1. Point A on a triangulation survey has the following angle measurements (degrees-minutes- seconds): 47-10-33; 62-31-43; 250-17-29. The error in the measurement is equal to: a) -15" c) +5" 2. Point A on a triangulation survey has the following angle measurements (degrees-minutes- seconds): 47-10-33; 62-31-43; 250-17-29. The adjusted value of the smallest angle is equal to: a) 47-10-18 c) 47-10-38 3. Sides of a triangle ABC taken from a trilateration data are as follows: AB = 363.626m; BC = 418.061m; and AC = 479.621m. If AB is due east, determine the bearing of BC. b) +15" d) -5" b) 47-10-48 d) 47-10-28

1. Point A on a triangulation survey has the following angle measurements (degrees-minutes- seconds): 47-10-33; 62-31-43; 250-17-29. The error in the measurement is equal to: a) -15" c) +5" 2. Point A on a triangulation survey has the following angle measurements (degrees-minutes- seconds): 47-10-33; 62-31-43; 250-17-29. The adjusted value of the smallest angle is equal to: a) 47-10-18 c) 47-10-38 3. Sides of a triangle ABC taken from a trilateration data are as follows: AB = 363.626m; BC = 418.061m; and AC = 479.621m. If AB is due east, determine the bearing of BC. b) +15" d) -5" b) 47-10-48 d) 47-10-28

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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B6
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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.) What is the estimated error in the computed benchmark elevation if the instrument has a DIN 18723 stated accuracy of +-3"?
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