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As part of maintening of the air ducts of the Croix Rousse tunnel, one of the oldest city tunnels in France (started in 1939, completed in 1952), 3DReshaper was used to do the 3D meshing, best shape extraction and section calculation.
The ventilation system is in this case transversal : the fresh air goes down the lower part of the tunnel and the fouled air is aspirated in the upper part (air vents are located every 1.28 m).
Digitization was performed with a Leica HDS and a Riegl 3D scanners. |