Apartment building Thiersteinerallee 55, Basel

Reconstruction, refurbishment and seismic retrofitting

The multi-family house, built in 1903, consists of a basement, a first floor, three upper floors, and it has a mansard roof, in which two additional attics are integrated. In order to enable a return to the original residential use, the MFH underwent a total renovation:

> Renewal and elevation of the attic floor with solid wood slab as load-bearing ceiling structure.
> New balconies
> Installation of elevator shaft
> Reinforcement of earthquake safety
- Formation of ceiling panes
- Connection of ceiling slabs to gable walls
> Retrofitting of existing structure
- Wooden beam ceilings, incl. replacement for riser zones
- Interior load-bearing wall
> Local lowering of floor slab, incl. underpinnings


> Structural design conversion and refurbishment
> Verification of earthquake resistance, incl. retrofitting
> Planning of building pollutants
> Crack logs

Genossenschaft der Pfarrei Heiliggeist

Seismic safety, reconstruction,
Structural engineering



Your contact person

Michael Geier
Head of Renovation, Earthquake Engineering I
+41 61 317 62 23 | bWljaGFlbC5nZWllckBncnVuZXIuY2g=

Gruner AG
St. Jakobs-Strasse 199
CH-4020 Basel

References on the subject

Verwaltungsgebäude, Bundesamt für Bauten und Logistik BBL
Alters- und Pflegeheim Brunnmatt, Liestal
Actelion office and laboratory building
Renovation and new construction of the global headquarters for Syngenta
Theater- and Playhouse, Basel