Nachhaltige Modernisierung eines typischen Schweizer Mehrfamilienhauses der 1950er Jahre

• Research unit: SFOE
• Project number: 103118

Key words (German)

TP0146;F-Wissens- u. Technologietransfer

Short description (German)

- Erfolgskontrolle und Diffusion der Ergebnisse im Rahmen von IEA ECBCS Annex 50
- Verfügung

Final report (English)

The project at Segantinistrasse, a typical apartment building from the 1950s, provided the ideal opportunity to test the prefab retrofit system which was developed as part of the ccem-retrofit research project. In summary the system met the following expectations: compared to a conventional exterior finishing system the prefab method proved to be an efficient construction method, providing a degree of precision crucial to achieving a tight building envelope. It was demonstrated that the prefab retrofit construction is a feasible method for transforming the vast stock of energy-wasting residential buildings into net zero energy balance buildings. It is, however, important to point out that careful planning is instrumental and labourintensive: The Segantinistrasse project showed that issues such as site access, scaffolding system, and early involvement of all stakeholders in the planning process are the keys to ensuring a successful project. Above all, the building size itself determines largely whether or not prefabrication can become a cost effective alternative to conventional construction methods. Only sufficient element repetition and large-scale production provide the economy of scale to make the case for prefabrication. Thus although the Segantinistrasse project was very interesting for training purposes, it was rather toosmall for an efficient implementation of the retrofit method.

Auftragnehmer/Contractant/Contraente/Contractor:
Kämpfen für Architektur AG

Autorschaft/Auteurs/Autori/Authors:
Grischott,Nadja
Kämpfen,Beat
Naef,René

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