1. A topographic map has a contour interval of 1/2m and a scale of 1:1200. If two adjacent contours are 25mm apart on the map, the average slope (in grads) of the ground between the contours is 2. On a map the distance between the end points of a line AB (assumed to be of uniform slope) is 10.8cm. If the elevation of points A and B are 1809.5 and 1831.8, respectively, it can be analytically determined that the contour line with an elevation of 1815 meters will cross line AB from point A. 3. On problem 2, the contour line with an elevation of 1820 meters will cross line AB from point A.
1. A topographic map has a contour interval of 1/2m and a scale of 1:1200. If two adjacent contours are 25mm apart on the map, the average slope (in grads) of the ground between the contours is 2. On a map the distance between the end points of a line AB (assumed to be of uniform slope) is 10.8cm. If the elevation of points A and B are 1809.5 and 1831.8, respectively, it can be analytically determined that the contour line with an elevation of 1815 meters will cross line AB from point A. 3. On problem 2, the contour line with an elevation of 1820 meters will cross line AB from point A.
Chapter2: Loads On Structures
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
Transcribed Image Text:1. A topographic map has a contour interval of 1/2m and a scale of 1:1200. If two adjacent contours
are 25mm apart on the map, the average slope (in grads) of the ground between the contours is
2. On a map the distance between the end points of a line AB (assumed to be of uniform slope) is
10.8cm. If the elevation of points A and B are 1809.5 and 1831.8, respectively, it can be analytically
determined that the contour line with an elevation of 1815 meters will cross line AB
from point A.
3. On problem 2, the contour line with an
elevation of 1820 meters will cross line AB
4. On
problem
meters will cross line AB
from point A.
5. On problem
2, the contour line with an elevation of 1830 meters will cross line AB
from point A.
6. The difference between the upper stadia hair reading and the lower stadia hair reading is termed
the
7. A device used for quick and accurate measurement of distances which consists of a two-meter bar
mounted horizontally on a tripod is the
8. The distance from the center of the instrument to the principal focus is termed the
9. The scale ratio which is suitable to replace the equivalent scale 1 cm = 200 meters, is
10. A planimeter map does not attempt to portray heights or differences in elevation. It is only a
representation of the earth's surface in
horizontal dimensions.
11. Maps which represent the earth's surface in three dimensions and which usually uses contours to
indicate relief is termed a
12. When the scale of a map is given as 1 centimeter = 1 kilometer, it is referred to as
from point A.
2, the contour line with an elevation of 1825
13. For purposes of orientation, every map must display a
14. The configuration or shape and roughness of the ground is referred to as
15. Contours are shown on maps as the traces of level surfaces of
elevation.
16. The elevations of important features and critical points such as road junctions, peaks, summits,
sags, and highway crossings are indicated on the map and are known as
17. Hachures are a series of short lines drawn in the direction of the slope. For a steep slope the lines
are
and closely spaced.
18. Such lines resemble contours, but are not drawn with the same degree of accuracy. They are
drawn when not enough vertical control is available or when the surface is too irregular or intricate to
contour.
19. A representation of the terrain done in three dimensions to suitable horizontal and vertical scales
to provide a striking and realistic expression of topography is called_
20. The rate of rise or fall of the ground surface is known as its
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