Step 1:-First of all, locate two index contour lines that are named with a particular elevation. The computation of the contour intervals is as below, In the above picture, the dark lines with reading are index contour lines. These marked or tagged lines are remembered or termed index contour Lines. To maintain the contour map easy and understandable to read, not every contour line is marked with its elevation reading. Locate the difference between the two elevations.Ī contour map contains contour lines of a given geographical region.
The biggest number indicates the uphill rise. Discover the elevations of two adjacent index lines. These index lines will be noted with their elevation. On most of the maps, each fifth contour line, indicated as a heavier or darker line, is an index line or index contour.
#Whats a contour interval how to#
Understanding how to compute the interval becomes a valuable skill. It refers to the vertical distance or difference in elevation between two successive contour lines on a map or a topographic profile.Ī map legend usually specifies the contour interval on the map, but sometimes just a portion of a map is available. What Is Contour Interval? Contour IntervalsĬontour interval is an important concept in cartography, geography, and topography. How can I use contour intervals to determine the slope of a hill or mountain?.What do closed contour lines represent on a topographic map?.How is the contour interval determined?.
#Whats a contour interval software#
Characteristics of ContourĪlso Read : Something About Civil Engineering Design Software Purpose an Extent of The Survey It gives a general idea about the topographic features of the ground which is helpful in deciding the location or alignment of an infrastructure project. Plotting of contours gives the topography of the area surveyed. otherwise, the general appearance of the map will be misleading.
The contour interval is kept constant for the contour plan. or It is the difference of elevations between two successive contours. Contour Interval Definitionĭefinition of Contour Interval is defined as verticle distance between any two consecutive Contours. Contour interval, definition of contour interval, contour interval definition, what is the contour interval of this map, what is the contour interval of the map, how to find the contour interval, what is a contour interval on a map, how to find contour interval, contour interval of a map, contour interval on a map, contour interval example, contour interval on a map, contour interval formula, contour interval is mcq, contour interval calculator, what is a contour interval apex, index contour line, importance of contour lines, etc these al are related question which also find and read by engineer who read these civil experience article.
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