a) What is the stadia constant of the instrument? b) What is the stadia interval factor? c) What is the horizontal distance between points B & C? d) What is the difference in elevation between B & C?
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a) What is the stadia constant of the instrument?
b) What is the stadia interval factor?
c) What is the horizontal distance between points B & C?
d) What is the difference in elevation between B & C?
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- 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.)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-(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.
- 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?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 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?
- A Tachometer is set up at an intermediate point on a survey line PQ and the following observations were made on a vertically held staff. Staff intercept 1.235 m 1.115 m Axial hair readings 2.445 m 1.335 m Staff station Vertical angle 15° 20 ' 50" 12° 40 ' 10 " i) Compute length of the line PQ. 2.5 ii) Compute R.L of Q, if R.L of P is 189.66 m 2.5Problem 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?A line of three wire differential levels goes from benchmark Gloria to benchmark carey.the length of the lines was determined to be 2097 m.the instrument had a stated compensator accuracy of 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 +-5m if the observed difference in elevation is 15.601,what is the estimated error in the final elevation difference?
- 1. A tachometric surveying was performed by a surveyor. The transit used has a stadia interval factor of 90.98 and stadia constant of 0.16m the instrument was set at station O on the line between station C and E. The following stadia readings were taken Position of staff Vertical angle 7-18°37'02" 6°15'58" Station C Station E upper 1.432m 2.825m Stadia hair reading center 1.195m 2.049m Determine the horizontal and vertical distance between C and E lower 0.957m 1.274mIn 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 line of three wire differential levels goes from benchmark Gloria to benchmark Carey. The length of the line was determined to be 1487 m. The instrument had a stated compensator accuracy of ± 1.5 mm/km. The instrument-rod combination had an estimated reading error of ±0.2 mm per 40 m. Sight distances were consistently kept to approximately 50 ± 5 m. If the observed difference in the elevation in 23.4516m, what is the estimated error in the final elevation difference?