who is the architect of the sydney opera house
Jørn Utzon Jørn Oberg Utzon, AC, Hon. FAIA (Danish: [jɶɐ̯n ˈudsʌn]; 9 April 1918 – 29 November 2008)[1] was a Danish architect, most notable for designing the Sydney Opera House in Australia. When it was declared a World Heritage Site on 28 June 2007, Utzon became only the second person to have received such recognition for one of his works during his lifetime, after Oscar Niemeyer.[2] Other noteworthy works include Bagsværd Church near Copenhagen and the National Assembly Building in Kuwait. He also made important contributions to housing design, especially with his Kingo Houses near Helsingør.
Sydney Harbour Bridge The bridge is held together by six million Australian-made hand-driven rivets supplied by the McPherson company of Melbourne,[14][15] the last being driven through the deck on 21 January 1932.[13][16] The rivets were heated red-hot and inserted into the plates; the headless end was immediately rounded over with a large pneumatic rivet gun.[17] The largest of the rivets used weighed 3.5 kg (8 lb) and was 39.5 cm (15.6 in) long.[12][18] The practice of riveting large steel structures, rather than welding, was, at the time, a proven and understood construction technique, whilst structural welding had not at that stage been adequately developed for use on the bridge.[17]