Spectra Precision FAST Survey Reference Manual - Manual (Page 330)

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Referring to the graphic below, which illustrates a stockpile, the “Final” point range could be defined as ALL points,
and the “Original” point range could be defined as the base points of the stockpile or points 1-15.
So using the settings above in the Volume routine, you would verify your two point ranges, then click OK. For
example, the “Original” surface point range would be set as follows using the “Define” button for “Original” prior to
clicking OK.
Clicking OK moves forward to a shrink and swell factor screen. Only if you are set to English units do you get the
option for tons based on a density factor. In metric units, the volume is presented in cubic meters. You can create a new
surface TIN file that merges the original surface with the final surface within the selected or assumed perimeter. If you
do not have an inclusion perimeter, then the largest "convex" figure defined by all final surface points and entities
becomes the default perimeter.
Clicking OK continues on to the Volume Report.