Employer
Federal roads office FEDRO, CH-4800 Zofingen
Time of Completion
02.2014 – 11.2017
Execution of the Work
ARGE SiSto Sachseln
Consortium Partners
Marti Tunnel AG, CH-3302 Moosseedorf
Marti Bauunternehmung AG, CH-6002 Lucern
Lead Company – Technical and Commercial Lead
Marti Tunnel AG, CH-3302 Moosseedorf
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Scope of the Works
Sachseln Safety Gallery, A8 Canton of Obwalden
Work description
Underground works:
- Tunnel L = 5'030 m Ø 4.20 m
hard rock TBM with gripper
- Cross cuts A = 12 m² 20 pcs
drill and blast
shotcrete reinforced
- Rock bolts 13'500 pcs
- Reinforcing mesh 160'500 m²
- Steel profile 270 t
- Concrete 8'000 m³
- Excavation total 242'500 t
Aeration tunnel Altbiel
- Length 135 m
- Slope 7.6 - 25.9 %
- Cross section 14.7 m²
Special feature
Outbreak with 4.5 m distance to the busy national road
N08 in the MUF and SPV
Surface works:
- Pit with nailed wall 2 x 270 m²
- Technical buildings 2 pcs
- Ventilation Saccardo
- Nailed wall 2 x 270 m²
- Bolts 2 x 115 pcs
- Concrete 2 x 1'200 m³
- Steel reinforcement 2 x 280 t
Contact
Marti Tunnel AG
Seedorffeldstrasse 21
CH-3302 Moosseedorf
Tel. +41 31 388 75 10
tunnel@martiag.ch
