over a length of around 160 meters, we worked with our project partner Friedrich Wassermann to partially cover the active railway tracks with a combination of closed and open structures containing residential and commercial space. This type of project is unique in Europe to date. The urban planning concept for the project was developed as part of a citizens' workshop by md3+ Architekten, Matthias Dittmann, who also drew up the draft and approval plans. The result is three buildings with 540 square meters of commercial space (restaurants, offices, and possibly retail) and 67 condominiums on Clarenbachplatz.

In a project like this, the protection and safety of future users are paramount. For this reason, a proven, technically sophisticated and innovative solution was developed as part of the development plan and approval process, which provides comprehensive protective measures for the users of the building complex and local residents.

Building statics: A shattering layer absorbs initial potential impact loads. In addition, solid concrete walls up to 1 meter thick were integrated as bollards at the ends of the walls of the new buildings to provide impact protection.

Fire protection: The track system and buildings were completely separated by structural means. The track system was encased in fire-resistant partition walls and ceilings that can withstand temperatures of up to 1200°C. To prevent a possible fire on the track system from spreading to the building, roof covers closed at the sides were installed at a depth of 5 m in front of the rising facades above the track area. The fire-resistant supporting structure of the building also prevents the spread of fire. The concept was simulated on various components and demonstrates a very high level of safety.

Vibration protection: To protect residents and neighbors from vibrations, the ballast superstructure was replaced with a low-vibration slab track. To decouple vibrations, the tracks were laid in a new rail bed with rubber buffers, among other measures.

Sound insulation: The side walls and ceiling surfaces in the overbuilt area were fitted with sound-absorbing insulation. An absorbent noise barrier 1.20 m high was also erected parallel to the track in the area of the western openings. A noise protection report confirms that this not only ensures peace and quiet for the new residents, but also improves the situation for the surrounding residents.