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28 floors without secondary ventilation pipe Residential high-rise DS 90 in Vienna (AT)

The striking residential high-rise DS 90 with its 262 flats and 120 serviced apartments, is located in the new Nordwestbahnhof quarter of Vienna.

The S+B Group is managing the project, constructing a prestigious building here for new owner Greystar.

The entire building will be low-energy construction. The building will be heated and cooled by thermally active floor slabs. Photovoltaics on the roof will produce part of the electricity required.

This project marked the first use of the highly sound-insulated Geberit Silent-Pro SuperTube drainage system , which does not require bypasses.

Project overview 

Residential high-rise with 28 floors icon
Residential high-rise with 28 floors

The building with 382 residential units on 28 floors places additional demands on the drainage system.

Geberit Silent-Pro SuperTube as the solution icon
Geberit Silent-Pro SuperTube as the solution

Thanks to the SuperTube technology, the drainage stack could be installed in a space-saving manner. The highly sound-insulating pipes ensure a quiet living space.

Only one stack per duct icon
Only one stack per duct

Only one waste water line is required per duct, which drains all the bathrooms and toilets connected to it. The secondary ventilation pipe is not needed.

Room height gains icon
Room height gains

1.5 metres less room height in the area of the collector pipes with connection to the sewer pipe in the entrance area.

Customer testimonial 

Andreas Keck, S+B Group Project Manager

“With a conventional drainage system, up to 1.5 metres of room height would have been lost in the entrance area due to the required inclination of the discharge pipe. Thanks to Geberit Silent-Pro SuperTube, this pipe can now run horizontally for up to six metres and only then requires a slope.”

Andreas Keck, S+B Group Project Manager

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The brief Drainage of a residential high-rise building

The colourful DS 90 residential building in the middle of Vienna, with 382 residential units

Due to the the number of floors and the height, the drainage of the DS 90 residential high-rise building placed various challenging demands on the waste water technology:

  • High drainage capacity due to the many bathrooms and WCs.
  • An additional bypass line due to the prohibited connection zones in the area of the direction change.
  • A slope for the collector pipes

With a conventional drainage system the realisation of these high standards would have been almost impossible.

The Geberit solution Geberit Silent-Pro SuperTube

Geberit Silent-Pro SuperTube for the discharge pipe

Together with the contractor ESW Gebäudetechnik, the S+B Group opted for the new Geberit Silent-Pro SuperTube drainage system. It offers some unbeatable advantages, especially in multi-floor residential buildings:

  • Despite the height of the building and the number of residential units, only one stack is needed per duct, with no parallel ventilation pipe.
  • In the area of the direction change, there is no need for a bypass for the prohibited connection zone.
  • With the horizontal pipes of up to 6 metres without a slope, 1.5 metres of room height can be saved in the area of the collector pipes.
  • Easier planning of the drainage system
  • Easy installation

Geberit Silent-Pro SuperTube is highly sound-insulating and thus fulfils the standardised specifications for sound insulation.

Geberit Silent-Pro SuperTube stack in the duct
DS 90 residential high-rise: Geberit Silent-Pro Carve was used for the connections to the WCs and bathrooms on each floor.
DS 90 residential high-rise: collector pipes in the entrance area
The horizontal pipelines can be installed up to 6 metres without a slope. This saved 1.5 metres of room height.
DS 90 residential high-rise: Geberit Silent-Pro BottomTurn in the area of the direction change
Instead of two 45° bends with a transition piece, the Geberit Silent-Pro BottomTurn is used in the area of the direction change.

Facts & figures about the project

Geberit know-how

Geberit products used
  • Geberit Silent-Pro SuperTube
Geberit Silent-Pro SuperTube for apartment buildings
Geberit Silent-Pro SuperTube

Geberit Silent-pro SuperTube is the space saving drainage system for apartment buildings and terraced houses with strict sound insulation requirements. SuperTube fittings are available in the following diametersand corresponding discharge capacities: 6L/s at d110 and 4.5L/s at d90

More customer projects  with Geberit SuperTube

Amanora Park Town, India

India’s first township project combines luxury flats, schools, shops and restaurants, and functions like a village in the big city. SuperTube helps with complex floor construction thanks to its high drainage capacity.

Hotel Sky, Cape Town

Once an office building, this 28-floor high-rise building is now a hotel with over 500 rooms. The change of use requires a higher drainage capacity. But the duct size is fixed – so a space-saving system is needed: Geberit SuperTube.

Lighthouse 2.0., Denmark

Denmark’s tallest residential high-rise is 142 metres high, and has 45 floors and 400 flats. Such a building would require drainage pipes with enormously large diameters – but Geberit SuperTube allows for significantly smaller dimensions. And without a ventilation pipe, the system can also be installed much more quickly.