A surveyor set his instrument up at point Ain order to observe point B. The instrument was inclined at an angle of +30°23' from the horizontal in order to observe point B. From his observations, the diference between the Upper reading and the Lower reading on the rod at point B was 2.20m while the Middle reading on the rod was 1.95m. At point A, his instrument was measured to be at a height of 1.62m. The telescope used was advertised as follows: Telescope length = 20 cm • Focal length = 20 cm Stadia interval factor = 95.50 What is the SLOPE DISTANCE between the center of the instrument to the middle reading at the rod? (answer in m) WITH FIGURE
A surveyor set his instrument up at point Ain order to observe point B. The instrument was inclined at an angle of +30°23' from the horizontal in order to observe point B. From his observations, the diference between the Upper reading and the Lower reading on the rod at point B was 2.20m while the Middle reading on the rod was 1.95m. At point A, his instrument was measured to be at a height of 1.62m. The telescope used was advertised as follows: Telescope length = 20 cm • Focal length = 20 cm Stadia interval factor = 95.50 What is the SLOPE DISTANCE between the center of the instrument to the middle reading at the rod? (answer in m) WITH FIGURE
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Show complete formulas and solutions. Round off to 3 decimal places for lengths.
Angles must be in degrees, minutes, and seconds (° ‘ “) and seconds should not include decimals anymore (ex. 1°1’36.52” should be 1°1’37”).
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