In 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 near A 1.455 2.341 Instrument near B 0.978 1.957 Reading at A Reading at B 0.081 0.098 O 0.046 O 0.066

In 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 near A 1.455 2.341 Instrument near B 0.978 1.957 Reading at A Reading at B 0.081 0.098 O 0.046 O 0.066

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Module 03- Coursework Activity 03 Complete the Differential Leveling Notes by providing data to the unknown quantities. STA FS BM1 TP1 TP2 BM2 BM3 TP3 BM4 BS 1.256 1.116 1.228 1.189 1.070 1.831 HI 1.886 1.527 2.246 2.017 2.656 2.765 ELEV 127.133
a) agr sactar sats its ingusuhents in surveying. b) The readings (2.312, 1.185, -2.365, 0.195, 0.885, 1.345, 0.905) were taken with a level. The instrument was shifted after the 4 reading. The negative reading was taken with the staff inverted from a point below a sunshade. Find the reduced levels of all the points if the first reading was to a BM of assumed RL 100.00.
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During the dumpy level test, the observations are as follows:Staff reading stationAInstrument placedB2.2353.545AB1.6052.564Distance between A and B is 250 m and R.L of A is 435.062 m, Find the R.L of B.
a) In the process of taking a rod reading, one can eliminate parallax mathematically. Parallax is basically a systematic error. True False b) The page check in the field notes is a quality control measure to determine if the user satisfied 1st order class I leveling. True False C) The upper cross hair reading was 8.00 ft. The lower cross hair reading was 6.00 ft. The stadia constant was 100. The horizontal distance from the center of the level to the face of the level rod = 200.0 ft. True False
Two pegs A and B are driven in the ground at a distance of abour 120 m. A dumpy level is set up at station Q exactly mid-way between pegs A and B. The staff readings on peg A and B were found to be 3.513 m and 3.149 m. The instrument was then moved and set up at a point P beyond peg A, in line BA produced at a distance of 20 m from A. The staff readings on pegs A and B were 1.763 m and 0.847 m respectively. What is the true difference in elevation between the two points? With the level in the same position at P what rod readings on B should the line of sight is adjusted. Check these reading against the true difference in elevation previously SOLVE THE FOLLOWING PROBLEMS: Problem Sketch Solution Answer
Two pegs A and B are driven in the ground at a distance of abour 120 m. A dumpy level is set up at station Q exactly mid-way between pegs A and B. The staff readings on peg A and B were found to be 3.513 m and 3.149 m. The instrument was then moved and set up at a point P beyond peg A, in line BA produced at a distance of 20 m from A. The staff readings on pegs A and B were 1.763 m and 0.847 m respectively. What is the true difference in elevation between the two points? With the level in the same position at P what rod readings on B should the line of sight is adjusted. Check these reading against the true difference in elevation previously determined. a. Sketch b. Solution C. Answer
The accompanying schematic arrangement of line portray a differential level route. Th values indicated represent back-sight and foresight readings taken at different points as labelled. Prepare the complete differential level notes for the information shown and the customary arithmetic check. STA. BS HI FS ELEV. BM1 2.35 356.65 TP1 1.37 3.28 TP2 3.08 2.04 ТРЗ 1.54 3.61 ТР4 0.85 3.69 BM2 3.07 Arithmetic Check: Elevation BM1+(SUMMATION OF BS) -(SUMMATION OF FS) =BM2 A. Height of the instrument at TP4. B. Elevation of TP4. C. Difference in elevation of TP1 and TP4.
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A tacheometer was set up at station P and observations were made to two stations Q and R. The vertical angles to Q and R were 5°30’ and 1°08’ The cross-hair readings at Q were 2.105, 2.47 and 2.835 and those at R were 2.215, 2.56 and 2.905. The staff were held vertical in both cases. The instrument constants were 100 and 0.3. The reading from P to a BM of RL 285.35m was 2.255. The horizontal angle QPR measured was 58°30’. Find the distance QR, the gradient from Q to R and the RLs of Q and R.
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In chain and compass traversing, the magnetic bearings of the survey lines are measured by a O a. dumpy level O b. chain O c. theodolite O d. compass