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The Cameron Offices, a series of former government offices commissioned by the National Capital Development Commission and designed by John Andrews in the Brutalist structuralism style of architecture,〔 were constructed between 1970 and 1976 and partially demolished during 2007–08; located in the Belconnen Town Centre, in the district of Belconnen, located in the Australian capital city of Canberra.〔 During their thirty-year life cycle, the Cameron Offices primary occupant was the Australian Bureau of Statistics.〔 Three wings (3, 4 and 5) and the pedestrian bridge, from the initial nine wings, remain.〔 Wing 3 is currently occupied by the government agency responsible for superannuation administration, ComSuper. Wings 4 and 5 have been converted from government offices into student accommodation for the nearby University of Canberra.〔(【引用サイトリンク】title=UniLodge @ UC – Weeden Lodge )〕 ==Design and construction== The Cameron Offices were the first major buildings to be built in Belconnen. They formed part of the original town plan, in which the aim was to provide a relatively compact pedestrian-oriented scheme on a north–south axis following the slope of the land from housing to the south through the office areas, transport interchange and shopping centre on to the man-made Lake Ginninderra, which was to have cultural buildings and housing along its shore.〔 Andrews was chosen by Sir John Overall of the National Capital Development Commission as the architect, mainly on the recommendation of Professor Gordon Stephenson.〔 Andrews, who was a professor of architecture at the University of Toronto at the time, returned to Australia specifically to undertake the project. Andrews wished to create a truly Australian modern large-scale building suited to Australian conditions, something that he believed had not been achieved at that time. It was designed to accommodate approximately 4,000 public servants.〔 Built over a site, the complex was constructed with in insitu-concrete – much of the Mall, and precast concrete (mostly post-tensioned) – the office wings, with precasting being done on site. The structural system chosen for the office wings was complex yet logical in that it was to provide efficient and economical use of materials, column free office spaces with clear spans of in the north–south shortest direction, sun shading to the north facing office wings and a pleasing regular architectural rhythm to the overall complex. The precast concrete 'T' beams, which form the floors and roofs, overhang to the north and are picked up by edge beams which are in turn supported by individual columns staggered for each floor. The southern ends of the 'T' beams are supported by edge beams which are picked up by individual staggered hanging 'columns' from large 'gallows' beams which span across the landscaped courtyards. The gallows beams are in turn supported by large, full-height columns to the south of the hangers and the main structure of the offices on the north. Since the gallows beams are being 'pulled down' by the hangers, the load on the beam at the other end where it is supported by columns is minimal, thus providing an efficient structural system that is in tension at one end and under compression at the other. To provide column-free offices, the structural columns are located in the landscaped courtyards between each wing;〔 themed according to different types of vegetation and ecosystems from various parts of Australia. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cameron Offices, Belconnen」の詳細全文を読む スポンサード リンク
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