Topographical survey

    Cards (7)

    • Topographic survey
      Topographical survey is a detailed map that creates accurate representation of land contours and elevations, which are crucial for construction and land development. It can capture both natural and man made feature.
    • Types of topographical survey:
      Boundary survey- helps identify legal property boundaries.
      Hydrographic survey- focuses on the study of bodies of water and costal area.
      Flood risk management survey- assess the vulnerability of a site to flood.
    • Uses of topographical
      Environmental studies
      Establish legal boundaries
    • How to carry out topographical survey:
      • Set up the total station to a known point using GPS technology, ensuring it’s levelled by adjusting its legs making sure the bubble is in the middle.
      • Establish control points, measure out horizontal and vertical angles of each point. 
      • Using EDM measure out distances of each point from the instrument to the target. 
      • Transfer collected data into a computer for further analysis. 
    • Advantages of topographical survey:
      • Accurate representation of land features 
      • Support the environmental assessment 
      • Easy integration with other softwares
    • Disadvantages of topographical survey:
      • Accuracy depends on the equipment and personnel skills
      • Challenging for large areas 
      • Weather dependent 
    • Land surveying= green field land
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