survey Pro v4.5 Ranger User Manual User Manual

Page 109

DTM Stakeout

4. The name entered in the Store Point field will be used for the first

point that is stored. Future points will be stored with the next
available point names. Enter the rod height in the HR field.

5. You have the option of selecting a

centerline to get offset and stationing

information for the staked points.
Checking the With C.L. checkbox and then
tapping the Choose Centerline button will
open the Select Line screen where you can

select an existing polyline or alignment
that defines a centerline. The selected line

will also be displayed graphically in the

DTM Shot screen, described later.

6. When the Generate DTM with Staked Points

checkbox is checked, a DTM surface will be generated from the
points stored on the selected DTM layer (not the reference DTM

layer optionally chosen in the first screen). Any points staked

and stored will also be added to this layer and the DTM will be
updated accordingly.

Selecting the Generate DTM with Staked Points option also allows
you to view this surface from the 3D View screen while taking

shots and it allows you to get live cut / fill and volume information
between this surface and the reference DTM surface selected in

the first screen. If unchecked, the 3D View is unavailable; no

volumes will be computed; and cut / fill information is not
displayed, but is still stored to the raw data file.

When you first check the Generate DTM

with Staked Points box, you must also tap
the Setup / View DTM… button. This will
open the Setup DTM 3D screen, which is
used to select your layers, and optionally

select any break lines, and a boundary.