Some key points to remember
- Geodetic surveying: Type of surveying in which shape of earth is taken into account.
- Involves spherical trigonometry
- Cadastral surveying: Transfer of land from one person to another.
- Base bearing (BB) = FB +- 1800
- Contour: Imaginary line joining the two points of equal elevation
- Levelling: Done to determine vertical plane
- Datum: Surface to which elevation are referred.
- Station: Point at which staff is held.
- Transversing: To find distance and direction of survey line.
- Truw bearing: Magnetic bearing +- declination [ +ve sign : east and -ve sign : west]