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Due to weather and use-related influences, the facades and façade components have numerous partial damages. These include exposed and corroded reinforcement, concrete spalling, and cracks. As a result of CO₂ exposure, the depths of carbonation have developed down to the reinforcement and lead to corrosion. The facades are made of lightweight concrete. The escape balconies were constructed as precast elements of normal concrete; the escape stairwell building was executed in cast-in-place concrete. All façade surfaces and components receive suitable surface protection systems, while the existing exposed-concrete structures are to be preserved. To determine the system, sample areas are created in advance. The escape-balcony system will be largely demolished and rebuilt. Excluded are the balcony areas between the service shafts, which remain in the existing structure. There, the handrails are to be refurbished and newly coated. The stair towers remain in place. The handrails are to be completely dismantled and replaced with new ones. The bearing support consoles are to be strengthened on stair towers and on remaining escape balconies. For this purpose, the existing areas are to…

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