Structural work as part of the fire protection renovation of the Werner-Heisenberg-Gymnasium in Leverkusen.

The concrete work involves concrete sawing work in concrete floors to expose ventilation ducts, openings in ceilings and roof areas for ventilation ducts, concrete sawing work on a parapet balustrade. Closing openings in concrete ceilings and in the floor area via built-in ventilation ducts. Installation of steel structures in the roof area. Open and close masonry walls. Concrete renovation work in small areas.

Opening and closing of areas outside (inner courtyard).