Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

SURVEYING QUIZ 3 > TOPOGRAPHIC SURVEYING > Flashcards

TOPOGRAPHIC SURVEYING Flashcards

1
Q

Introduction:

This can be defined as the shape, configuration, roughness or three-dimensional quality of Earth’s surface.

A

Topography

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Introduction:

These are made to show this information, together with the location of artificial and natural features of the Earth, including buildings, highways, streams, lakes, forests and so on.

A

Topographic maps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A _____________ topographic map provides much definite and exact information which can be used as a basis for various purposes.

A

detailed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

It is the variations in the elevation of the ground surface, also features of height above a plain or reference datum.

-from google

A

Relief

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Different Methods in Representing Relief:

As a method, these provide definite and precise information regarding elevation.

A

Spot Heights or Spot Elevations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Different Methods in Representing Relief:

Spot Heights are heights of places surveyed and they denote the actual height above mean sea level. They are shown in maps as dots with their respective values written beside it.

True or False?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Different Methods in Representing Relief:

As a method, these are series of short lines drawn in the direction of the slope.

A

Hachures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Different Methods in Representing Relief:

Under hachures, for steep slope, the lines are _______ and _____ spaced; and for gentle slope, they are _____ and ______ spaced.

A

heavy, closely, fine, widely

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Different Methods in Representing Relief:

Hachures only give a general impression of the configuration of the ground, but they do not provide numerical values such as the actual elevations of the ground surface.

True or False?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Different Methods in Representing Relief:

As a method, these are drawn when not enough vertical control is available or when the surface is too irregular or intricate contour.

A

Form Lines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Different Methods in Representing Relief:

Form Lines are not usually represented as dashed lines and do not portray any actual elevations.

True or false?

A

False,

Form Lines are usually represented as dashed lines and do not portray any actual elevations.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Different Methods in Representing Relief:

Form Lines is a method in representing relief that are only used to show the shapes of terrain rather than relief.

True or false?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Different Methods in Representing Relief:

This method is the most widely used method of quantitatively representing hills, mountains, depressions, and ground surface undulations on a two-dimensional sheet of paper.

A

Contour Lines or Isohypses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Different Methods in Representing Relief:

These are shown on maps as the traces of level surfaces of different elevations.

A

Contours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Different Methods in Representing Relief:

A topographic map containing contour lines shows not only the elevations of points on the ground, but also the shape of the various topographic features.

True or false?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Different Methods in Representing Relief:

This method is common use for aerial navigation charts and on small scale maps of the world.

A

Layer Tinting System

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Different Methods in Representing Relief:

In Layer Tinting System, a scale of graded color tints or a system of different colors is used to show different zones of elevations.

True or false?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Different Methods in Representing Relief:

Color tints when used in conjunction with contour lines does not give pictorial effect by accentuating the areas of different elevations.

True or false?

A

False,

Color tints when used in conjunction with contour lines give pictorial effect by accentuating the areas of different elevations.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Different Methods in Representing Relief:

This method is an old method use to show relative elevations on maps.

A

Shading

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Different Methods in Representing Relief:

(1) Shading is independent upon shadow cast by the elevated portions of the land.

True or false?

(2) Shading is accomplished by correct placement on the map of different shades of gray tints.

True or false?

A

(1) False,

Shading is dependent upon shadow cast by the elevated portions of the land.

(2) True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Different Methods in Representing Relief:

As a method, these provide the most striking and realistic expression of topography.

A

Relief or Terrain Models

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Different Methods in Representing Relief:

The _______ is a representation of the terrain done in 3-D to suitable horizontal and vertical scales.

A

model

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Different Methods in Representing Relief:

The model is in fact a miniature of the terrain it represents.

True or false?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Contour:

_________ is universal method to show the relief.

A

Contour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Contour:

The unit of measurement of contour is generally ________ (above or below?) the mean sea level.

A

metres, above

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Contour:

Contour has a disadvantage that it does not hide the other features drawn on the toposheet.

True or False?

A

False,

Contour has an advantage that it does not hide the other features drawn on the toposheet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Contour:

Contours are drawn at _________ intervals in _______ colour. Generally 20m interval is followed in 1:50,000 and 50m interval in 1:250,000 toposheet.

A

regular, brown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Contour:

Every ________ contour is a dark line to enhance map reading.

A

fifth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Contour:

The value of contour is printed by not breaking the contour line and also not given at the edge of the toposheet.

True or False?

A

False,

The value of contour is printed by breaking the contour line and also given at the edge of the toposheet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Contour:

Generally contours never cut or cross each other. But, in case of water fall and cliffs, contours almost touch a same point or a line. In overhanging cliff, the contours cut each other.

True or False?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Contour:

It is an exact point on a map with an elevation recorded beside it that represents its height above a given datum.

A

Spot height

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Contour:

It is the difference between the succeeding and preceeding contour values.

A

Contour Interval

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Contour:

On a contour map, __________ is a low circle-shaped hill on the end of the spur

A

Knoll

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Contour:

On a contour map, ________ is where contours form a U or V shape pointing away from higher land.

