Shell construction work (26-79298)

Internal ID: 26-79298 Title: Wilhelma - New Elephant World Building Shell construction work Description: Shell construction work Type of order: Construction work Description: The subject of the tender is the shell construction work for the New Elephant World at Wilhelma Stuttgart, consisting of an elephant house with stables for up to 14 elephants, a restaurant with a partial basement, an entrance building with a cash register and shop as well as a rainwater cistern. The focus is on concrete and reinforced concrete work with around 860 t of B500A reinforcing bars, of which around 301 t are in the floor slabs, 250 t in the ceilings and 305 t in the walls. The oval-shaped, double-curved reinforced concrete ring belt (longitudinal axis approx. 68 m, transverse axis approx. 49 m) made of 295 m³ of in-situ concrete in exposed concrete quality SB3, which accommodates the column-free wooden hall roof, is particularly technically demanding. The second technical focus is the approximately 1,605 m² large scratched concrete facade with heights of up to 8 m - a solid-colored exposed concrete with natural stone formwork inserts, which is removed before it has completely hardened and mechanically scraped off in sections of 20-30 m². There are also extensive underground pipes with around 590 m of underground rainwater pipes and 1,260 m of dirty water pipes as well as drinking and mixed water pipes including shafts, pumps and control structures. A total of around 1,890 m of ring earth made of stainless steel (1.4571) must be inserted for lightning protection. The outdoor facilities also include planting and feeding islands made of reinforced concrete, water basins in waterproof construction and electrical installations with around 1,860 m of route warning tape. The construction site is located in the healing spring protection area Stuttgart-Bad Cannstatt/Berg under the conditions of monument protection, FFH preliminary inspection and species protection (wall lizard).