1) 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 table below shows the data recorded as observed for points B & C. Answer the following. (Show complete figures and solutions) 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? Correct Figure 1 attachment Vertical Stadia Hair Readings ROD/Point Angle Upper Middle Lower B -25°15 2.316 1.877 1.438 -45°57' 3.333 2.011 e.689

1) 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 table below shows the data recorded as observed for points B & C. Answer the following. (Show complete figures and solutions) 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? Correct Figure 1 attachment Vertical Stadia Hair Readings ROD/Point Angle Upper Middle Lower B -25°15 2.316 1.877 1.438 -45°57' 3.333 2.011 e.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

The following data were obtained by stadia instrument: RR = 1.95 alpha = 18 degrees and 23 minutes s = 2.20m k = 95.5 HI = 1.62 m c = 0.30 Determine the difference in elevation (DE) of rod and instrument grounds
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 tachometric surveying was conducted to obtain some readings for inaccessible points, where it was found that the multiplying and additive constants 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. 2. Describe a practical procedure to measure the height of your house using tachometric surveying, list the procedure in bullet points.
The following data were obtained by stadia instrument: RR = 1.95 alpha = 18 degrees and 23 minutes s = 2.20m k = 95.5 HI = 1.62 m c = 0.30 Determine the difference in elevation (DE) of rod and instrument grounds Unit: meter
Q#1: A profile levelling is carried out and consecutive readings were observed on staff rod along a chain line at common interval of 10 meter which are listed below in table. First reading is taken on bench mark of 105.615 meter reduce level. Station Points Chainage (m) Staff Readings (m) Remarks BS IS FS 1 00 3.005 BM 2 10 2.285 3 20 1.560 4 30 1.785 5 40 2.105 6 50 2.875 3.105 CP 1 X 53.35 3.465 7 60 3.955 8 70 3.120 9 80 3.015 10 90 2.580 11 100 1.955 CP 2 Determine the reduce levels of all points using both line of collimation and rise and fall method. (Present your answer in table form).
A transit with a stadia interval factor of 100.8 was set at C on the line between points A and B, and the following stadia readings were observed. If the stadia constant is 0.381 m., determine the following: Length of line AB. Difference in elevation between points A and B. Find the horizontal distance from the transit to the rod held at B. Show the solutions and sketches.
P Give suitable examples as you discuss how errors in surveying activities are classified. The three angles of a triangle were measured using a triangulation scheme, and their mean values were reported as 50° 48′ 18′′, 64° 2036", and 64° 5100".Each of these means has a standard deviation of 4 according to analysis of each set.The angles were measured again at a later time under better lighting, resulting in mean values of 64° 20′ 39", 64° 50' 58", and 50° 48' 20" prime prime Each value's standard deviation was 2 n. Determine the most probable values of the angles
SURVEYING A 30 m tape is 1.2 cm wide and 0.080 cm thick. If the tape is correct under a pull of 54 N. Compute the error made by using a pull of 66 N. E = 2.1 GPa.
During the dumpy level test, the observations are as follows:Staff reading stationAInstrument placedB2.2353.545AB1.6052.564Distance between A and B is 250 m and R.L of A is 435.062 m, Find the R.L of B.
The surveying team used 30 m tape in measuring an inclined distance. The measured length on the slope was recorded to be 450.00m long. The difference in elevation between the initial point and the end point was found to be 1.25m. The 30 m tape is of standard length at a temperature of 10°C and a pull of 50N. During measurement the temperature reading was 15°C and tape was supported at both ends with an applied pull of 75 N. The cross-sectional area of the tape is 6.50 mm² and the modulus of elasticity is 200 GPa. The tape has a mass of 0.075 kg/m. K=0.0000116 m/°C. Determine the combined correction (temperature, pull and sag) per tape length to be applied
A dumpy level is set up at one end of a line 120 m long for the purpose of determining the instrument’s stadia interval factor. The line is marked by hubs at every 30 m and a stadia rod is held at each hub. The stadia intercepts at each location of the rod were observed as follows: 0.308, 0.613, 0.918 and 1.222 meters, respectively. The average value of the instrument’s stadia interval factor is:
A level line from P to Q is carried out to and fro direct leveling, and the height difference of the forward measurement is 12.380 meters, and the height difference of the back measurement is 12.411 meters. It is also known that the closed difference limit value of the previous test and the back test K is 20 mm (K is the number of kilometers), the forward measuring level is 4.2 kilometers long, and the back measuring level is 3.5 kilometers long. Try to find the average elevation difference from P to Q, and whether the round-trip test results meet the regulations, and please explain your answer.