Answered: The difference of elevation between B…

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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An elevation must be established on a benchmark on an island that is 2536.98 ft from the nearest benchmark on the island’s shore. The surveyor decides to use a total station that has a stated distance measuring accuracy of (3 mm +3 ppm) and a vertical compensator accurate to within 0.4”. The height of instrument was 5.37 ft with an estimated error of 0.05 ft. The prism height was 6.00 ft with an estimated error of 0.02 ft. The single zenith angle is read as The estimated errors in instrument and target centering are 0.003 ft. If the elevation of the occupied benchmark is 632.27 ft, what is the corrected benchmark elevation on the island? (Assume that the instrument does not correct for Earth curvature and refraction.) After completing the job, the surveyor discovered that the instrument had a vertical indexing error that caused the sight line to be inclined by 15. (a) How much error would be created in the elevation of the island benchmark if the indexing error were ignored? (b) What…
Reciprocal leveling gives the following readings in meters from a set up near A: on A, 1.110; on B, 0.887, 0.995, and 0.884. At the setup near B: on B, 1.549; on A, 1.673, 1.670, and 1.666. The elevation of A is 1045.343 m. Determine the misclosure of B. Express your answer to three decimal places and include appropriate units. Misclosure = Submit Part B elevB = μÁ Value Request Answer CHA Value Units Determine the elevation of B. Express your answer to three decimal places and include appropriate units. Units ? ?
Can differential leveling be combined with trigonometric leveling in an adjustment? Explain how you would handle their relative qualities in a least squares analysis? Explain properly.

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The difference of elevation between B and C was taken by a survey party using different trials and paths. Compute the probable elevation of point C if it is above point B. Elevation of point B is 825 m. a. 823.5211m b. 824.9612m c. 826.2413m d. 825.8365 m