NEWS
31.03.2026

Apostelgasse St. Franziskus, Vienna – Building Physics & Structural Engineering for Existing Buildings

The school project on Apostelgasse is currently in a critical phase: The bidding process is underway, and construction is scheduled to begin in the coming weeks.

Particular emphasis is placed on Building Physics as a key factor in quality, comfort, and sustainability - especially when renovating existing buildings.

VATTER & Partner ZT-GmbH is responsible, among other things, for:

  • General building physics services for additions and renovations
  • Sound insulation for newly created or restructured classrooms
  • Renovation measures for individual building components in the existing structure
  • Acoustic optimization of the classrooms
  • Summer thermal insulation with a focus on the interaction between sun protection and natural window ventilation

In addition, Structural Engineering is also an essential component of the project:

  • Renovation of existing structures and an extension in the form of a stair tower
  • Increase in floor load capacity with corresponding renewal of floor slabs
  • Partial demolition of load-bearing walls and replacement with reinforced concrete frames to create new spatial structures
  • New construction of the existing stairwell at Apostelgasse 5

It is precisely in sensitive existing buildings that the importance of the integral interplay between Building Physics and Structural Engineering becomes apparent for realizing functional, sustainable, and user-oriented solutions.

  • Project Leadership, Building Physics: Daniel Maierhofer
  • Project Leadership, Structural Engineering: Andreas Petermann

We look forward to the next steps and the continued collaborative implementation!

Photocredit: Rendering bloomimages berlin

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