The two historic dome structures were originally in single glass. The original shape with its Baltard style curb had long disappeared. Today Forzon is restoring the glass roof to its original design with respect for the historical style. The original single-glazed scales will be replaced by double-glazed units to comply with today's energy standards. The glass roof is a unique piece of craftsmanship made of steel, aluminium and glass. The building will also be brought up to contemporary safety standards. The space under the glass roof is made fire-safe by 24 opening elements for smoke and heat evacuation, as per the standards.
The Centre Universitaire Zénobe Gramme is a historic building dating back to 1911. It is currently being renovated and will be used for the University of Charleroi, which depends on University of Mons. The project is part of a complete renovation and aims to become a research centre for sustainable energy. The building has two glass roofs on a historic steel truss. One roof is a gable roof and the other has 4 slopes. The existing supporting structure in steel is reused and a new glass structure is added. The historical upstand in the Baltard roof type will be reinstated in glass.