Problem 4: The following data were obtained by stadia observation: vertical angle, +12°30': upper stadia hair reading, and lower stadia hair readings, 4.500 and 3.250 m, respectively. The rod reading was taken at 3.875 m above the stadia point at A and the height of the instrument above the instrument station, B, is 1.620 m. The stadia interval factor is 995 and the instrument constant is 0.381 m. a. Compute the horizontal distance between the instrument station and the stadia point. b. What is the vertical distance from the horizontal axis of the instrument to the rod reading? c. What is the inclined distance from the center of the instrument to the rod reading? d. Compute the difference in elevation between the two ground points.
Problem 4: The following data were obtained by stadia observation: vertical angle, +12°30': upper stadia hair reading, and lower stadia hair readings, 4.500 and 3.250 m, respectively. The rod reading was taken at 3.875 m above the stadia point at A and the height of the instrument above the instrument station, B, is 1.620 m. The stadia interval factor is 995 and the instrument constant is 0.381 m.
a. Compute the horizontal distance between the instrument station and the stadia point.
b. What is the vertical distance from the horizontal axis of the instrument to the rod reading?
c. What is the inclined distance from the center of the instrument to the rod reading?
d. Compute the difference in elevation between the two ground points.
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