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Project and structural planning for the new construction of two emergency tunnels

Right now, the Lämmerbuckeltunnel is the oldest operating motorway tunnel in Germany, which is subject to the guideline for the fixture and the service of street tunnels (RABT 2006).

With accord to the requirements of the RABT 2006, for every tunnel with a length of more than 400 m, regularly, emergency exits have to be arranged at intervals of max. 300 m. For this reason, the Lämmerbuckeltunnel is equipped with two emergency exits that are leading to the ground level, virtually parallel to the Lämmerbuckeltunnel.

The emergency tunnels are processed both via cut-and-cover and closed construction. The length and depth of the precut, as well as the length of the cut-and-cover and closed construction result from the topographic conditions.

Starting from each of the portals of the emergency tunnels, two access roads within walking distance lead to the installation surface of the emergency vehicles.

ZPP is commissioned with project planning in section 3 - civil engineering structures for the service phases 1 to 4 and 6 (basic evaluation, pre-planning, draft planning, approval planning and preparation of the contract awarding), as well as the project planning in section 4 - traffic installations for the service phases 2 to 6 (pre-planning, draft planning, approval planning, execution planning and preparation of the contract awarding), according to HOAI (Official Scale of Fees for Services by Architects and Engineers). The specialist planning in section 1 - structural planning for the service phases 1 to 3 and 6 (basic evaluation, pre-planning, draft planning and preparation of the contract awarding) is also part of the service.

Regierungspräsidium Stuttgart
Period of service
2013 - 2017
Wiesensteig, Germany
  • Planning