Toronto
| Participants | |
|---|---|
| Owner | Metrolinx Agency of Ontario being responsible for improvement and coordination and integration of all modes of transportation in the Greater Toronto and Hamilton Area |
| Constractor | Tunnel Toronto Partners, capital joint venture of EllisDon Capital Inc. and Strabag Inc. |
| Location of the Job Site | Toronto, Ontario |
| Tender | |
| Short Description of Job | Constructing of a twin tunnel, less than 3 m underneath Highways 401 and 409 – all without disrupting the 21 live traffic lanes directly above. It is one of the busiest sections of highway in North America. |
| Specifications for Tenders | Installation of the twin tunnel in trenchless technology without interference and disturbance of traffic. |
| Alternative Methods proposed by the Constructor | Installation of a pipe roof canopy underneath Highways 401 and 409 using 813 mm steel pipes with drive lengths of 25-72 m. In total 4.2 km of steel pipes to be installed. |
| Ground conditions | |
| Described Ground in the Ground Report | Sand and Clay with fine to medium particles, trace of gravel (subrounded), material is moist and has a brown colour. |
| Encountered Soils | Man made engineered backfill Glacial Till |
| Depth of Coverage | 1.5 metres to 3.5 metres |
| Accuracy | 10 mm to 50 mm |
| Time for Job or Production Rate | 2 m/h including welding procedure |
| Driving Length | 25 m - 72 m |
| Any other Specifications | Guided auger boring as dead end drilling using the pilot tube method. Pilot rods have been washed over afterwards with special hollow stem augers inside 813 mm steel pipes |
Bohrtec Gesellschaft für Bohrtechnologie mbH
Konrad-Zuse-Straße 24
D - 52477 Alsdorf
+49 (0) 2404 9881 - 0
+49 (0) 2404 9881 - 10
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