Note: you will need the “LGO Surfaces & Volumes calculations” license (Art: 778087) to perform the following – please contact sales@sccssurvey.co.uk for pricing info.
1) Import a list of 3D points into a Project (from Excel as a CSV, or from observed data from TPS/GNSS).
2) In the ‘Surfaces’ tab along the bottom of the screen, right-click in the top-left window and create a new surface.
3) In the ‘Points’ tab, highlight all the coordinates, right-click, and “Assign to surface” (that which you just created).
The points will then appear as a triangulated map in the Surfaces tab.
To trim out triangles which are outside the site boundary, click on the triangle (it will turn orange), right-click and ‘Exclude”. We would rather fall off the DTM than use an incorrectly interpolated height.
By selecting the 3D view, you can rotate the surface to give you some perspective on the shape of the plane.
Once trimmed, you can add a base ‘Level’ to view areas and volumes (the default is 0.000m).
Once you are finished adjusting the boundary and have noted the areas/volumes, you can export the surface to System 1200 and Viva instruments.
“Export surfaces as DTM job…” will create a set of DBX files, to be pasted into the DBX folder on a Card, to be used with the ‘DTM Stakeout’ application.
Alternatively, a triangulated DXF can be created. On Viva instruments, such as the CS15 controller, having the background DXF in the map tab, whilst using the DTM, can provide situational awareness relatively to the model.
