Spectra Precision Survey Pro CE v3.6 User Manual - Manual (Page 93)

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DTM Stakeout
The Stake DTM routine allows you to stake an area and get cut, fill,
and volume information between the surface being staked and a
reference DTM surface. You can also obtain volume information
between the surface being staked and a specified reference elevation.
Create a DTM or DXF File
DTM Stakeout requires either a DXF file that contains a triangulated
irregular network (TIN), or a digital terrain model (DTM) file for the
area that you plan to stake, which is typically created from a previous
topo job. Either of these files allows Survey Pro to compute the
elevation information at every location within the boundary of the
original topo.
TDS ForeSight can be used to create a DXF file containing the correct
information from a JOB file. It provides several options for the
information that is written to the DXF file, but all the options will
include the required 3-D Face, or TIN information when exporting to
a DXF file. 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.