Solution: COGO Fitting Curves

Problem (3)

Part (a) Bearing and length of line GH.

Solution procedure with partial answers:

1. Forward Computation from point A to point B: 184.070' N, 922.950' E

2. Forward Computation from point A to point G: 747.270' N, 320.228' E

3. Direction-direction intersection to determine Well head coordinates: 868.446' N, 988.396' E

4. Arc-Tangent direction intersection from point G and arc center point: Brng = N 58°07'09" E, Len = 631.37'

Part (b) Bearing and length of line CB.

Solution procedure with partial answers:

1. Use info from Part (a) 1, arc-Tangent direction intersection from point B and arc center point: Brng = N 26°47'10" E, Len = 640.43'

Part (c) Arc length CH

Solution procedure with partial answers:

1. Determine Δ using directions GH and BC: Δ = 148°40'02"

2. Compute arc length from L=(RxΔxπ)/(180°):  L = 648.68'