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24 lip 2024 · Index contours are bold or thicker lines that appear at every fifth contour line. A contour interval in the survey is the vertical distance or the difference in elevation between the two contour lines on a topographic map.
28 sie 2023 · Contour Interval: The contour interval is the difference in elevation between two adjacent contour lines. A smaller contour interval provides more detailed information about elevation changes but results in more contour lines on the map.
What is Contour Interval? A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map. Usually there are different contour intervals for the different maps.
A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.
index contour line. [symbology] On a topographic map, a contour line that is drawn with a thicker line symbol than the intermediate contour lines and usually labeled with the elevation that it represents. Depending on the contour interval, every fourth or fifth contour line may be an index contour.
5 lut 2022 · 1. Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. This tells you the elevation above sea level. 2. Intermediate lines are the thinner, more common, lines between the index lines. They usually don't have a number label. Typically one index line occurs for every five intermediate ...
31 sie 2019 · Instead, every 5 th contour line is labeled with an elevation, and is darkened; such a contour line is called an index contour. The use of index contours allows a map to be visually more appealing, especially when the contour lines are numerous and closely spaced to one another.
