Topographic Survey

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What is Digital Elevation Model? [PDF]

A digital elevation model (DEM) is a 3-dimensional illustration of a surface, typically a terrain region. It’s a grid-based structure having array numbers oriented to depict the terrain attributes such as slopes or aspect values. In simple terms, it is ...

BRANCHES OF SURVEYING

Branches of surveying involves Geodetic Survey, Topographic Survey, Hydrographic Survey, Cadastal Surveys, Engineering Surverys. More details of these are presented here.