The conversion of the former Gondrand building in Basel planned by Koechlin Schmidt Architekten is intended to be as close to CO2 net zero as possible to align with the sustainability goals of the city of Basel. In order to achieve this, the potential for reusing building components is to be exploited on the one hand, and on the other, attention is to be paid to a good CO2 balance when choosing new materials.
For the conversion of the Gondrand building, Zirkular used a building survey process to determine which components were suitable for reuse. Components that cannot be reused on site during the conversion should, if possible, be transferred to the IBS building database to enable their later use in projects owned by the canton.
Thus, in the planned conversion project, the main principles of the circular economy are utilized. Reused components from the existing building stock are to be used first, followed by components taken from other demolition projects. Based on the relevant analysis, a range of possibilities were presented. Important foundational basics and parameters as well as processes were defined, and the components sought were determined.
In addition, Zirkular coordinates the procurement of the components. In addition to various coordination tasks, this also includes component documentation and support for component transport and disassembly.