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Q: Which of the following statement for the included angle method is/are true? Statement 1 : Included angles can be measured either clockwise or counter-clockwise. Statement 2: The measured clockwise angles are interior angles if the direction of progress around the survey is counter-clockwise.
  • A. Only Statement 2 is true.
  • B. Both Statement 1 and 2 are true.
  • C. Neither Statement 1 nor Statement 2 is true.
  • D. Only Statement 1 is true.
Correct Answer: Option B - Included angle method–An included angle at a station is either of the two angles formed by two survey lines meeting there and these angles should be clockwise. • The method consists simply in measuring each angle directly from a back sight on the preceding station. • The angle measured from the back station may be interior or exterior depending upon the direction of progress. • When direction of progress in counter clockwise and so the angles measured clockwise are the interior angle. • If it is clockwise then measured clockwise angle are the exterior angle.
B. Included angle method–An included angle at a station is either of the two angles formed by two survey lines meeting there and these angles should be clockwise. • The method consists simply in measuring each angle directly from a back sight on the preceding station. • The angle measured from the back station may be interior or exterior depending upon the direction of progress. • When direction of progress in counter clockwise and so the angles measured clockwise are the interior angle. • If it is clockwise then measured clockwise angle are the exterior angle.

Explanations:

Included angle method–An included angle at a station is either of the two angles formed by two survey lines meeting there and these angles should be clockwise. • The method consists simply in measuring each angle directly from a back sight on the preceding station. • The angle measured from the back station may be interior or exterior depending upon the direction of progress. • When direction of progress in counter clockwise and so the angles measured clockwise are the interior angle. • If it is clockwise then measured clockwise angle are the exterior angle.