How to Draw a Cross-Section from a Topographic Map
Making a cross-section from a topographic map is not difficult and can be useful for hiking, driving, biking, walking, and running. All you need is a map of the area, graph paper, a ruler, and a pencil. Mark each topographic line or each index line (the darker topographic lines) on graph paper and label the mark with the elevation.
How are cross section drawn?
Cross sections of hills use contour lines to determine the height of the land, while cross sections of river depths use negative numbers to give the line graph the appearance of depth rather than height.
What is the scale of a geological cross section?
When compared to the horizontal scale, it is common to increase the vertical scale ratio by an order of magnitude; for example, if the horizontal scale is 1 inch equals 100 feet, a typical vertical scale for the geologic cross section would be 1 inch equals 10 feet.
What is a cross section diagram?
Cross-sections are created using the contour lines on a topographic map and show the shape of a feature (such as a mountain) viewed from the side, as if cut through with a knife.
What is a cross section line?
A cross section is a two-dimensional face obtained by cutting a “slice” through a solid object. When a plane intersects a solid figure, the cross sectional face can be a point, a line segment, or a two-dimensional shape such as a circle, rectangle, oval, or hexagon.
What are the four things to include on every geological cross-section?
A legend, the orientation of the line the cross-section represents on the map, a title, and a scale (e.g., Figure 8.11C) should all be included on every geological cross-section.
How do you draw a cross in AutoCAD?
How to Make an AutoCAD Mechanical Centerline Cross
- To display the Select Options for Centerlines dialog box, press ENTER, or specify a starting point for the centerline.
- To specify the center point of a hole, click Home tab Draw panel Centerline drop-down Centerline Cross.
Is a cross-section a diagram?
Cross-sections A geologic cross section is a diagram that depicts the structure and arrangement of rocks as they would appear in a vertical plane beneath the Earth’s surface, providing a perspective similar to that of looking from the side (or a side view).