The project at 347 Calderwood Road consists of a 455 lot, multi-stage residential subdivision located in the Calderwood Valley development in the Illawarra. Role of the T eam Orion Consulting was engaged to undertake engineering investigations and, in conjunction with the urban designer, optimise the yield and commercial returns across the site. The Orion Consulting design team was also engaged to prepare engineering design documentation to support the DA submission. Challenge Faced The topography across the site was extremely challenging with natural grades in some areas exceeding 30 degrees. This meant that a number of scenarios were required to be investigated to ensure that the proposed roads met with Council standards whilst the grades across the residential lots did

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