A

Spur

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Contour:

On a contour map, _____________ is the sudden drop in height at edge of plateau.

A

Escarpment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Contour:

On a contour map, ________ is when contours are on top or almost on top of each other.

A

Cliff

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Contour:

On a contour map, ________ is called when contours on both sides of a narrow valley are very steep.

A

Gorge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Contour:

On a contour map, _______ is where contours form a V or U shape pointing to higher ground.

A

Valley

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Contour:

On a contour map, __________ flows downhill and contours point to higher ground.

A

River

40
Q

Contour:

On a contour map, _________ is a lower area between two areas of higher land.

A

Saddle

41
Q

Contour:

On a contour map, _________ _______ is where contours are in a circle or oval shape.

A

Round Hill

42
Q

Contour:

On a contour map, __________ is a large, generally a level, elevated area.

A

Plateau

43
Q

Contour:

On a contour map, in _______ slope, contour lines are close together.

A

Steep

44
Q

Contour:

On a contour map, in _______ slope, contour lines are evenly/widely spaced, well spaced.

A

Gentle

45
Q

Contour:

On a contour map, ______ ______ is when contours are very widely spaced.

A

Flat Land

46
Q

Contour:

It is the vertical distance between adjacent contour lines.

A

Contour interval

47
Q

Contour:

A line connecting points of equal elevation. It may be marked with its elevation in feet above sea level.

A

Contour line

48
Q

Contour:

The vertical distance of a point above a reference plane. On a topographic map, the plane is usually mean sea level.

A

Elevation

49
Q

Contour:

The distance in elevation between the top of an object (a hill, tower, etc.) and its base.

A

Height

50
Q

Contour:

The difference in elevation between the highest point and the lowest in an area, or as shown on a topographic map.

A

Relief

51
Q

Contour:

A map showing the shape of the land surface. Commonly it also depicts forests, grasslands, and cultural features like communities, highways, and railroads.

A

Topographic map

52
Q

Contour:

The set of physical features - mountains, hills, valleys, and other landforms- that characterizes a landscape.

A

Topography

53
Q

Major/Minor Terrain Features:

It is a point or small area of high ground.

A

Hill

54
Q

Major/Minor Terrain Features:

When you are on a hilltop, the ground slopes down in all directions.

True or False?

A

True

55
Q

Major/Minor Terrain Features:

It is a line of high ground with height variations along its crest.

A

Ridge

56
Q

Major/Minor Terrain Features:

The ridge is not simply a line of hills; all points of the ridge crest are higher than the ground on both sides of the ridge.

True or False?

A

True

57
Q

Major/Minor Terrain Features:

It is reasonably level ground bordered on the sides by higher ground.

A

Valley

58
Q

Major/Minor Terrain Features:

A valley may or may not contain a stream course.

True or False?

A

True

59
Q

Major/Minor Terrain Features:

A valley generally has maneuver room within its confines.

True or False?

A

True

60
Q

Major/Minor Terrain Features:

Contour lines indicating a valley are U-shaped and tend to parallel a stream before crossing it. The course of the contour line crossing the stream always points upstream.

True or False?

A

True

61
Q

Major/Minor Terrain Features:

It is a dip or low point along the crest of a ridge.

A

Saddle

62
Q

Major/Minor Terrain Features:

A saddle is not necessarily the lower ground between two hilltops; it may be a break along an otherwise level ridge crest.

True or False?

A

True

63
Q

Major/Minor Terrain Features:

It is a low point or hole in the ground, surrounded on all sides by higher ground.

A

Depression

64
Q

Major/Minor Terrain Features:

It is similar to a valley, except that it normally is a less developed stream course in which there is generally no level ground and, therefore, little or no maneuver room. The ground slopes upward on each side and toward the head of the draw.

A

Draw

65
Q

Major/Minor Terrain Features:

Draws are caused by flash floods and can be found on flat terrain but are more often found along the sides of ridges. Contour lines indicating a draw are shaped like a “V” with the point of the “V” toward the head of the draw (high ground).

True or False?

A

True

66
Q

Major/Minor Terrain Features:

It is a usually short, continuously sloping line of higher ground, normally jutting out from the side of a ridge.

A

Spur

67
Q

Major/Minor Terrain Features:

A spur is often formed by two thoroughly parallel streams cutting draws down the side of a ridge

True or False?

A

True

68
Q

Major/Minor Terrain Features:

It is a vertical or near-vertical slope. It may be shown on a map by contour lines being close together, touching, or by a ticked “carrying” contour line. The ticks always point toward lower ground.

A

Cliff

69
Q

Five Different Types of Contours:

It is where a contour is shown by heavier line at regular intervals on a topographic maps.

They are usually drawn every 5th contour and carry the contour number or elevation designation.

A

Index Contours

70
Q

Five Different Types of Contours:

____________ is where the four lighter weight contours found between the index contour.

In a certain portion of the map where the intermediate contours are so closely spaced as they nearly unite or merge into a single line, it is standard practice for readability not to portray the line for short distances. This technique is called ____________.

