Merging DTM Surface
The merging of DTM surfaces is a powerful function that allows the user to merge two DTM surfaces.
The function will:
- Copy all the points on that design surface into the relevant ground surface
- Add the lines that describe terrace and banks to the ground surface
- Connect the bank top and toe points into the terrain model
- Delete all the ground points that previously fell under that terrace and it's banks
Note that after this function is complete the original terrace will still exist, even though it will have been merged into either the ground or the merge surface. Previous versions of the program would remove the specified terrace after the merge.
Naming the DTM surfaces:
Using multiple DTM surfaces can become confusing if the surfaces are not named correctly.
Terrain Mode
Settings Menu › Display Settings
Merging the DTM surfaces:
Terrain Mode
Terrain Menu › Merge DTM
Always select a merged surface, so that the original surfaces remain, in case there are changes that have to be made to the ground and terrace surface. Once the merge is complete, run the Validate Model function to check the triangulation on the merged surface.
Once the surfaces are merged, run Validate Model to scan the model. This will check for any problems with the triangulation on the merged surface.
Terrain Mode
Model Menu › Validate Model
Select the surface to validate (new merged surface).
If there any any errors with the triangulation an error will appear.
Correct the error and then re-run the validation. If there are no more errors the site will be successfully validated.
Once validated SAVE THE PROJECT
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