GATE Civil - GATE 2017-2018 Questions and Answers

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Discussion :: GATE Civil

A theodolite is set up at station A and a 3 m long staff is held vertically at station B. The depression angle reading at 2.5 m marking on the staff is 6°10´. The horizontal distance between A and B is 2200 m. Height of instrument at station A is 1.1 m and R.L. of A is 880.88 m.Apply the curvature and refraction correction, and determine the R.L. of B (in m). __________

641.9 to 642.3

534.6 to 535.2

127.4 to 128.1

212.0 to 212.5

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