Roads I Pop Quiz

Question 1

Topographic Surveys: Serves to establish the location of ________ on the land.

Answer 1

Existing features

Question 2

Topographic surveys:
-Natural features: streams, lakes, swamps rock outcrops, large trees, and others.
-Cultural features: existing man-made structures such as: ________
*Most important: provides information about the _______ of the land.
-_____________ are measured at several selected points.
-__________ of hills, ridges, valleys, slopes on the ground surface are determined.

Answer 2

Buildings, roads and bridges
Shape
Ground elevations
Positions

Question 3

Topographic Mapping: What is the chief characteristic of a topographic map?
All topographic maps feature the graphical depiction of _________ by the use of _________ (lines of equal _________)

Answer 3

Surface Relief
Contour Lines
Elevation

Question 4

The first step to prepare a topographic map is to establish the _____________ framework.
A) Obtain ________
provided by a traverse that encompasses area to be mapped.
B) Select an appropriate
____________
C) Establish _____________
D) Plot _________ (coordinate method)

Answer 4

Horizontal control
Survey data
Scale
Gridlines
Plot traverse

Question 5

Control Survey: We must be conscious of the _________ of having a well referenced survey control. If the control points are _________ ,all following survey data, as well as the mapping and any resulting design will also be inaccurate.

Answer 5

Importance
Inaccurate

Question 6

Scale: Defining scale as it pertains to a map:
Scale is the relationship between the length of a _______ on the ________ and the
actual ______ that the same line represents in the ________
a) What is the meaning of RF? ____________ _________
b) RF: _______ distance: _____ distance
c) The _______ must be ______ on both sides.
d) Example: Convert a scale of 1 inch = 400 ft to a RF.

Answer 6

Line
Drawing
Distance
Field
Representative Fraction
Map
Field
Unit
Same

Question 7

Map Scales
-Large scales: Shows features in a ___________
* For ________ , design and quantity estimating for engineering. RF values from___________
-Medium: RF values from ____________
-Small: For _____________ or __________ projects.
*Useful for urban or regional _________ planning.
*more than _______ up to ________

Answer 7

Bigger size
Detailed Layout
1:100 to 1:2000
1:2000 to 1: 10 000
Preliminary design
Large scale
Land-use
1:10 000
1: 1 000 000

Question 8

Topographic Map Legends: Topographic maps use color to define the following features:
Black: ________
Brown: _________
Red: ________
Green: ________
Blue: ___________

Answer 8

Man-made features.
Topography, surface features
Roads, highways.
Vegetation features.
Water, hydrology.

Question 9

Standard Map Features: The following items should always be included on a topographic map
1. ______
2. ___
3. ____

Answer 9

1. Scale
2. Title block.
3. North arrow

Question 10

Precision:
The following aspects should be considered with respect to the level of precision:
-Some detail ____ be precisely defined and located.
*Ex: _______, bridge beams, _______
*They are ________ points.
-Some detail _______ be precisely defined and located.
*Ex: ______, ________
limits of ________ tops and bottoms of _______
They are _______ stable points.

Answer 10

Can
Building corners, railway tracks
Stable
Cannot
Stream banks, edges of gravel roads
Wooded areas, slopes
Not

Question 11

Topographic Features for Mapping
The most common topographic features that are considered for best mapping accuracy are the following:
-Summits and ______, Valleys and low points,
-_________ lines, _________ corners, Regularly spaced points.

Answer 11

High points
Boundary, building

Question 12

Contours
a) Contour Lines: are drawn by joining points of ______
(Contour lines may be compared to shorelines, but are above (or below) sea level.)
b) A Contour Interval is the determined _________ between the contour lines.
c) An Index Contour is darker, identified, and usually at every _____.

Answer 12

Equal elevation
Vertical Interval
5th

Question 13

d) State two important rules for contour lines

Answer 13

Never end
Never cross other lines.

Question 14

e) What is the basic assumption for distance between contour line intervals?

Answer 14

The ground is assumed to slope at a uniform rate between contour lines.

Question 15

f) Closely spaced Contour lines represent _______
g) Widely spaced contour lines represent ________

Answer 15

Steeper slopes.
Gentle slopes