In a given closed traverse the sum of the south latitudes exceeds the sum of the north latitudes by 4.55 m and the sum of the east departures by exceeds the sum of the west departures by 2.83 m, determine the linear error of closure, bearing of the side of error, and the precision of the survey performe
In a given closed traverse the sum of the south latitudes exceeds the sum of the north latitudes by 4.55 m and the sum of the east departures by exceeds the sum of the west departures by 2.83 m, determine the linear error of closure, bearing of the side of error, and the precision of the survey performe
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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In a given closed traverse the sum of the south latitudes exceeds the sum of the north latitudes by 4.55 m and the sum of the east departures by exceeds the sum of the west departures by 2.83 m, determine the linear error of closure, bearing of the side of error, and the precision of the
Transcribed Image Text:1. A new road is to be constructed with formation width of 25 m, side slopes of 1 vertical to
2.5 horizontal. The heights of fill at the center line of three successive cross sections, 50
m apart, are 3.3 m, 4.1 m, and 4.9 m, respectively. The existing ground has a cross fall of
1 in 10. Calculate the volume of the fill.
2. From the current meter notes taken on the Masiu River (table below). All measurements
are in meter.
Depth of
observation
Dist.
Depth
Time (sec)
Rev.
Vel.
33 (WE)
46
2.6
0.7
49.0
70
0.32
2.1
50.0
50
0.22
60
3.4
0.65
49.8
90
0.40
2.75
55.0
60
0.24
75
85 (WE)
2.2
1.30
53.0
60
0.21
A. Compute the total discharge in liters per second
B. Compute the total cross sectional area in sq.m.
C. Compute the mean velocity in m/sec
3. A hydrographic survey was performed on Lake Chui. Upon processing the data it was
found that the cross sectional area of the lake can be modelled as a function of the depth
using equation:
A=84.9+8.4h+4.0h²
a. Assume value of depth of water then calculate the capacity of the lake in m³
b. Calculate the increase in capacity of the lake if the heavy rainfall caused the
depth to the rise by 2 meters of your assumed depth in m³
4. In a given closed traverse the sum of the south latitudes exceeds the sum of the north
latitudes by 4.55 m and the sum of the east departures by exceeds the sum of the west
departures by 2.83 m, determine the linear error of closure, bearing of the side of error,
and the precision of the survey performed.
5. A square piece of land 60x60 m is to be leveled down to 6m above elevation zero. To
determine the volume of earth be removed by the Borrow-Pit Method the land is divided
into 9 squares whose corners are arranged as follows with the corresponding elevations,
in meters, above elevation zero. Find the volume of cut in cu.m by u8nit area basis.
A=29.8, B=27.3, C=25.2, D=28.3, E=26.5, F=24.3, G=26.9, H=23.3, I=24.2, J=21.3,
K=22.6, L=20.5, M=21.1, N=18.5, O=17.8, P=20.5
Transcribed Image Text:1. A new road is to be constructed with formation width of 25 m, side slopes of 1 vertical to
2.5 horizontal. The heights of fill at the center line of three successive cross sections, 50
m apart, are 3.3 m, 4.1 m, and 4.9 m, respectively. The existing ground has a cross fall of
1 in 10. Calculate the volume of the fill.
2. From the current meter notes taken on the Masiu River (table below). All measurements
are in meter.
Depth of
observation
Dist.
Depth
Time (sec)
Rev.
Vel.
33 (WE)
46
2.6
0.7
49.0
70
0.32
2.1
50.0
50
0.22
60
3.4
0.65
49.8
90
0.40
2.75
55.0
60
0.24
75
85 (WE)
2.2
1.30
53.0
60
0.21
A. Compute the total discharge in liters per second
B. Compute the total cross sectional area in sq.m.
C. Compute the mean velocity in m/sec
3. A hydrographic survey was performed on Lake Chui. Upon processing the data it was
found that the cross sectional area of the lake can be modelled as a function of the depth
using equation:
A=84.9+8.4h+4.0h²
a. Assume value of depth of water then calculate the capacity of the lake in m³
b. Calculate the increase in capacity of the lake if the heavy rainfall caused the
depth to the rise by 2 meters of your assumed depth in m³
4. In a given closed traverse the sum of the south latitudes exceeds the sum of the north
latitudes by 4.55 m and the sum of the east departures by exceeds the sum of the west
departures by 2.83 m, determine the linear error of closure, bearing of the side of error,
and the precision of the survey performed.
5. A square piece of land 60x60 m is to be leveled down to 6m above elevation zero. To
determine the volume of earth be removed by the Borrow-Pit Method the land is divided
into 9 squares whose corners are arranged as follows with the corresponding elevations,
in meters, above elevation zero. Find the volume of cut in cu.m by u8nit area basis.
A=29.8, B=27.3, C=25.2, D=28.3, E=26.5, F=24.3, G=26.9, H=23.3, I=24.2, J=21.3,
K=22.6, L=20.5, M=21.1, N=18.5, O=17.8, P=20.5
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