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Home| Questions|Q 52402
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Varun Kumar
Varun Kumar
Asked: December 26, 20212021-12-26T12:01:09+05:30 2021-12-26T12:01:09+05:30In: Surveying

How to calculate bearing in surveying?

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    1. Vipin Chauhan
      Vipin Chauhan Professional
      2022-04-10T17:42:29+05:30Added an answer on April 10, 2022 at 5:42 pm

      Bearings are expressed in two ways: Whole circle bearings (WCB) Quadrantal bearings (QB) Measurement of Whole circle bearing (WCB): The angle is measured with respect to the north direction in the clockwise direction and can be valued up to 360 degrees. Measurement of Quadrantal bearing (QB):  The aRead more

      Bearings are expressed in two ways:

      1. Whole circle bearings (WCB)
      2. Quadrantal bearings (QB)

      Measurement of Whole circle bearing (WCB): The angle is measured with respect to the north direction in the clockwise direction and can be valued up to 360 degrees.

      Measurement of Quadrantal bearing (QB):  The angle is measured with respect to the north and the south direction in the clockwise and anti-clockwise directions and can be valued up to 90 degrees.

      Reduced bearing:  The whole circle bearing when expressed in Quadrantal bearing is known as a Reduced bearing.

      Conversion formula for WCB to QB

      (0 to 90) : same as WCB

      (90 to 180) : 180 – WCB

      (180 to 270) : WCB – 180

      (270 to 360) : 360 – WCB

      Fore and Back Bearing:

      If the fore bearing is less than 180,

      Back Bearing (BB) = Fore Bearing (FB) + 180

      If the fore bearing is greater than 180,

      Back Bearing (BB) = Fore Bearing (FB) – 180

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