Q1 (a) Q1(b) RL TBM A RL TBM B RL TBM A RL TBM B AAA.AAA ВBB.BB AAA.AAA ВВB.ВB 135.975 134.665 135.475 134.165 Q1. Table Ql shows the levelling data obtained from field observations between two temporary benchmarks namely TBM 1 and TBM 2, respectively. Where, the total levelling distance between TBM 1 and TBM 2 is 250 metres. As a junior site civil engineer at the construction site, you have been assigned by a senior site civil engineer to finalise and evaluate the levelling data to ensure the levelling work complies with the levelling standard and procedures. Table Q1 Intermediate Backsight Foresight Remarks Sight 1.592 TBM 1 RL= AAA.AAA m 1.379 Point 1 1.384 Point 2 1.406 Point 3 1.675 2.052 CP1 1.354 1.704 СР2 1.320 0.907 CP3 0.940 1.315 СР4 0.832 1.507 CP5 -2.938 Soffit 1 -2.833 Soffit 2 -2.717 Soffit 3 1.546 TBM 2 RL=BBB.BBB m a) Finalise the levelling calculation using rise and fall method, performed arithmetic check, accuracy check, levelling misclosure and final reduced level for all observed points. | b) For verification purpose you are required to re-calculate the reduced level using height of plain collimation (HPC) method, performed arithmetic check, accuracy check, levelling misclosure and final reduced level for all observed points.
Q1 (a) Q1(b) RL TBM A RL TBM B RL TBM A RL TBM B AAA.AAA ВBB.BB AAA.AAA ВВB.ВB 135.975 134.665 135.475 134.165 Q1. Table Ql shows the levelling data obtained from field observations between two temporary benchmarks namely TBM 1 and TBM 2, respectively. Where, the total levelling distance between TBM 1 and TBM 2 is 250 metres. As a junior site civil engineer at the construction site, you have been assigned by a senior site civil engineer to finalise and evaluate the levelling data to ensure the levelling work complies with the levelling standard and procedures. Table Q1 Intermediate Backsight Foresight Remarks Sight 1.592 TBM 1 RL= AAA.AAA m 1.379 Point 1 1.384 Point 2 1.406 Point 3 1.675 2.052 CP1 1.354 1.704 СР2 1.320 0.907 CP3 0.940 1.315 СР4 0.832 1.507 CP5 -2.938 Soffit 1 -2.833 Soffit 2 -2.717 Soffit 3 1.546 TBM 2 RL=BBB.BBB m a) Finalise the levelling calculation using rise and fall method, performed arithmetic check, accuracy check, levelling misclosure and final reduced level for all observed points. | b) For verification purpose you are required to re-calculate the reduced level using height of plain collimation (HPC) method, performed arithmetic check, accuracy check, levelling misclosure and final reduced level for all observed points.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:Q1 (a)
Q1(b)
RL TBM A
RL TBM B
RL TBM A
RL TBM B
AAA.AAA
BBB.BBB
ААА.АAА
ВВB.ВBB
135.975
134.665
135.475
134.165
Q1. Table Q1 shows the levelling data obtained from field observations between two
temporary benchmarks namely TBM 1 and TBM 2, respectively. Where, the total levelling
distance between TBM 1 and TBM 2 is 250 metres. As a junior site civil engineer at the
construction site, you have been assigned by a senior site civil engineer to finalise and
evaluate the levelling data to ensure the levelling work complies with the levelling
standard and procedures.
Table Q1
Intermediate
Backsight
Foresight
Remarks
Sight
1.592
TBM 1 RL= AAA.AAA m
1.379
Point 1
1.384
Point 2
1.406
Point 3
1.675
2.052
CP1
1.354
1.704
СР2
1.320
0.907
СРЗ
0.940
1.315
СР4
0.832
1.507
CP5
-2.938
Soffit 1
-2.833
Soffit 2
-2.717
Soffit 3
1.546
TBM 2 RL=BBB.BBB m
a) Finalise the levelling calculation using rise and fall method, i
accuracy check, levelling misclosure and final reduced level for all observed points. |
ormed arithmetic check,
b) For verification purpose you are required to re-calculate the reduced level using height
of plain collimation (HPC) method, performed arithmetic check, accuracy check,
levelling misclosure and final reduced level for all observed points.
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