2 2. The following are the observations made on thesame angle:47°26'13"| 47°26'18" | 47°26'10" | 47°26'15"47°26'16" | 47°26'12" | 47°26'09" | 47°26'15"47°62'13" | 74°26'20" | 47°26'14"| 47°26'18"Determine:The most probable value of the angleb. The range of angle measurementThe standard deviationа.с.d. The standard error of the meanThe 95% confidence limits using t = 2.26. Usethe formulaе.UC = x – tSxLC = x – tSz

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Answered: 2. The following are the observations…

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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(b) The following observations were made in a tachometric survey: Staff Vertical Hair Remark Inst. stadon Height of axis (m) station angle readings (m) - 5°30 0.905, 1.455, RL of BM 2.005 A 1.345 BM =450.500 m %3D + 8°0 0.755, 1.655, 2.555 1.345 + 10°0 1.500, 2.250, 3.000 1.550 Calculate the RLs of A, B, C, and the gradient of the line AC. The tachometer is fitted with an anallatic lens and the multiplying constant is 100.
Your survey instrument is at point "A". You take a backsight on point "B", (Line A-B has a backsight bearing of N 36°42'22" W) you measure 337°32'21" degrees right to Point C. What is the bearing of the line between points A and C? Os 59°10'01" W ON 59°10'01" W ON 69°32'23" E OS 69°32'23" E
(9) The following observations were made in a tacheometric Survey. Inst. Station A A B Hair Height staff vertical of axis station angle readings 1.345 BM 1345 B 1.550 -5° 30' 0.905, 1.455, 2.005 Remark RL of BM +8°0' 0.755,1.655, = 450-500 m +10 2.555 1.500, 2.250,3.000 Calculate the RLs of A, B and C, and horizontal distances AB and BC. The tacheometer is fitted with an anallatie Lens and the multiplying constant is 100
5) It is desired to determine the height of point B using point A whose height is 650.24 m. By installing Nivo (level) between A and B points, a reading is made as 564 mm on the Mira that is located in point A. Then the Nivo's binoculars were rotated and a forward reading of 3245 mm was made on the Mira held on point B. Based on this knowledge, what is the height of point B?
34 Assignment In order to carry out tacheometric surveying, following observations wer taken through a tacheometer set up at station P at a height 1.235m. Compute the horizontal distance of S from P and reduced level of statio at S if R.L. of station P is 262.575m Staff held Vertical at Dr Q R S Horizontal distance from P (m) 100 200 ? 20. K ENGIN Staff Reading (m) 1.01 2.03 3.465, 2.27, 1.280 2.03m 1.01m 100m 200m Angle of Elevation 0° 0° 5° 24' 40"
b) Ten measurements of an angle are given in Table 1. Compute the mean of the angle x, the standard error of a single measurement, and the standard error of the mean. Table 1 Observation No. Measured angle 1 31° 02' 29.3" 31° 02' 24.0" 3 31° 02' 27.9" 4 31° 02' 26.8" 5 31° 02' 26.1" 31° 02' 25.9" 7 31° 02' 26.1" 8. 31° 02' 27.8" 9. 31° 02' 27.2" 10 31° 02' 28.0"
When measuring a distance AB, and with respective to facing towards point B when standing at point A, the first taping pin was placed 1.35 ft to the left of line AB, the second pin was set 1.89 ft left of line AB, and the third pin was set 1.52 ft to the right of the line AB as the survey team attempted to correct their prior placements badly. The recorded distance was 734.33 ft. Calculate the corrected distance. (Assume four taped segments, the first three 200 ft each.)
3:14 م أنت الآن nt/1/CELS%202100%20Part%208%20%28C%29.pdf 4 /5 100% Q25. The length and angles obtained during surveying of a park with a 30 m tape is shown in the following Fig. 25. The tape used was 30 mm too long. 15 38 45 4.5 m 90 Fig. 25 i) Calculate the correct area of the park. 2.5 ii) Calculate the correct perimeter of the park. 2.5 Page 4 of 5 个 I
PROBLEM II 2 points B & C were observed from point A where the instrument was set up at a height of 1.25m. Points B & C are ahead of point A. The surveyor used an internally focusing telescope with a stadia interval following data was recorded as observed for points B & C. factor of 100. The Vertical Stadia Hair Readings (m) ROD/Point Angle Upper Middle Lower 25°15" 2.316 1.877 1.438 45°57 3.333 2.011 0.689 (a) What is the stadia constant of the instrument? (b) What is the slope distance between the telescope at point A and the rod reading at point B? (c) What is the difference in elevation between point B & C? (d) What is the slope distance between the ground surface at point B and the ground surface at (e) What is the elevation of point C if point A is at an elevation of +0316.15m above mean sea level?
A closed-loop traverse ABCDA was run around an area and the following observations were made: Length Included angle Station W.C.B. at to (m) A 187.4 86°30'02"| 140°11'40" B B 382.7 80°59'34"| C C 106.1 91°31'29" D D 364.8 100°59'15" A Adjust the angular error, if any, and calculate the coordinates of other stations if the coordinates of the station A are E1000 m and N1000 m.
Jr, a civil engineer was to estimate the height of a transmission tower (G). He performed trigonometric leveling from 3 stations E, Y&A, using slope distances and vertical angles. The survey data are as follows: SEG = 678.56; aEG= 5°30' Syg = 555.31; aye= 3°10' SAG = 900.31; a 46= 2°45' Elevations of stations above the MSL datum HE = 253.31 ft| Hy= 287.64 ft. H= 275.11 ft. Compute the elevation at the top of the cell tower from pt. Y Select the correct response: 412.35 ft 318.32 ft 253.32 ft 320.35 ft
Jr, a civil engineer was to estimate the height of a transmission tower (G). He performed trigonometric leveling from 3 stations E, Y&A, using slope distances and vertical angles. The survey data are as follows: SEG = 678.56; açEG= 5°30' Syg = 555.31; aye= 3°10' SAG = 900.31; a AG= 2°45' Elevations of stations above the MSL datum H: = 253.31 ft. Hy= 287.64 ft. H= 275.11 ft. Compute the elevation at the top of the cell tower from pt. E Select the correct response: 253.37 ft 318.35 ft 412.37 ft 320.32 ft

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