Subject - Surveying A theodolite was set up at a station Aand a staff was kept at a station B.Reduced level of instrument axis andstation B was 170 m and 650 mrespectively, If the angle of elevationto a vahe 4 m above the foot of thestaff was 9° 30', determine thehorizontal distance between two stationsA and B in metres, Neglect the earth'scurvature and Refraction,

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A theodolite was set up at a station A and a staff was kept at a station B. Reduced level of instrument axis and station B was 170 m and 650 m respectively, If the angle of elevation to a vane 4 m above the foot of the staff was 9° 30, determine the

A theodolite was set up at a station A and a staff was kept at a station B. Reduced level of instrument axis and station B was 170 m and 650 m respectively, If the angle of elevation to a vane 4 m above the foot of the staff was 9° 30, determine the

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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The top of a tower signal at B 2000 m from A away was sighted through a transit with recorded vertical angle of 2deg30’. The height of the mast is 12 m and the HI of the transit above the point where it is set is 1.10 m. The elevation of the point under the transit A is 133.3 m. Compute the elevation of the base of the signal B. Consider the effects of curvature and refraction.
Please help with b, i & ii The slope distance between two stations A and B measured with EDM when corrected for meteorological conditions and instrument constants, is 113.893 m. The heights of the instrument and reflector are 1.739 m and 1.839 m, respectively, above the ground. To measure the vertical angle a theodolite was set up at A, 1.665 m above the ground and a target at B having height above the ground as 1.632 m. The measured angle above the horizontal was + 4°22′18″. Determine a. The horizontal length of the line AB. b. To what precision the slope angle be measured: i. if the relative precision of the reduced horizontal distance is to be 1/100000. ii. if the reduced horizontal distance is to have a standard error of ± 1.8 mm.
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.
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Briefly explain the method of leveling the instrument Theodolite?
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
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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.