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Calculate the index error for an automatic level

Assignment Help Mechanical Engineering
Reference no: EM13862195

Question 1

Reduce the following level sheet showing all checks. Compute the adjusted reduced levels for all points.

BS

INT

FS

Rise

Fall

RL

Remarks

2.567

 

 

 

 

 

PSM 162 (RL = 37.855)

1.984

 

3.984

 

 

 

TBM A

0.355

 

0.768

 

 

 

TBM B

3.031

 

3.804

 

 

 

TBM C

0.783

 

2.547

 

 

 

TBM D

 

2.541

 

 

 

 

Natural Surface

 

2.895

 

 

 

 

Natural Surface

3.651

 

0.784

 

 

 

TBM E

3.981

 

2.189

 

 

 

TBM F

 

 

2.283 

 

 

 

PSM 162 (RL = 37.855)

 

 

 

 

 

 

 

Question 2

Calculate the index error for an automatic level based on the tabulated measurements below

Two Peg Test

At

To

Distance

Reading

Mid.Pt

501

30

2.136

Mid.Pt

502

30

1.826

502

502

1

1.625

502

501

60

1.959

Question 3

Line

Bearing

Distance

?E 

?N 

E 

 N

 

Deg

Min

Sec

metres

 

 

 

 

A

 

 

 

 

 

 

1000.000 

2000.000 

A-B

57

56

40

111.505

 

 

 

 

B-C

135

20

30

84.256

 

 

 

 

C-D

179

55

50

47.269

 

 

 

 

D-E

255

15

10

78.988

 

 

 

 

E-A 

 311

21 

20 

103.11 

 

 

 

 

 

 

 

 

 

 

 

 

 

From the closed traverse information above, compute coordinates of Stations B, C, D and E.

Question 4

Convert

(a) 2.5764o to Degrees Minutes Seconds

(b) 204o 39'43" to Degrees Decimals

Question 5

44_height difference.png

What is the height difference between A and B given the following measurements:

- the height of the instrument (hi) at A is 1.272m and the height of the target at B (ht) is 1.333

- zenith angle (z) and slope distance (s) is 82o 52'36" and 127.025m respectively.

Question 6

675_calculate the RL.png

The reduced level of 901 is to be determined by trig heighting from instrument station 1. Given the height difference from 1 to 728 is -0.421m and 1 to 901 is +1.527m. If the RL of 728 is 26.505m calculate the RL of 901.

Question 7

Given the bearing and direction of one line calculate the bearings of the remaining lines.

1159_bearings.png

Question 8

At Station

To

Face Left

Face Right

PM 01

PM02

244o55' 30"

64o55'28"

 

PM 03

45o00'10"

225o00'16"

Calculate the mean of the measured angle from the following observed bearings

Question 9

Distances were measured on all sides of the triangle ABC as shown below. Compute the values of internal angles in degrees minutes and seconds.

1595_the values of internal angles.png

Reference no: EM13862195

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