Cross-section (Menu - Ground Level)

1. Get Elevation

 The method to get ground elevations is two. One gets from TIN, the other gets from the main highway. In the latter case, the current alignment is link-highway.

2. Get Layers
 The command is to get elevation of layers.

3. Get GL / Layer

- By Drawing-1 : reading entities in current drawing, get elevations of ground level and layers. How to distinguish the entities are shown in the table below.

	Layer
ground level	LAYER_GL
ripper rock	LAYER_RR
soft rock	LAYER_BR1
Hard rock	LAYER_BR2

 - By Drawing-2 : reading the ground level entity, copy to ripper rock, soft rock and hard rock by the depths of vertical GL and layers.

4. Delete GL 

5. Delete Layers

6. Edit Elevation

 if you have route survey, generally edit the elevation.

- Left : on the left side of center

- Right : on the right side of center

- STA : station to edit the elevation

- Previous : move previous station 

- Next : move next station

- Search : search station and move to it.

- Type : select the type to edit elevations

• Absolute Elevation : edit the elevation
• Relative Elevation : edit the height from previous elevation to current elevation
• Center base : edit the height  from center elevation on horizontal alignment to current elevation 

- Select : select a entity in current drawing

- Cal GL by TIN : calculate the elevations by TIN

Absolute Elevation

Relative Elevation

Center Base