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 factor of 100. The following data was recorded as observed for points B & C. Vertical Stadia Hair Readings (m) ROD/Point Angle Upper Middle Lower В - 25°15' 2.316 1.877 1.438 -45°57' 3.333 2.011 0.689

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 factor of 100. The following data was recorded as observed for points B & C. Vertical Stadia Hair Readings (m) ROD/Point Angle Upper Middle Lower В - 25°15' 2.316 1.877 1.438 -45°57' 3.333 2.011 0.689

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

(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
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. internally focusing telescope with a stadia interval factor of 100. The following data was recorded as observed for points B & c. The surveyor used an Vertical Stadia Hair Readings (m) RQD/Point Angle Upper Middle Lower -25°15' 2.316 1.877 1.438 C -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 C? (e) What is the elevation of point C if point A is at an elevation of +0316.15m above mean sea level? -end-
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 following data was recorded as observed for points B & C. stadia interval 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 (d) What is the slope distance between the ground surface at point B and the ground surface at C? (e) What is the elevation of point C if point A is at an elevation of +0316.15m above mean sea level?
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 factor of 100. The following data was recorded as observed for points B & C.(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 C?(e) What is the elevation of point C if point A is at an elevation of +0316.15m above mean sea level?
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 line of three-wire differential levels goes from benchmark Gloria to benchmark Carey. The length of the line was determined to be 2097 m. The instrument had a stated compensator accuracy of pm 1.4 mm/ km. The instrument–rod combination had an estimated reading error of 0.4 mm per 40 m. Sight distances were kept to approximately 50 5 m. If the observed difference in elevation is 15.601 m, what is the estimated error in the final elevation difference? If benchmark Gloria had a fixed elevation of 231.071 m and Carey had a fixed elevation of 246.660 m, did the job meet acceptable closure limits at a 95% level of confidence? Justify your answer statistically.
A stadia measurement was undertaken with a theodolite having an internal focusing telescope and stadia interval factor of 98.8. When a backsight was taken on a turningpoint whose elevation is 205.62 m, the rod interval observed was 1.94 m; and with thehorizontal hairs set at 1.50 m on the rod, the vertical angle reading was +13045’. For a foresight to a control point, the rod intercept was 1.17 m; and with the horizontal hairreading of 1.60 m on the rod, the vertical angle observed was -7018’. Determine the elevation of the line of sight at the instrument point and the elevation of the point on which the foresight was taken.
(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.
The following tacheometric observations were made from station A to stations 1 and 2. The height of the instrument above the ground was 1.52 m. Take stadia interval factor and constant as 100 and 0, respectively. If the staff was inclined by 1° to the vertical, solve for the following:a. Error in horizontal distance if the staff is inclined towards theinstrument for the line A-1. b. Error in the vertical distance if the staff is inclined away from theinstrument for the line A-2. c. If the elevation of point 1 is 115.673 m, determine the correctelevation of point 2.
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.
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?
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?