1. The following are the bearings taken on a closed compass traverse. Assuming that the observed bearing of line AB is correct, draw the figure, compute the interior angle and correct them for observational errors, adjust the bearings of the line, and tabulate the results. LINE FORWARD BEARING ВАСК ВEARING S 37° 30' E S 43° 15' W N 73° 00' W N 12° 45' E N 60° 00' E N 37° 30' W N 44° 15' E S 72° 15' E S 13° 15' W S 59° 00' W АВ BC CD DE EA
1. The following are the bearings taken on a closed compass traverse. Assuming that the observed bearing of line AB is correct, draw the figure, compute the interior angle and correct them for observational errors, adjust the bearings of the line, and tabulate the results. LINE FORWARD BEARING ВАСК ВEARING S 37° 30' E S 43° 15' W N 73° 00' W N 12° 45' E N 60° 00' E N 37° 30' W N 44° 15' E S 72° 15' E S 13° 15' W S 59° 00' W АВ BC CD DE EA
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Solve just like the solution below (PLEASE DO NOT CONVERT THE VALUES TO WHOLE CIRCLE BEARING).
Transcribed Image Text:1. The following are the bearings taken on a closed compass traverse. Assuming that the observed
bearing of line AB is correct, draw the figure, compute the interior angle and correct them for
observational errors, adjust the bearings of the line, and tabulate the results.
LINE
FORWARD BEARING
BACK BEARING
S 37° 30' E
S 43° 15' W
N 73° 00' W
N 12° 45' E
N 60° 00' E
N 37° 30' W
N 44° 15' E
S 72° 15' E
S 13° 15' W
S 59° 00' W
AB
BC
CD
DE
EA
![Sample Problem 5: Adjustment of an Open Compass Traverse
LINE
LENGTH
OBSERVED BEARINGS
Solving for the adjusted bearing of lines DE and ED:
FORWARD
ВАСK
5 25° 40' W
N 20° 25' W
N 35 30' E
AB
400.63 m
N 25° 45' E
S 20* 30' E
S 35 30'W
S 75° 30' E
BC
450.22
CD
500.89
a'de = N 35°30' E [ Best Line]
O, = 69° 00'
DE
640.46
N 75° 25' W
EF
545.41
N 58* 50' E
S 58° 15' W
FG
700.05
N 22° 05' E
S21° 55' W
0, = ?
d'de = 180° - (a'dc + Oa)
ďde = 180° - (35°30' + 69° 00')
a'de = S 75°30' E
[Adjusted bearing of DE]
D
w
0, = ?
Adjustment of line DE:
a'ed = N 75°30' w
[Adjusted bearing of ED]
D
Adc = N 35°3O' E
ade = S 75°3O' E
ade
Og = 180° - (adc + Ade)
0g = 180° - (35°30' + 75°30')
= 69° 00'](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffcf32215-841d-46d4-b7f7-5c97811fce5d%2F5999cddf-a39f-4bd7-a9da-1ee6e96cbc86%2Fp7o4av_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Sample Problem 5: Adjustment of an Open Compass Traverse
LINE
LENGTH
OBSERVED BEARINGS
Solving for the adjusted bearing of lines DE and ED:
FORWARD
ВАСK
5 25° 40' W
N 20° 25' W
N 35 30' E
AB
400.63 m
N 25° 45' E
S 20* 30' E
S 35 30'W
S 75° 30' E
BC
450.22
CD
500.89
a'de = N 35°30' E [ Best Line]
O, = 69° 00'
DE
640.46
N 75° 25' W
EF
545.41
N 58* 50' E
S 58° 15' W
FG
700.05
N 22° 05' E
S21° 55' W
0, = ?
d'de = 180° - (a'dc + Oa)
ďde = 180° - (35°30' + 69° 00')
a'de = S 75°30' E
[Adjusted bearing of DE]
D
w
0, = ?
Adjustment of line DE:
a'ed = N 75°30' w
[Adjusted bearing of ED]
D
Adc = N 35°3O' E
ade = S 75°3O' E
ade
Og = 180° - (adc + Ade)
0g = 180° - (35°30' + 75°30')
= 69° 00'
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