References

NEW CONSTRUCTION OF DIGESTION TOWER 1+2 WASTEWATER TREATMENT PLANT HANNOVER HERRENHAUSEN

References

NEW CONSTRUCTION OF DIGESTION TOWER 1+2 WASTEWATER TREATMENT PLANT HANNOVER HERRENHAUSEN

Client

Hanover Urban Drainage

Contact person

Dipl.-Ing. Stefan Wessels

Start of construction

03/2020

Construction time

2 years

Scope of services

New construction of digestion tower 1+2 sewage treatment plant Hannover Herrenhausen as well as a floor slab and a stair tower in in-situ concrete construction.

Shell construction contractor for formwork and concreting work as well as the laying of reinforcement and the assembly of stainless steel (material 1.4571) installation parts

Work carried out:

The floor slab has an area of approx. 1,600 m² and a thickness of 1.65 m and was produced in one piece within 20 hours with a volume of approx. 2,500 m³. 490 tons of reinforcing steel, mainly reinforcing steel with a diameter of 32 and 40 mm, were used in the floor slab.

The digestion towers were erected on a cylindrical base (approx. 500 m² formwork area) with an egg-shaped digester formwork (approx. 3,700 m² formwork area). Approx. 2,300 m³ of concrete, approx. 350 tons of reinforcing steel and approx. 40 tons of prestressing steel were used for each tank.

The stair tower has a height of approx. 44 m with 560 m³ of concrete, 50 tons of reinforcing steel and a formwork area of approx. 3,300 m². It was built using the sliding construction method with prefabricated stairs and in-situ concrete landings.