1. CI4678 Tunnel design using AutoCAD ® Civil 3D ®
Tomáš Lendvorský
AEC Solution Engineer - CHS Countries
Roland Klement
AEC Solution Engineer – Central Europe

2. Where do I come from?

3. Where do I come from?
Tugenden – virtues
Gewohnheiten – habits

4. Interesting facts Did you know?
The World's oldest underwater tunnel is rumored to be the Terelek kaya tunnel under Kizil river, in Turkey, estimated to be built more than years ago (possibly 5000)
The Delaware Aqueduct in New York is the longest tunnel, of any type, in the world at 137 km (85 mi), drilled through solid rock
The Seikan Tunnel in Japan is the longest undersea rail tunnel in the world at 53.9 km (33.5 mi), of which 23.3 km (14.5 mi) is under the sea
(source –

5. Alignment Alignment Creation Tools Fix, Floating, Free entities
Create offset Alignments
offset for Acad primitives
Export to LandXML, exchange settings

6. Profile Profile Creation Tools Create Master Alignment Profile view
Design profile
Create Superimposed Profile

7. Geological layers Geologists supplied written profile of each GL
Create Profile from file
Use Data Shortcuts
Create auxiliary Corridor

8. Data Shortcuts
Auxiliary objects – Corridor, Surface - will be created in separate drawings
Reduces drawing size
Keeps dynamic connection

9. Geological layers Borehole data available
Borehole importer: - import borehole data and create surfaces
Possibility to create GL, passing GL info
and following EG
Create surface from borehole data at Existing surface elevation (Top)
Create GL surface from borehole data (Geolog)
Create TIN Volume surface: Base surface=Geolog, Comparison surface=Top
Copy TIN Volume Surface to new surface (Diff)
Create TIN volume surface: Base surface=Diff, Comparison surface=EG

10. Subassembly From polyline
Create assembly
Create subassembly from polyline
Add Codes for Top and Bottom of the tunnel
Codes Set style (import codes define styles)

11. Subassembly Subassembly Composer
Recreate geometry in SAC
Dynamic Subassembly

12. Corridor Create Corridor Edit station range Create Corridor Surfaces
Drive on alignment
Correct corridor - Overhang Correction and Add as Breakline

13. Sample Lines and Section Views

14. Volumetric Calculation
Define different Materials
Use Subcriteria
Material Volume Table

15. Intersection of Tunnel and EG
Intersection of Tunnel and EG (portal)
Minimum Distance between Surfaces
Daylight 3D Polyline of both side of the tunnel
Top and Bottom surface

16. Construction pit Different methods to create pit
Define pit bottom elevations
Create Feature line
Surface Label
Grading Creation Tools

17. Method 1 From bottom Obtuse angle – rounded shape
Sharp angle – sharp shape

18. Method 2 From top Obtuse angle – sharp corner
Sharp angle – obtue corner

19. Method 3 Grading separatly each line Explode Acad command Chamfer
All corners sharp

20. Thank you!
Please fill survey

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