Spectra Precision Survey Pro v4.5 Ranger User Manual - Manual (Page 107)

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DTM Stakeout
The Stake DTM routine allows you to stake an area and get cut/fill
information between the point being staked and a reference DTM
surface at the same horizontal coordinates. You can also obtain
volume information between the surface being staked and a specified
reference elevation or the reference DTM surface.
Reference DTM Surface
DTM Stakeout requires a DTM surface that defines the reference
elevations for the area that you plan to stake. There are three ways to
define the reference surface:
• A DXF file that contains a triangulated irregular network
(TIN).
• A digital terrain model (DTM) file.
• A separate layer in the current job containing several points
on the reference surface.
Survey Pro will use any of these three methods to compute the
elevation information at any location within the boundaries of the
reference DTM surface.
TDS ForeSight can be used to create a DXF file containing the correct
information from a JOB file. ForeSight provides several options
when exporting a DXF file and all the options will include the
required 3D Face, or TIN information.
Both TDS ForeSight and Survey Link will export a DTM file from a
DXF file.
Note: The speed performance of the Stake DTM routine is enhanced
when using a DTM file as opposed to a DXF file.