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 respectively. 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.

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 respectively. 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.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

5. Following observations were taken from two traverse stations by means of a tacheometer fined with an anallactic lens. The constant of the instruments is 100. Inst. station Staff station HI (m) 1.42 Bearing 220° 47' Vertical angle 81° 35' + 12°30' D B 1.40 Co-ordinate's of station A 226.3 N 184.8 W Co-ordinate's of station B 102.8 N. 96.4 W Compute the length and gradient of the line CD, if B is 6.00 m higher than A. -8° 35' Staff readings (m) 0.760, 1.590, 2.420 0.825, 1.845, 2.865
Express your answers in four decimal Places.
The following tacheometric observations were 'thade on two points P and Q from station A. Staff at Vertical Angle Staff Reading Upper Middle Lower P -5°12' 1.388 0.978 0.610 +27°35' 1.604 1.286 0.997 The height of the tacheometer at A above the ground was 1.55m. The stadia constant k and c are respectively 100 and 0.0m. Determine the elevations of P and Q if the elevation of A is 75.5 m Determine the horizontal distance between P and Q if Station A is between the two stations. Show an illustration of your work. « Previous Next
1.(a) Following observations were taken with a tacheometer for determining the R.L. of station A. Instrument Height of station Q Q Staff instrument station A 1.600 m 1.600 m 1.650 m B.M P P Vertical Angle +6°12' -4°12' +7°0' Staff reading 0.945, 1.675, 2.405 1.450, 2.380, 3.310 'X', 0.655, 1.255 Remark R.L. of B.M. = 421.625 Reading 'X'could not be observed The instrument was fitted with an anallactic lens, and the value of multiplying constant was 100.00. Calculate the R.L. of station A.
A tacheometer is setup at station A and the staff is held vertical at a point B. The telescope inclined at an angle of depression 10° to the horizontal, the readings on the staff are 2.680, 1.825, 1.000m. If the height of instrument (H! ) is 1.40m and R.L. of station A is 360.8 m, then the R.L. of point B is cm. [Take multiplying and additive constant of the instrument to be 100 and 1 respectively]
A line of three-wire differential levels goes from benchmark Gloria to benchmark Carey. The length of the line was determined to be 2199 m. The instrument had a stated compensator accuracy of +0.3". The instrument-rod combination had an estimated reading error of +1 mm/km. The instrument is found to have an inclined collimation error of 1.0 mm/km, so the sight distances were kept to approximately 50 ± 5 m. If the difference in elevation observed is 15.601 m, what is the estimated error in the final elevation difference?
Given the Bank of Level A of arbitrary elevation 18.52 m, it is required to determine the elevation of the Bank of Level F, the staff readings that appear in the field records were taken as illustrated in the figure, if the distance between benches is located 483 m away. Set differential leveling and let evidence of calculation verification or arithmetic verification. 0.88 0.84 h4 h5 bettded h6 C E3 Ah h1 1.55 A= 18,52 0.61 h2 B 1.87 h3 E2 1.53 D 0.50 h7 E4 1.42 h8 E 0.53 h9 E5 1.54 h10
A tacheometer fitted with an anallatic lens was used to observe the following:InstrumentStation W.C.B Staff Station VerticalAngle Staff Readings(m) C 320 0 A -12 0 0.906, 1.728, 2.550C 50 0 B + 10 0 0.744, 2.199, 3.654The value of the constant was 653and the staff was held vertically. Determine thelength R.L of A & B and gradient of AB
H.W/ the following details refer to reciprocal levels taken with a level. Instrument at station staff reading on remarks A Distance between A 1.505 2.875 A and B = 1150 m 0.750 1.895 R.L of B = 100 m Find: - 1- The true R.L of station A 2- The combined error curvature and refraction
A tower is located on a hilltop at T. Angular readings are taken with a theodolitefrom two instrumentation stations A and B, which are 50 m apart. Given the followingdata, determine the R.L. of hilltop at T and the tower height. Height of instrument (R.L.of instrumental centre) = 10 m. Vertical angles from A to the top and bottom of thetower at T is 35° and 28°(upward) respectively. Whole circle bearing of line AT, ABand BTis 25°, 110°, 5° respectively.
Problem 8: The following are the results of the measurement of a survey line between two tripod heads, where the tape was allowed to Sag Line AB Slope Length Vertical Angle Temperature Tension 25.510m 6° 00' 20 °C 80 N The Tape weighted 0.25 N/m; had cross sectional Area of 3mm2 and was actually 30.005 m long at the time of measurements. Where the nominal length of the tape is 30.0 m Calculate the corrected horizontal length of the Line AB
Problem 1. To determine the distance between two points A and B, a tacheometer was set up at P and the following observations were recorded. (a) Rod at A (b) Rod at B Rod readings = 2.225, 2.605, 2.985 Vertical Angle = + 7°54' Rod readings = 1.640, 1.920, 2.200 Vertical Angle = -1°46' (c) Horizontal Angle APB = +68°32'30" Elevation of A = 315.600m k = 100m c = 0.00m Determine the distance AB and the elevation of B.