In the two-peg test of a dumpy level the following observations were taken: with level setup near A, observed readings are a = 1.850 m and b = 1.430 m; with level setup near B, c = 1.790 m and d = 2.210 m. A. Find the true difference of elevation. Express answer in 3 decimal places. B. How is the line of sight inclined? C. Determine the correct reading on the rod held at A with the instrument still in the same position at B for a horizontal line of sight. Express answer in 3 decimal places. D. Without instrument replacement, what should you do to adjust the line of sight?
In the two-peg test of a dumpy level the following observations were taken: with level setup near A, observed readings are a = 1.850 m and b = 1.430 m; with level setup near B, c = 1.790 m and d = 2.210 m. A. Find the true difference of elevation. Express answer in 3 decimal places. B. How is the line of sight inclined? C. Determine the correct reading on the rod held at A with the instrument still in the same position at B for a horizontal line of sight. Express answer in 3 decimal places. D. Without instrument replacement, what should you do to adjust the line of sight?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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