ASSIGNMENT
2
Textbook Assignment: "Field Astronomy and Triangulation." Pages 15-24 through 15-41.
"Soils: Surveying and Exploration/Classification/Field
Identification."Pages 16-1 through 16-4.
Learning Objective: Identify
the principles and practices used
in the triangulation method of
surveying.
2-1.
What is the major difference
between traversing and
triangulation?
1.
Distances must be measured from
each station in triangulation
but not in traversing
2.
Distances must be measured from
each station in traversing but
not in triangulation
3.
Angles must be measured from
each station in triangulation
but not in traversing
4.
Angles must be measured from
each station in traversing but
not in triangulation
2-2.
What condition requires the
triangulation method to be used?
1.
When a high degree of precision
is required
2.
When EDMs are being used
3.
When chaining is not possible
due to terrain
4.
When angles cannot be turned
at each station due to
obstructions
2-3.
Which of the following duties
should the party chief perform
during a triangulation survey?
1.
Head chainman
2.
Rear chainman
3.
Note keeper
4.
Instrumentman
2-4.
Who should perform the computations
to determine horizontal locations
of the points in the triangulation
system?
1.
Rear chainman
2.
Instrumentman
3.
Office personnel
4.
Party chief
2-5.
In a triangulation system, the
beginning and ending distances
are measured for what purpose?
1. To establish base lines for
determining the distances of
the other lines
2. To begin and close the
triangulation net accurately
3. To establish base lines for
checking the computed distances
of the other lines
4. To provide the only distances
required for the survey
2-6.
What is one of the disadvantages
of using the chain of single
triangles?
1.
Cannot be used for narrow
areas
2.
Provides no means of
cross-checking computed
distances
3.
Cannot be used for inaccessible
points
4.
Requires the most calculations
of any method
2-7.
When discussing triangulation
figures, to what does a chain
of polygons refer?
1.
A single chain of triangles
2.
A chain of quadrilaterals
3.
Both 1 and 2 above
4.
A system of triangles forming
a polygon
8
