Re-Fer

Description
A comprehensive earthquake retrofit was required for the St. Stephan assembly hall. The building, consisting of an assembly and a sports hall, was repaired during the summer holidays. Due to the different structural conditions and wall types, various approaches to earthquake reinforcement had to be used.

The solutions used included

– CFRP louvres with steel angles for force transmission

– Attached trusses made from steel profiles

– memory^®-steel re-bar 16 for specific masonry walls

– Ceiling reinforcement with CFRP strips

Economical and easy-to-install solutions with re-bar 16 have been developed for various walls. The memory^®-steel bars were inserted into milled slots in the masonry and anchored at the top and bottom in the concrete ceiling. By heating and prestressing the bars, a controlled vertical force was exerted on the masonry to increase its shear and bending resistance in the event of an earthquake. No space loss incurs for this type of strengthening.

Advantages:

– Customized reinforcement solutions for different wall types

– Efficient installation within a limited period of time

– Increased earthquake resistance through innovative memory^®-steel technologies

This project shows how different technologies can be combined to fulfil specific seismic reinforcement requirements efficiently and cost-effectively.

re-fer Product
memory^®-steel re-bar 16