30 Apr WHAT IS THE MAXIMUM ERROR OF CLOSURE IN A MEASUREMENT OF 600M IF THE RELATIVE ACCURACY IS 1:3000?
From the lecture book Problem 4.1a What are the rod readings at the horizontal lines for the Foot(a) to the nearest .01 ft. and Metric (b) to the nearest ½ cm, Rods?
2). From the lecture book Problem 4.6. Reduce the accompanying set of differential leveling notes and perform the arithmetic check.
3). From the lecture book Problem 4.7. If the distanced leveled in Problem 4.6 is 1,000 ft. for what order of survey do the results qualify?
4). From the lecture book Problem 4.10. Reduce the accompanying set of profile notes, and perform the arithmetic check.
5). Levels were run from BM 100 to BM 100A. BM 100 has an elevation of 1201.196 ft. An elevation of 1234.567 ft was observed at BM 100A. It was later discovered that the level rod was 0.025 ft too short. If there were 14 TPs in the level run, what is the correct elevation of BM 100A? Assume that each pair of BS and FS distances was equal.
6). A level circuit is run a total distance of 7.1 mi from BM 20 to set three other benchmarks in the vicinity of a construction project. The given elevation of BM 20 is 1432.025 ft. When closing the level loop, its elevation is observed to be 1431.912 ft. What is the accuracy of the survey?
7). A distance of 546.75 ft is measured by a survey crew. The true distance is known to be 546.66 ft. What is the relative accuracy of the measurement?
8). What is the maximum error of closure in a measurement of 600m if the relative accuracy is 1:3000?
8 8
BM 61
Elevation=
320.20
FIGURE4 .32 Sketch for Problem 4.3.
4.4. Complete the accompanying set of differential leveling notes, and perform the arithmetic
check.
Station
BIM 3
BS (m)
1.613
1.425
1.307
1.340
HI (m) FS (m)
1.927
1.710
1.273
0.780
Elevation (m)
398.022
4.5. If the loop distance in Problem 4.4 is 700 m, at what order of survey do the results qualify? (Use
Table 4.2 or Table 4.3.)
4.6. Reduce the accompanying set of differential leveling notes, and perform the arithmetic check.
Station
BM 100
BM 100
BS (ft)
2.71
3.62
3.51
3.17
1.47
HI (ft) FS (ft) Elevation (ft)ORDER THIS PAPER NOW AND GET AN AMAZING DISCOUNT.
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