Warbud can now celebrate another milestone for construction works on the Polish National Radio Symphony Orchestra’s new seat – the steel structure of 11 huge girders has been covered with last concrete elements creating the final shape of the venue’s flat roof.
The steel girders weighing 22 tons each hold the concert hall’s waved ceiling, acoustic plafond and other technical infrastructure as well as the coating of concrete and corrugated iron laid above. Scaffolds holding the waved ceiling, plafond and maintenance platforms – now supported from above by the girders – are being disassembled and the four-storey grand concert hall’s interior show its magnitude.
This is also the last chance to see the all four tower cranes working together as the first of them will be dismantled soon. The concrete works have been done while installation and cladding works are presently underway at full steam. “We are about to commence elevation laying works next week, then the first clinker bricks will be laid” – said Łukasz Wojteczek, deputy site manager at Warbud. The facade will be covered by 410 000 bricks.
In the meantime, builders are finishing to lay cladding panels at the top of the great concert hall. This is the central part of the structure which overtops the external building’s roof – the external building, also known as the ring, encloses the grand concert hall, which is built as a separate facility.
“The top wall cladding is made of 265 panels of black concrete. Each of the panels is 8 centimeters thick. Wooden formworks were used for concrete pouring to remind the black walls of the great concert hall which are characterized by the same textures of wood. We had to be very careful to transport these thin panels as they were manufactured outside the construction site” – Łukasz Wojteczek explained.
Warbud is a leader of the consortium which builds the Polish National Radio Symphony Orchestra’s new seat for PLN 234,9 million (estimated total cost of the undertaking: PLN 265 million). The remaining two companies of the consortium is EBUD and LTT. The head designer of the building is Tomasz Konior, Nagata Acoustics – the world’s famous acoustic company from Japan – is responsible for the acoustics.