School Köln-Deutz

The grammar school is one of the most sustainable and modern schools in Germany. It is divided into bright and high-quality cluster areas based on a cross-classroom structure. Each year group forms a cluster with classrooms, common areas and differentiation rooms. The aim of this flexible room design is to personalise lessons and offer pupils a pleasant learning environment.

The project uses a combination of different materials such as recycled concrete, fly ash instead of cement and the installation of wooden elements to promote sustainability. The building is aiming for a PLATIN seal of approval from the German Sustainable Building Council (DGNB), making it a pioneering project throughout Germany. For example, resource conservation is being realised through the use of RC concrete with a high proportion of recycled aggregate.

In addition, 59 geothermal probes with an output of up to 375 kilowatts and a depth of up to 99 metres ensure a reliable and resource-saving heating and cooling supply. In conjunction with a heat pump, the rooms can be optimally cooled and heated with a coverage rate of 95 per cent. A solar rooftop system with an output of 80 kWp ensures a sustainable power supply. The building also meets the highest standards in terms of construction, with a primary energy requirement of 45.9 kilowatt hours per square metre and an efficiency house class of 40.

The new secondary school in Cologne-Deutz is a showcase project for sustainable construction and modern educational architecture. It offers space for 1,000 pupils and comprises a five-storey main building and an adjoining gymnasium. The school building is divided into three learning blocks, each with three storeys, which are connected via a transverse building.

The focus on sustainability is particularly noteworthy:

- Use of 21,000 cubic metres of recycled concrete (ECOPact R) from Holcim
- 59 geothermal probes for a sustainable heating and cooling supply
- Solar system with 80 kWp output
- Aspiring DGNB platinum certificate