germany-bielefeld: lworking./ comprehensive school rosenhöhe - new building sek ii and sports hall / external windows, external doors, facade construction, sun protection./ services are awarded in the trade "external windows, external doors, facade construction and sun protection" for the new building of the secondary school ii with sports hall of the inclusive comprehensive school rosenhöhe in bielefeld, brackwede. the two buildings have a gross volume of approx. 31,800 m3. the three-storey school building is designed as a reinforced concrete skeleton construction, the two-storey sports hall in precast concrete construction with a trapezoidal sheet l roof on a hillside without a ment.