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Q: Distance of an object from survey line is called:
  • A. Chainage
  • B. Offset
  • C. Main line distance
  • D. Base line distance
Correct Answer: Option B - An offset is the lateral distance of an object or ground feature from a survey line. By method of offsets, the point or object is located by measurement of a distance and angle (usually 90º) from a point on the chain line.
B. An offset is the lateral distance of an object or ground feature from a survey line. By method of offsets, the point or object is located by measurement of a distance and angle (usually 90º) from a point on the chain line.

Explanations:

An offset is the lateral distance of an object or ground feature from a survey line. By method of offsets, the point or object is located by measurement of a distance and angle (usually 90º) from a point on the chain line.