The school center Mühlenredder in Reinbek, built in the 1970s, is to be renovated, rebuilt and extended. The 3- or 1-storey building complex built as a Kassel model will be dismantled from precast concrete columns, trusses and slabs except for the original reinforced concrete skeletal structure. The demolition work is carried out earlier in the forefront of the renovation. The subsequent conversion and extension work will be carried out in a coherent construction process without ongoing operation. The existing parts of the building will receive a completely new outer shell as well as a completely new interior. Furthermore, the entire grounds are renewed while preserving the tree population.

Execution of glazed interior door systems made of steel profiles with fire protection requirements in the new building and inventory, ground floor to 2nd floor approx. 40 door elements 2-wing with OL, EI 30, W x H = approx. 2.25 x 3.00 m, approx. 7 door systems 1-wing with OL and several times divided fixed glazing, EI 30, W x H = approx. 4.50 x 3.50 m, approx. 1 door systems 1-wing with OL and multiply divided fixed glazing, EI 30 , W x H = approx. 7.50 x 3.50 m, approx. 10 pcs. Sheet steel door elements primed, approx. 7 pcs. Sheet steel door elements stainless steel.