The construction of the dam drew upon the knowledge and experience of a number of engineers employed in the Branch at the time, including Ernest M. Collectively this topography at times of high water imparts a picturesque scene when viewed from selective vantage points above and on the dam wall. The wall of Cordeaux Dam is an engineering work imbued with a sense of aesthetic values expressed through the long curved wall set within the valley of the Cordeaux River.
Bell", and the date was carved into the summits rock with a tomahawk. This latter is associated with the Residential Engineer for construction and operation of the dam and is a fine example of a late Federation Bungalow style building. The plan was based on road and allotment layout being primarily dictated by pedestrian movement within the neighbourhood. The road layout and design was based on a hierarchical function of roads, conforming to the road strategy in the Unanderra area, with main distributors Central Road and Cordeaux Road , and minor collector roads to service the area. In , a feasibility study was carried out by the company Golder, Moss Associates, Consulting Geotechnical Engineers. Such things as bus routes, services schools , accessibility around the suburb by both cars and pedestrians, and protection of the environment, were all factored into the development Dunk, K. Key representative attributes include the use of cableways, the building of temporary townships to house labourers and tradesman, building of semi-permanent cottages to house salaried staff, the construction of terrace platforms for plant and machinery, mechanisation of concrete production, the construction of a purpose built road of access and tramway to transport men, supplies and materials from the nearest railhead to the construction site, the building of permanent infrastructure such as water supply for plant, men and horses and the use of electricity to power plant and equipment. Downstream of the dam wall the setting is characterised by the steeper inclines that graduate into the gorgre created by the river's flow over time. The developer was also required to construct a new section of road to facilitate access to and within the new suburb. It continues to play an important role as a major source of supply for the Sydney region. The construction of the dam drew upon the knowledge and experience of a number of engineers employed in the Branch at the time, including Ernest M. Upstream of the dam wall this setting is characterised by the broad expanse of the pool of water bordered by the crests of the valley sides. The dam and grounds are recognised by the National Trust of Australia NSW as being a place which is part of the cultural environment of Australia, which has aesthetic, historical, architectural, archaeological, scientific and social significance for future generations, as well as for the present community of NSW. Even by the international standards of the time, Cordeaux was a large dam and was a significant work of engineering in its day. Walkers should be aware that there are hazardous, sheer cliffs along the tracks. The ensemble of plant buildings either asscociated with the construction or completion of the dam, such as weatherboard machine shed adapted to double garage and the corrugated iron blacksmiths, are unique in situ examples within the broader context of the four Metropolitan Dams. It incorporates inspection galleries, contraction joints, and foundation drainage systems which collectively demonstrate the advanced state of this technology at the time. There is evidence in the landscape design, particularly in the use of palms and tree ferns and battered stonework retaining walls, of an intention to continue the Egyptian Revival references apparent in the design of the main dam structures. Heritage listing[ edit ] As at 21 January , Cordeaux Dam was the second of the four water supply dams built as part of the development of the Upper Nepean Water Supply Scheme, one of the most important engineering works and items of public infrastructure in Australia, and still has the longest wall of all the NSW water supply dams. On 20 February , the lease holders of the mining operation applied for exemption from working conditions to construct a traffic-able road to the lease. Key representative attributes of this practice include utilising the former township as a picnic area, utilising the former terraced construction areas as picnci areas and lookouts, and utilising the former construction roads and tramway for vehicular access to the dam wall. From the summit of Mt. The party was composed of Mr. O'Connor of Tallebudgera and W. At this time, the farms were purchased by R.
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