How shells in Sydney Opera House made?

Answer 1

The shells of the Sydney Opera House were made using a precast concrete technique. Each shell is composed of thin, white, reinforced concrete panels that were cast in molds and then assembled on-site. The design, which resembles a series of overlapping sails, was inspired by natural forms and required precise engineering to ensure structural integrity. The iconic shells were completed in 1973 and remain a defining feature of the building's architectural brilliance.