Here’s a quick guide on how to read topographic map. SketchUp desktop client and premium web modeler. Here, we will try to generate 5m contour interval based on the Google map topography, with the specified value of 20m contour interval.īefore we start the modelling procedures, we should analyze first the contour interval of the topographic map. Draw in 3D, analyze and improve your building’s performance, and creatively document and share your ideas with your class. In this tutorial, we will learn how to adjust the contour intervals using SketchUp. Technically, it is possible to label the elevation of each contour line more extensively up to 5 meters (or less) through 3-D modelling. Topographic maps may have many contour lines. These topographic elevations found mostly on online map can only be viewed in a macro scale level, showing a minimum of 20m contour intervals. Most contour lines found in online topographic maps such as Google map ( ), Open Street Maps ( ), NAMRIA ( ), etc. Modelling and reading topographic maps becomes more convenient with the aid of modern technology such as online map surveying and 3-D modelling software. Make a Topographic Map Using SketchUp and Google Maps
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