Expansion and TGA services Conversion and modernization of the Bonatz building Expansion and TGA services Conversion and modernization of the Bonatz building

Expansion and TGA services Conversion and modernization of the Bonatz building Expansion and TGA services Conversion and modernization of the Bonatz building
The Bonatz building is being redesigned as a result of the conversion of Stuttgart main station from the current terminus station to the lower-lying through station. Level 0 below the terminal platform hall is being expanded to become the new distribution level for the flow of people to the distribution walkways of the new station hall. At the same time, it represents the internal access level for the commercial areas on levels 0 and +1. From Arnulf–Klett–Platz, level 0 can be reached through both the large and the middle ticket hall. With the completion of the new underground station hall, Straßburger Platz will be created at the level of the current level 1. After the renovation, the Bonatz building opens with its east facade towards this new square. The Bonatz building retains its function as a reception building and has a rail-related range of uses with traveler needs, service functions, offices for railway companies and a hotel. For the sustainable marketing of the Bonatz building, extensive adaptation measures are required for the commercial sector in order to ensure adequate and easily accessible offers for travelers, to maintain income from rentals and to achieve additional income potential. The following measures are planned for the commercial area of the Bonatz building: - Gutting and partially rebuilding the central structure of the Bonatz building while preserving the historical facades and sustainably modernizing the entire building. - Realization of a new basement and extensive renovation work as well as a new supporting structure in the middle area (house-in-house). - Reorganization of the supply and disposal situation by implementing an underground supply structure under Kurt-Georg-Kiesinger Platz next to the Bonatz building or the existing technical building. - Creation of traveler supplies in the new transit level E0 - Realization of a mix of uses of retail, restaurants and hotels on levels E+1 to E+4, partly by increasing the middle area for hotel and conference use, with conference capacity and approx. 150 rooms - Revitalization and reorganization of the office areas in the side wings and the tower - Sustainable upgrading of the station forecourt - Renovation, restoration and upgrading of the historic, listed buildings Building structure. The construction work of this contract unit includes the entire expansion, as well as the technical building equipment and the construction site logistics of the Bonatz building. The upcoming work can be divided into cost groups as follows: 300 Expansion/building construction - building structures - 330 External walls/vertical building structures, outside - 340 Interior walls/vertical building structures, inside - 350 Ceilings/horizontal building structures - 360 Roofs - 380 Building construction installations - 390 Other measures for building structures 400 Expansion/building construction - technical systems - 410 wastewater, water and gas systems - 420 heat supply systems - 430 air conditioning systems - 440 electrical systems - 450 communication, security and information technology systems - 460 conveyor systems - 470 usage-specific and process engineering systems - 480 building and system automation - 490 other measures for technical systems