1. A backsight of 3.055 m is taken on a point 75 m from a level station and a foresight of 1.258 m from the same station. Determine the difference in elevation between the two points, taking into account the effects of the earth's curvature and atmospheric refraction. 2. Complete the differential leveling notes below and perform the customary arithmetic check. STA BS HI FS ELEVATION BM 10 2.085 137.450 m TPI 2.015 0.982 TP2 1.864 1.428 TP3 0.579 1.527 BM II 0.423 2.423 TP4 1.446 1.807 TP5 1.778 1.725 TP6 2.05! 2.339 TP7 2.920 1.005 BM 12 3.186 2.358 TP8 2.805 0.995 TP9 0.774 1.206 BM 13 0.603
1. A backsight of 3.055 m is taken on a point 75 m from a level station and a foresight of 1.258 m from the same station. Determine the difference in elevation between the two points, taking into account the effects of the earth's curvature and atmospheric refraction. 2. Complete the differential leveling notes below and perform the customary arithmetic check. STA BS HI FS ELEVATION BM 10 2.085 137.450 m TPI 2.015 0.982 TP2 1.864 1.428 TP3 0.579 1.527 BM II 0.423 2.423 TP4 1.446 1.807 TP5 1.778 1.725 TP6 2.05! 2.339 TP7 2.920 1.005 BM 12 3.186 2.358 TP8 2.805 0.995 TP9 0.774 1.206 BM 13 0.603
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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