Sun_25.2.10_Geo

essential essential information for site formation

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Unformatted text preview: eed Need to understand the site!!! Essential Essential Information for Site Formation Design • • • • • • • • Site topography Site geology Present & past development Past instability within and outside site Ground Investigation Data Soil properties As-built records of existing structures Existing utilities within and outside the site Site Site Topography • 1:1000 topographic maps with spot heights and contours at 2m intervals • Topographic survey plans to be prepared by by land surveyor Site Site Topography – Fo Tan Site Site Site Topography – Au Tau Site Site Site Geology Common in Hong Kong • Granite • Volcanic Site Site Geology Structural & Lithological Features Engineering Implications? Site Site Geology Marine Marine Environment Site Site Geology Scheduled Area Nos. 2 & 4 Northwest New Territories (2) Ma On Shan (4) Potentially underlain by marble with solution features Site Site Geology Designated Area of Northshore Lantau • Locally complex geological conditions • Anomalously...
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