Correct Answer:
Option D - Triangulationsurvey- In triangulation survey, the system consists of a number of interconnected triangles in which the length of only one line is called the base line & angle of the triangle are measured very accurately.
Purpose:–
• To establish accurate control points for plane & geodetic survey of large areas.
• To establish accurate ground control points for photogrammetry survey of large area.
• For various engineering projects it is required to build up accurate horizontal control.
• Location of center lines and other important points for any engineering projects such as tunnels and bridges
D. Triangulationsurvey- In triangulation survey, the system consists of a number of interconnected triangles in which the length of only one line is called the base line & angle of the triangle are measured very accurately.
Purpose:–
• To establish accurate control points for plane & geodetic survey of large areas.
• To establish accurate ground control points for photogrammetry survey of large area.
• For various engineering projects it is required to build up accurate horizontal control.
• Location of center lines and other important points for any engineering projects such as tunnels and bridges