ASSIGNMENT 6
Textbook Assignment: Indirect Leveling/Level and Traverse Computations. Page 7-1 through
7-30.
Learning Objective: Recognize
characteristics and procedures
associated with barometric and
trigonometric leveling and
compute elevations.
61.
Barometric leveling is used to
measure the difference in
elevations by which of the
following methods?
1.
By measuring the slope angle
2.
By measuring the atmospheric
pressure
3.
By measuring the slope
distance
4.
By measuring the vertical
offset
6-2.
Barometric leveling is used
mostly in which of the following
types of surveys?
1.
Layout
2.
Route
3.
Reconnaissance
4.
Navigational
6-3.
The minimum number of altimeters
required for a two-base method of
barometric leveling is
1.
five
2.
two
3.
three
4.
four
6-4.
Barometric leveling should be
performed at what time of day?
1.
Midday
2.
2 to 4 hours before sunrise or
2 to 4 hours after sunset
3.
2 to 4 hours after sunrise or
2 to 4 hours before sunset
4.
2 to 4 hours before sunset or
2 to 4 hours after sunset
6-5.
You are to determine the difference
in elevation between two points by
trigonometric leveling. In doing
so, you should measure
1.
the horizontal distance and the
azimuth angle
2.
the vertical angle and then take
the stadia intercept
3.
the vertical and azimuth angle
and then take the rod reading
4.
the slope distance and then take
the stadia intercept
6-6.
When the horizontal distance is
measured, what trigonometric
function is used to help determine
the difference in elevation?
1.
Cosecant
2.
Secant
3.
Tangent
4.
Cotangent
6-7.
When the slope distance is
measured, what trigonometric
function is used to help determine
the difference in elevation?
1.
Tangent
2.
Cosine
3.
Sine
4.
Cotangent
6-8.
When the horizontal or slope
distance is measured by chaining,
which of the following corrections
must be computed before you
determine the difference of
elevation?
1.
Repair adjustment, sag, and
temperature
2.
Standard error, sag, and tension
3.
Sag, temperature, and standard
error
4.
Tension, heat, and number of
movements
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