(b26009-7) New construction intervention center Zoll St. Margrethen / BKP 211

Plot 3396 is located next to the A1 motorway at exit number 86 St. Margrethen. This tender covers the construction work for the supporting structures of buildings A, B and C as well as the atrium, the scanner system and foundations of surrounding structures. The work is expected to be carried out from January 2027. The work will be completed in the autumn of the same year. Construction site equipment Temporary facilities and installations to ensure construction site operations with three cranes, various construction site containers, construction electricity, construction water, barriers, storage areas, access roads, lifting equipment as well as security and signaling measures. Reinforced concrete work in in-situ concrete The supporting structures of buildings A and B are designed as a timber engineering structure using a skeleton construction. The builder creates the shell of the rooms below ground in reinforced concrete, the floor slabs and the rising staircase cores in exposed concrete quality. Steel welded plates are inserted into the reinforced concrete components as an interface to the timber engineering structure. Prefabricated supporting structure with RFS elements and head structure made of in-situ concrete The parking garage (Building C) consists of a prefabricated reinforced concrete structure with non-reinforced Rippmann ceiling elements (Rippmann Floor System, RFS). Prefabricated columns and orthogonally arranged prefabricated beams are tensioned together with prestressing cables. The RFS ceiling elements are then lifted into the ceiling surfaces and all joints are grouted. Walls surrounded by columns and beams are then created with SCC pumped concrete. A thin reinforced concrete slab is created in in-situ concrete on each floor of the RFS ceilings. At the front of the parking garage, a head structure made of prefabricated supports and in-situ concrete walls and ceilings will be created. A total of around 4,600 m3 of concrete and 500 t of reinforcing steel for walls and slabs will be used in the supporting structures. 6,500 m2 of wall and 2,100 m2 of ceiling formwork are used. The parking garage