Table of Contents
- 1 Which of the following are use of contour maps?
- 2 What are the uses of contour lines?
- 3 How are contour maps prepared?
- 4 What is a contour line what is the importance of contour maps in civil engineering works?
- 5 What is the importance of contour maps in civil engineering works?
- 6 What is contour in civil engineering?
- 7 How will a contour map be useful for soldiers & Defense officers?
- 8 Where can I buy contour maps?
- 9 What is the use of contour map in civil engineering?
- 10 What happens when two contour lines cross each other?
Which of the following are use of contour maps?
Contour map is useful to determine the tracing of contour gradients and the location of route. Explanation: A contour plan is very much useful in locating the route of highway, railway, canal and any other communication lines. 5. Contour maps are used for the measurement of drainage areas.
What are the uses of contour lines?
These contour lines are an important way of showing the rise and fall of the land on a map. Contour lines show all the places that are the same height above sea level. They also tell us about the slope of the land. On a steep slope, the lines are close together.
How are contour maps prepared?
The two ways to establish a contour map are the cross-section method and the trace contour method. To use the cross-section method, set a control or reference line at the center of the lot, then lay out and stake a grid; the elevation is determined at each stake in the grid relative to a benchmark.
What are contours how are they represented in the survey map?
Topographic contours are shown in brown by lines of different widths. Each contour is a line of equal elevation; therefore, contours never cross. They show the general shape of the terrain. The contour interval is printed in the margin of each U.S. Geological Survey (USGS) map.
How will contour map be useful for mountaineers?
Textbook solution It shows the nearby resources. It shows the height of each hill or peak located above sea level. They show how steep the mountain or hill is.
What is a contour line what is the importance of contour maps in civil engineering works?
Contour maps are extremely useful for various engineering works: A civil engineer studies the contours and finds out the nature of the ground to identify. Suitable site for the project works to be taken up. By drawing the section in the plan, it is possible to find out profile of the ground along that line.
What is the importance of contour maps in civil engineering works?
What is contour in civil engineering?
❖Contour. • An imaginary line on the ground surface joining the points of equal elevation is known as contour. • In other words, contour is a line in which the ground. surface is intersected by a level surface obtained by joining points of equal elevation.
Why do we need contour maps?
Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes. USGS topographic maps also show many other kinds of geographic features including roads, railroads, rivers, streams, lakes, boundaries, place or feature names, mountains, and much more.
What is contour in a map?
noun. a topographic map on which the shape of the land surface is shown by contour lines, the relative spacing of the lines indicating the relative slope of the surface.
How will a contour map be useful for soldiers & Defense officers?
Answer: Contour maps help us to understand the characteristics of the landforms. These maps are of immense use to mountaineers, trekkers, soldiers, defense officers, etc. These maps prove to be of great use in the planning for a region too.
Where can I buy contour maps?
The online USGS Store
The online USGS Store is the only site for ordering paper topographic maps….How do I find, download, or order topographic maps?
- Map Locator on the USGS Store — Search and download free digital maps in GeoPDF format or order paper maps.
- TopoView — The largest selection of digital options.
What is the use of contour map in civil engineering?
Contour maps are extremely useful for various engineering works: A civil engineer studies the contours and finds out the nature of the ground to identify. Suitable site for the project works to be taken up. By drawing the section in the plan, it is possible to find out profile of the ground along that line.
What is the importance of contours in geography?
Contours provide valuable information about the nature of terrain. This is very important for selection of sites, determination of catchment area of a drainage basin, to find intervisibility between stations etc. Contours provide valuable information about the nature of terrain.
How is the catchment area of a river determined using contour map?
The catchment area of a river is determined by using contour map. The watershed line which indicates the drainage basin of a river passes through the ridges and saddles of the terrain around the river. Thus, it is always perpendicular to the contour lines.
What happens when two contour lines cross each other?
If contour lines cross each other, it shows existence of overhanging cliffs or a cave (Fig. 5). A civil engineer studies the contours and finds out the nature of the ground to identify. Suitable site for the project works to be taken up. By drawing the section in the plan, it is possible to find out profile of the ground along that line.