topic: TacheometryPlease draw a diagram based on this Problem.(a) diagram of the problem(b) diagram with the computed unknown variables PROBLEM 3:A stadia measurement was undertaken with a theodolite having an internal focusingtelescope 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 +13°45'. For aforesight 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 -7°18'. Determine theelevation of the line of sight at the instrument point and the elevation of the point onwhich the foresight was taken.

For calculating the elevation of the line of sight at the instrument point we have to consider the…

Answered: PROBLEM 3: A stadia measurement was…

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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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 turning point whose elevation is 205.62 m, the rod interval observed was 1.94 m; and with the horizontal 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 hair reading 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.
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 turning point whose elevation is 205.62 m, the rod interval observed was 1.94 m; and with the horizontal hairs set at 1.50 m on the rod, the vertical angle reading was -13 degree 45’. For a foresight to a control point, the rod intercept was 1.17 m; and with the horizontal hair reading of 1.60 m on the rod, the vertical angle observed was +7 degree 18’. Determine the elevation of the line of sight at the instrument point and the elevation of the point on which the foresight was taken.
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.
A stadia measurement was undertaken with a theodolite having an internal focusing telescopel and stadia interval factor of 98.8. When a backsight was taken on a turning point whose elevation is 205.62 m, the rod interval observed was 1.94 m; and with the horizontal hairs set at 1.50 m on the rod, the vertical angle reading was +13°45'. For a foresight to a control point, the rod intercept was 1.17 m; and with the horizontal hair reading of 1.60 m on the rod, the vertical angle observed was -7°18'. Determine the elevation of the line of sight at the instrument point and the elevation of the point on which the foresight was taken.
A stadia measurement was undertaken with a theodolite having an internal focusing telescope and a stadia interval factor of 98.8. when a backsight was taken on a turning point whose elevation is 205.62m, the rod interval observed was 1.94m; and with the horizontal hairs set at 1.50m on the rod, the vertical angle reading was -13 45’. For a foresight to a control point, the rod intercept was 1.17m; and with the horizontal hair reading of 1.60m on the rod, the vertical angle observed was -15 30’. Determine the elevation of the line of sight at the instrument point and the elevation of the point on which the foresight was taken. SKETCH THE PROFILE PLEASE
A stadia measurement was undertaken with a theodolite having an internalfocusing telescope and stadia interval factor of 98.8. When a backsight was taken on a turning point whose elevation is 205.62 m, the rod interval observed was 1.94m; and with the horizontal hairs set at 1.50 m on the rod, the vertical angle readingwas +13⁰45’. For a foresight to a control point, the rod intercept was 1.17 m; andwith the horizontal hair reading of 1.60 m on the rod, the vertical angle observedwas -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.
A stadia measurement was undertaken with theodolite having an internal focusing telescope and a stadia interval factor of 98.8. When a backsight was taken on a turning point whose elevation is 205.62m, the rod interval observed was 1.94m; and with the horizontal hairs set at 1.50m on the rod, the vertical angle reading was -13°45’. For a foresight to a control point, the rod intercept was 1.17m; and with the horizontal hair reading of 1.60m on the rod, the vertical angle observed was +7°18’. Determine the elevation of the line of sight at the instrument point.
During testing of a dumpy level, the following observations were taken:- Instrument at A B Staff reading at A 1.035 1.115 B 2.115 2.050 Check whether the instrument is in proper adjustment. What should be the revised reading of line of collimation. When the instrument is at B? If A and B are 95 m apart then what is the angle of inclination of line of collimation?
Three trials of the measured angle were observed and the following data were recorded: Trial Measured Angle Time 42°31' 9:00:00 2 42°34' 9:02:00 3 42°36' 9:04:30 Find the standard error
O Surveying;# .(b) If the sensitivity of the bubble tube of a level is 30 of arc per division, determine the distance of a point at which the combined curvature and refraction correction become numerically equal to the error induced by dislevelment of one division of the level tube
Situation 1: A two-peg test is used to check whether the ine of sight of the level is in perfect adjustment and the following rod readings are taken, with instrument set up near A, backsight 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 and a foresight on A is 0.362 m. a. Find the difference in elevation. b. What should be the correct rod reading on A to give a level line of sight with instrument still set up near B? c. What should be the correct rod reading on B to give a level line of sight with instrument still set up near A?
A preengineering baseline was run down a very steep hill (see Figure). The vertical angle is turned to a point on a plumbed range pole that is 4.88 ft above the ground. The slope distance from the theodolite to the point on the range pole is 148.61 ft. The theodolite’s optical center is 4.66 ft (the height of the instrument) above the upper baseline station at110+71.25. If the elevation of the upper station is 377.93, what is the elevation of lower station? (15) What is the chainage (stationing) of the lower station? (10) Note: The chainage is computed in the horizontal plane

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