Types of Bearings | Guide to Surveying
It is an angle made by the survey line with reference to some fixed meridian.
Bearings are classified into three types:
- True bearing
- Magnetic bearing
- Arbitrary Bearing
The angle made by a survey line with reference to the meridian is known as true bearing. It always remains constant.
The angle made by a survey line with respect to magnetic meridian is known as magnetic bearing. It changes from place to place.
The angle made by the survey line with reference to arbitrary meridian is known as Arbitrary Bearing.
Designation of Bearings
- Whole circle bearing
- Reduced Bearing (RB) or quadrantal bearing (QB)
- Fore Bearing (FB) or forward bearing (FB)
- Back bearing or Backward bearing (BB)
- Calculated bearing
We will discuss “Designation of Bearings” in detail in our successive articles.