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A7 overhead noise barrier Bindermichl - Cover-formwork LZ11
Slab formwork with integrated pile cap formwork
Substructure: Doka heavy-duty supporting system SL-1
Top structure: WU220-profiles + Timber beam formwork FF20 (by site)
Project data
Type of building: Tunnel
Method: Top cover construction method
Location: Linz, Austria
Formwork system: Doka large-area formwork Top 50
Duration of insert: 3,5 months
Building data
Purpose of the tunnel: Noise protection project
Section: rectangular
inside width (m): 15,00 m
inside height (m): 3,00 m
Formed tunnel length: 200 m
Steps: 6
Additional info
  • 500 m² slab per pouring step were formed. Because of the small tunnel radii the formwork was divided lengthwise into two smaller formwork sets.
  • The carriage is 2 x 16.5 m long and consits of four length beams and 14 cross-framework beams. The construction weighs 165 tons.
Contractor
ARGE A7 Betonbau (Strabag, Alpine Mayreder, Porr, Held & Franke)
Contact: Mr. Ecker, Mr. Knollmüller
Formwork design
Organisation in Country: Österreichische Doka - Niederlassung Oberösterreich
Mr. Martin Zabern (Project Manager)

Department Amstetten: Tunnel Expertise Centre
Mr. Christian Heuböck (Head of Tunnel Expertise Centre)
  E-Mail: tunnel@doka.com
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products in use
Load-bearing tower SL-1
Doka large-area formwork Top 50