Main sewage treatment plant

We supported the reconstruction and expansion of the main sewage treatment plant in Vienna, from stakeout work to height markers for excavation support and construction phases. This involved monitoring the basins and septic tanks for settlements and tilting. The greatest challenge was: optimally equipping the individual structures with sensors without interfering with ongoing operation.

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DiMoSy - Main sewage treatment plant, Vienna | AT


DiMoSy - Main sewage treatment plant, Vienna | AT


  • Field of activity: Geomonitoring
  • Location: Vienna | AT
  • Project period: 2015-2017
  • Client: Gebrüder Haider Bau GmbH
  • Tachymeters used: Leica TM 50
  • Number of tachymeter measuring points: 56
  • Number of hose leveling instruments: 30
  • Measuring interval: Hourly to daily


  • Construction work monitoring using digital hose leveling instruments and tachymeters
  • Alarm plan
  • Network measurements
  • Settlement measurements
  • Planning reviews
  • Stakeout work

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