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- In the two-peg test method of a dumpy level, the following observations were taken. What is the difference in elevation between A and B in meters? * Instrument near A 1.455 2.341 Instrument near B 0.978 Reading at A Reading at B 1.957 0.933 0.887 0.949 O 0.871A line of levels was run from benchmarks A to B, B to C, and C to D. The elevation differences obtained between benchmarks, with their standard deviations, are listed below. What is the difference in elevation from benchmark A to D and the standard deviation of that elevation difference? (a) BM A to BM B = +12.68 ±0.10 ft; BM B to BM C = -8.23 ± 0.18 ft; and BM C to BM D = -14.66 ± 0.06 ft(b) BM A to BM B = -15.324 ± 0.022 m; BM B to BM C = -10.250 ± 0.015 m; and BM C to BM D = -16.892 ± 0.008 mA line of levels was run from benchmarks A to B, B to C, and C to D. The elevation differences obtained between benchmarks, with their standard deviations, are listed below. ▼ Part A If BM A to BM B=+36.48±0.12 ft, BM B to BM C = -71.92 +0.16 ft, and BM C to BM D = -82.43±0.08 ft, what is the difference in elevation from benchmark A to D? Express your answer in feet to five significant figures. elev AD = Submit Part B σ=+ ΙΫΠ ΑΣΦ Submit Request Answer What is the standard deviation of the elevation difference found in Part A? Express your answer in feet to two significant figures. IVE ΑΣΦ ||| 41 Request Answer vec vec 3 O ? ? ft ft
- QUESTION S In a two-peg test of a dumpy level, the following observations are taken. What is the true difference in elevation between A and B? Instrument at A Instrument at B Rod Reading on A Rod Reading on B 1.508 2.024 Rod Reading on A Rod Reading on B 0.938 1.449 QUESTION 6 1. The following data were taken from PEG method of adjustment. Point 1 is midway between A and B. Point 2 is 20m to the left of A and 120m from B. Determine the difference in elevation between A and B. (give your answer in two decimal places) Instrument at 2 Instrument at 1 3.0 2.75 2.0 1.508. A line of levels was run from benchmarks A to B, B to C, and C to D. The elevation differences obtained between benchmarks, with their standard deviations, are listed below. What is the difference in elevation from benchmark A to D? BM A to BM B = 34.65 ± 0.10 ft; BM B to BM C = -48.23 + 0.08 ft; and BM C to BM D D= -54.90 ± 0.09 ftComplete the field notes shown in table by computing and recording the elevation for each point. (Use any method you find suitable) BS 1.55 Point IS FS Rise/Fall HI Elevation (m) 1 233 2 2.75 0.58 3 0.82 4 1.83 1.10 2.58 6. 0.42 7 3.25 0.57 8. 1.86 9. 1.74 2.35 2.65 10 0.78 11 1.56 12 0.89 1.89 13 1.25 14 2.56 1.13 1.75 15 0.89 16 0.53 17 0.43 18 0.68 19 0.87 20 0.79
- A pipeline transporting natural gas is to be laid out on the side of a hill (from pt. A to pt. B) as shown in the figure. Trigonometric leveling was performed where a transit (with a stadia factor of 100.8 and stadia constant of 0.38) was set at pt. C somewhere between pts. A and B. The following readings were observed. How long is the inclined section of the pipe? Determine the material cost of the inclined pipe to be installed if the material costs P 5,000/meter.In a two peg test using a dumpy level, the following observations were taken: Instrument at C Instrument at D Rod reading on A 1.103 .568 Rod reading on B .991 .289 Point C is equidistant from A and B and D is 12m from A and 72 m from B. What is the true difference in elevation between A and B (in meters)? (answer in 3 decimal places) With the level in the same position at D to what rod reading on B should the line of sight be adjusted (in meters)? (answer in 4 decimal places) What is the corresponding rod reading on A for a horizontal line of sight with instrument still at D (in meters)? (answer in 4 decimal places)The following set of level noted is to be completed by employing the rise and fall method.based on the data given in the accompanying tabulation, the sum of all values to be tabulated under the rise and fall colums should, respectively, be equal to?answer. 1.82m and 1.97m show solution please.The difference between the reduced level of point a and the reduced level of point d is?answer. 1.29m show solution please
- QUESTION 3 A levelling fieldwork was conducted to determine the profile of an existing road that runs road under a bridge. The headroom is also needed for future reference. Using the data given Table Q3, complete a levelling book and determine the headroom. Perform all necessary checks. Table Q3 Staff Readings Remarks 2.458 (BS) ; 2.366 (FS) ; 2.262 (BS) 2.775 (IS) ТВМ 1 TBM 1 (24.904m ) СР1 H1 1.625 (IS) H2 1.515 (IS) H3 1.713 (FS) ; 2.358 (BS) СР2 2.495 (FS) ; 1.198 (BS) 3.001 (IS) СРЗ J1 1.567 (IS) J2 1.2 (IS) 2.08 (IS) J3 H5 1.802 (IS) H6 H6 (road surface immediately below H7) -4.078 (IS) H7 H7 (underside of bridge) 1.084 (FS) ; 1.441 (BS) СР4 1.299 (IS) J8 2.606 (IS) K4 1.284 (IS) КЗ 1.816 (IS) 3.001 (FS) K2 ТВМ 2 TBM 2 (23.967m ) BS= BACKSIGHT ; IS = INTERMEDIATE SIGHT ; FS = FORESIGHTB) Based on the data given below, calculate the reduced levels of all points using rise and fall method and apply necessary checks. Consider the RL of BM as +783.210m. Point BM A B C DEFGH BS 0.922 0.412 3.230 2.525 IS 2.165 1.450 3.675 0.762 FS 1.382 1.630 3.015 0.471In the two-peg test method of a dumpy level, the following observations were taken. Determine the error in the line of sight in meters. Instrument Instrument near A 1.455 2.341 near B Reading at A Reading at B 0.978 1.957 O 0.081 0.098 0.046 O 0.066