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Convert Final Road Design Into DTM Surface
This Tech Tip explains how to convert the final road
levels into a DTM surface. |
Converting the Road
Alignment Menu › Horizontal › Cross Sections
› Translate

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Chainage - Start and Stop |
Enter the first and last chainages of the
portion of the horizontal alignment to be
processed. |
|
Transform road layer |
Select
the road layer containing the cross sections to
be translated. |
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Store to terrain surface |
Select the surface on which the generated points
should be stored. |
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Suffix to add to names |
Enter
a single character suffix that will be added to
the names of all generated points. This helps in
identifying points at a later stage. |
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Translate - Batters only |
Select this option to translate only the first
and last two points in each section. |
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Translate - By offset |
Select
this option (and enter the Left and Right
offsets) to translate points between specified
offsets. |
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Translate - By point location code |
Select this option (and enter the Left and Right
PLC codes) to translate points between specified
points in the cross-section. |
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Create lines on section as: |
Check
this option and select either the Break lines
option or the Feature lines option to have lines
automatically generated between the translated
points. The generated lines automatically delete
any crossing lines in the surface to which the
cross-section is being translated. |
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OK Button |
Click
this button to accept the current entries in the
dialog. |
|
Cancel Button |
Click
this button to cancel the function. |
Make sure the new road DTM is created in a surface
that contains no data, in this example the ground DTM
is in surface 1 and therefore the road DTM will be
created in surface 2.
Click OK to continue.
The road will now be converted into a DTM surface. The
original road design remains intact.
The new DTM surface can then be viewed in 3D.
View Road In 3D
Change to Terrain Mode.
Terrain Menu › 3D View › View

Select the correct surfaces, the base surface is the
ground DTM , the terrace surface is the road DTM .
Click OK to continue, the surfaces will
then be displayed in 3D. Various options are available
in each section of the 3D view module, press F1 for
detailed information.

Once the 3D view has been generated, different colours
can be specified for each surface.

Once the new colours have been selected, click on the
Apply button to view the changes.
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Last Updated:
July 26, 2007
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