A

Intermediate Contours, feathering

71
Q

Five Different Types of Contours:

These are drawn to show low spots as excavations around which contour close.

A

Depression Contours

72
Q

Five Different Types of Contours:

They are drawn as dashed lines or lines that begin and end when they approach the areas where the regular contours close in on each other.

Certain portions of the map area sometimes are so flat or level that the contours are too far apart to show properly important breaks in the terrain.

A

Supplementary/ Auxillary Contours

73
Q

Five Different Types of Contours:

In some instance, contour accuracy cannot be definitely determined. The area may be inaccessible on the ground or it may be difficult to interpret contours from aerial photographs when heavy cloud or shadow occurs to portray reasonable idea o relative elevations, the map markers has to make an educated guess rather than have a blank area in the map.

A

Approximate Contours

74
Q

Contour Characteristics:

Every point on the same contour line has a different elevation.

True or False?

A

False,

Every point on the same contour line has the same elevation.

75
Q

Contour Characteristics:

Every contour closes on itself, either within or beyond the limits of the map.

True or False?

A

True

76
Q

Contour Characteristics:

A contour which closes within the limits of the map indicates a _______ or a depression. Contours which increase in elevation represent _____; those which decrease in elevation portray ________ or excavations.

A

summit, hills, valleys

77
Q

Contour Characteristics:

Contours on the ground cannot cross one another except where an overhanging cliff, a vertical ledge or wall is represented on the map.

True or False?

A

True

78
Q

Contour Characteristics:

Contours are spaced evenly on a uniform slope.

True or False?

A

True

79
Q

Contour Characteristics:

Contours are straight and parallel to each other on a plane surface.

True or False?

A

True

80
Q

Contour Characteristics:

Irregular contours does not signify rough, rugged terrain.

True or False?

A

False,

Irregular contours signify rough, rugged terrain.

81
Q

Contour Characteristics:

The horizontal distance between adjacent contours indicates the steepness of the slope of the ground. Where the contours are relatively close together, the slope is comparatively steep; where the contours are far apart, the slope is gentle.

True or False?

A

True

82
Q

Contour Characteristics:

Contours cross curbs and crowned sloping streets in typical U-shaped curves.

True or False?

A

True

83
Q

Contour Characteristics:

In valleys, contour lines form a V pattern when crossing streams. The apex of the V always points upstream (uphill).

True or False?

A

True

84
Q

Contour Selection of Contour Interval (factors to consider):

The time and expense of field and office work is given important consideration.

The (smaller or larger) the interval, the (greater or lesser) is the amount of field work, reduction, and plotting required in the preparation of the map. The cost of the map will be higher as the contour interval is reduced.

A

Relative Cost

smaller, greater

85
Q

Contour Selection of Contour Interval (factors to consider):

Close contouring will be required when the map is to be utilized for the detailed design of engineering construction or for the measurement of earthwork quantities.

A (wider or steeper) interval will be required for surveys of reservoirs, drainage areas, and lines of communication.

A

Purpose of the map

wider

86
Q

Contour Selection of Contour Interval (factors to consider):

Determine the factor to consider.

Rugged terrain will require a (larger or smaller) interval than gentle and rolling country. To portray adequately flat ground a relatively small interval must be specified.

A

Nature of the terrain

larger

87
Q

Contour Selection of Contour Interval (factors to consider):

The contour interval should be in inverse ratio of the scale of the map.

If the map is reduced, the interval must be (increased or decreased); otherwise line are crowded, confuse the map user, and may possibly obscure some important map details.

A

Scale of the map

increased

88
Q

Contour Selection of Contour Interval:

In the design of topographic maps, the contour interval is commonly fixed at multiples of 0.5, 1, 2, 5, 10, 20, 50, and 100 meters.

True or False?

A

True

89
Q

Contour Selection of Contour Interval:

For general types of terrain, the contour interval used maybe as follows:

Flat to gently rolling: ________ m
Hilly: ________ m
Mountainous: ________ m

A

Flat to gently rolling: 1 to 5 meters
Hilly: 5 to 20 meters
Mountainous: 25 to 100 meters

90
Q

It is a representation of the earth’s surface and most of its features such as roads, buildings, vegetation, etc. To identify these features on a map, they are represented by symbols and colors.

A

Map

91
Q

A cross-sectional view along a line drawn through a portion of a topographic map. One can think of a profile as a slice through a portion of the terrain (as you were slicing a cake and looking at the vertical face the slice).

A

Profile

92
Q

Curves:

It is a single arc of a circle, which is tangential to both the straight lines of the route

A

Simple curve

93
Q

Curves:

It consists of two or more consecutive simple curves having different radius but have common tangent.

A

Compound curve

94
Q

Curves:

It is formed by two circular simple curves having a common tangent but lies on opposite sides.

A

Reverse curve

95
Q

Curves:

It lies between the PT of the preceding curve and the PC of the next curve.

A

Intermediate tangent

SURVEYING QUIZ 3 (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions