How to calculate gradient on a map. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube. Divide the answer by the distance in feet represented by the line you drew. The slope is obtained by dividing the rise over run.
Also find the length between the endpoints of your slope. How to calculate gradient. Multiply that number by 100 to give you the percent slope of the hill.
When using a topographic map true north is always at the top of the map. The gradient 3 5 06. How to calculate gradient on a topographic map.
Rise difference in elevation divided by run difference in distance will give you the slope. Feel free to watch my other videos on ge. You would use a topographic map for this as well as the map scale to calculate distance.
The line is less steep and so the gradient is smaller. Place the protractor on the map with 00 pointing to the top of the map. In google earth you can find the elevation of the top and bottom of your slope and calculate the difference.
To find the slope of a feature the horizontal distance run as well as the vertical distance rise between two points on a line parallel to the feature need to be determined. To measure the bearing from one point to the next the protractor must be aligned so that 00 point to the top of the map true north. Calculate the gradient by subtracting the elevation of the lower contour line on the line you drew from the elevation of the contour line at the other end of the line you drew.
The closer together the gradient lines the steeper the ascent the further apart the more gentle the elevation. Multiple your answer by 100 to calculate the grade. Draw a straight line from your starting point to the end point.
Drawing Contour Lines And Calculating Gradient Topographic Maps By Mr Gneiss
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