- Animateur: Heinz Ehrbar (Switzerland)
- Vice-Animateur: Robert Galler (Austria)
- Tutor: Markus Thewes (Germany)
- Report presented by Heinz Ehrbar.
The meeting on Sunday gathered 14 delegates from 11 nations and on Monday 11 delegates from 10 nations.
The WG publications (existing and planned) are:
| N° | Title | Year of publication |
|---|---|---|
| 1 | Conventional Tunnelling - General Report of the ITA WG 19 | 19 Published in 2009 |
| 2 | Guidelines on Special Aspects in Contracts for Conventional Tunnelling | Planned in 2012/2013 |
| 3 | Guidelines on the selection of excavation methods (together with WG 14) | Planned in 2014 (?) |
| 4 | Guidelines on Monitoring in Conventional Tunnelling | After 2014? |
Aim of the meeting in 2012
- Final step forward in the elaboration of the guidelines on special contractual aspects
- Future activities of WG 19
- Working schedule 2012/2013
Presentations
- Austrian guidelines on monitoring in conventional tunnelling, by Österreichische Gesellschaft für Geomechanik
- Mechanisation in Conventional Tunnelling, by Swiss tunnel holding
- "Guidelines on contractual aspects of conventional tunnelling" (4th draft), May 18, 2012, WG 19 ITA Report.
Contents:- Introduction
- 1 Procedures and Responsibilities
- 2 Construction Contract
- 3 Time Schedule
- 4 Risk Allocation
- 5 Resources
- 6 Payment
- 6.1 Structure of the bill of quantities
- 6.2 Excavation and support
- 6.2.1 Excavation
- 6.2.2 Support
- 6.2.3 Overbreak
- 6.3 Compensation for hindrances
- 6.4 Time dependent costs
- 6.5 Auxiliary measures
- 7 Conclusions
- 8 References
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Next project in close collaboration with WG 14:
"Guidelines on the selection of excavation methods"
Planned activities
