An elevation must be established on a benchmark on an island that is 520.02 ft from the nearest benchmark on the lake's shore. The surveyor lecides to use a total station that has a stated distance measuring ccuracy of +(3 mm + 3 ppm) and a vertical compensator accurate to vithin +0.4". The height of the instrument was 5.26 ft with an estimated error of +0.1 ft. The prism height was 6.00 ft with an estimated error of +0.01 ft. The single zenith angle is read as 96°07'34". The estimated errors in instrument and target centering are +0.003 ft. If the elevation

An elevation must be established on a benchmark on an island that is 520.02 ft from the nearest benchmark on the lake's shore. The surveyor lecides to use a total station that has a stated distance measuring ccuracy of +(3 mm + 3 ppm) and a vertical compensator accurate to vithin +0.4". The height of the instrument was 5.26 ft with an estimated error of +0.1 ft. The prism height was 6.00 ft with an estimated error of +0.01 ft. The single zenith angle is read as 96°07'34". The estimated errors in instrument and target centering are +0.003 ft. If the elevation

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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In a topographic survey undertaken by Karman Surv.Corp. before any leveling is conducted. The engineersusually check whether the engineers level is in perfectadjustment. A two peg test is used to check whether theline of sight is in perfect adjustment and the followingrod readings are taken, with instrument set up near A,backsight on A is 1.623 m. and foresight reading on B is2.875 m. with the instrument set up near B, backsight onB is 1.622 m. and foresight on A is 0.362 m. Compute the difference in elevation between Aand B. What should be the correct rod reading on A togive a level line of sight with the instrument stillset up at B? What should have been the reading on B with theinstrument at A to give a level line of sight?
A tachometric surveying was conducted to obtain some readings forinaccessible points, where it was found that the multiplying and additiveconstants are 98 and 0.1, respectively. The instrument was setup at point C and the readings listed in the table were taken while the staff was held vertically. Calculate the horizontal distance between BM and station D. Also, calculate the reduced level of station D. Figure 1 shows a schematic view of the site.
3. The following questions refer to the set of differential leveling notes shown in Table 2. a. Determine the elevation of each station. b. The elevation of BM 132 is known to be 153.235 m. The length of the level run was 780 m, with each station equally spaced. Adjust the elevation of each station such that the error is evenly spaced. Show sample calculations of your work. c. Determine the accuracy ratio and state whether the survey meets the requirement of an accuracy ratio of less than 1/3,000. Station BM 130 TP 1 TP 2 TP 3 BM K110 TP 4 BM 132 Table 2 BS [m] HI [m] 0.608 1.030 0.482 1.591 2.145 1.997 FS [m] Elevation [m] 153.285 1.525 0.736 2.83 1.885 1.795 0.321
I need Answer of A only A. A tachometric surveying was conducted to obtain some readings forinaccessible points, where it was found that the multiplying and additiveconstants are 98 and 0.1, respectively. The instrument was setup at point C and the readings listed in the table were taken while the staff was held vertically. Calculate the horizontal distance between BM and station D. Also, calculate the reduced level of station D. Figure 1 shows a schematic view of the site.
Surveying Question: A differential leveling circuit starts at benchmark Concrete Benchmark (Elevation=232.051m) goes out to an unknown benchmark and then continues to a known control point (Elevation=227.975m). Two turning points are used with the measurements included in the attached table. Determine the elevation of the unknown benchmark Determine the order and class of the survey. For First order Class 1: Allowable Error= +/- 4(K)1/2 Range of Constant= m less than/equal to 4 For First Order Class 2: Allowable error= +/- 5(K)1/2 Range of constant= m greater than/equal to 4, and m less than equal to 5 (between 4 and 5) For Second Order Class 1: Allowable error = +/- 6(K)1/2 Range of Constant = m greater than/equal to 5, and m less than equal to 6 (between 5 and 6) For Second Order Class 2: Allowable error = +/- 8(K)1/2 Range of Constant = m greater than/equal to 6, and m less than equal to 8 (between 6 and 8) For Third Order, Any Class: Allowable Error = +/-12(K)1/2 Range…
An elevation must be established on a benchmark on an island that is 2536.98 ft from the nearest benchmark on the island’s shore. The surveyor decides to use a total station that has a stated distance measuring accuracy of (3 mm +3 ppm) and a vertical compensator accurate to within 0.4”. The height of instrument was 5.37 ft with an estimated error of 0.05 ft. The prism height was 6.00 ft with an estimated error of 0.02 ft. The single zenith angle is read as The estimated errors in instrument and target centering are 0.003 ft. If the elevation of the occupied benchmark is 632.27 ft, what is the corrected benchmark elevation on the island? (Assume that the instrument does not correct for Earth curvature and refraction.) What is the estimated error in the computed benchmark elevation if the instrument has a DIN 18723 stated accuracy of +-3"?
An elevation must be established on a benchmark on an island that is 2536.98 ft from the nearest benchmark on the island’s shore. The surveyor decides to use a total station that has a stated distance measuring accuracy of (3 mm +3 ppm) and a vertical compensator accurate to within 0.4”. The height of instrument was 5.37 ft with an estimated error of 0.05 ft. The prism height was 6.00 ft with an estimated error of 0.02 ft. The single zenith angle is read as The estimated errors in instrument and target centering are 0.003 ft. If the elevation of the occupied benchmark is 632.27 ft, what is the corrected benchmark elevation on the island? (Assume that the instrument does not correct for Earth curvature and refraction.) After completing the job, the surveyor discovered that the instrument had a vertical indexing error that caused the sight line to be inclined by 15. (a) How much error would be created in the elevation of the island benchmark if the indexing error were ignored? (b) What…
Example 5) For the purpose of realizing the work of the dirt dam, the survey was repeated, and the level of the leveling figure was the level of the station (00 + 1) and its value was 12.06 m. All points were monitored, and all points were installed in one of the leveling device. What are the values of the expected levels for each point within the longitudinal and cross sections?
Problem In a topographic survey undertaken by Karman Sury. Corp. before any leveling is conducted, the engineers usually check whether the engineers level is In perfect adjustment. A two peg test is used to check whether the line of sight is in perfect adjustment and the following rod readings are taken, with instrument set up near A, on A is 1.623 m and foresight reading on B is 2.875 m with the instrument set up near B backsight on B is 1.622 m and a foresight on A is 0.362 m A. Compute the difference in elevation between A and B . B. What should be the correct rod reading on A to give a level line of sight with the instrument still set up at B? C. What should have been the reading on B with the instrument at A to give a level line of sight?
Research and discuss the basic errors or corrections under leveling datum in mean sea level. Then provide at least 2 sample applications of each error or correction.
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
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