What are digital elevation models in a GIS software? Why we used it in a GIS software? Explain it benefits for the civil engieering and how we used it for survey of sites?
If you mean in general, then no. The strength of any material doesn't depend on the specific gravity of that material, be it a solid or paste. Neither of the compressive, tensile or shear strength depends on density. For example, two grades of steel might have the same specific gravity but very diffRead more
If you mean in general, then no. The strength of any material doesn’t depend on the specific gravity of that material, be it a solid or paste.
Neither of the compressive, tensile or shear strength depends on density. For example, two grades of steel might have the same specific gravity but very different strengths. Cast iron is stronger in compression and wrought iron in tension despite the same densities. You can design two concrete mixes with the same densities and compare the strengths to check yourself!
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Digital elevation models are digital representations of x, y, and z locations of points on the surface area of a terrain. These locations are acquired either from a GPS receiver, survey instruments, or aerial or satellite stereo photography depending on the spatial accuracy needed. These digital filRead more
Digital elevation models are digital representations of x, y, and z locations of points on the surface area of a terrain. These locations are acquired either from a GPS receiver, survey instruments, or aerial or satellite stereo photography depending on the spatial accuracy needed.
These digital files of x, y, and z locations are used by the algorithms in a GIS software to transform into either three-dimensional surfaces or elevation contours. It is the GIS software that makes use of this “spatial data.” The output of these algorithms are used for further analyses and calculations.
These could be; calculating cut and fill off of the land under study, 3D visualization of a terrain, watershed and viewshed analyses, and many other civil engineering, infrastructure, architectural and even video games, defense and intelligence-related applications and uses.
Hope this helps.
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