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Coordinate Geometry (COGO)

Coordinate Geometry (COGO). Coordinate System. ,N. y. z. ,Elev. x. ,E. Points. ,N. y. 1 (x,y). Direction. Distance. 2. z. ,Elev. x. ,E. GeoPak Point Names. Alpha-Numeric (cannot be Numeric-Alpha). Must contain at least 1 numeric character at the end of the name.

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Coordinate Geometry (COGO)

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  1. Coordinate Geometry(COGO)

  2. Coordinate System ,N y z ,Elev. x ,E

  3. Points ,N y 1 (x,y) Direction Distance 2 z ,Elev. x ,E

  4. GeoPak Point Names • Alpha-Numeric (cannot be Numeric-Alpha) • Must contain at least 1 numeric character at the end of the name. • Names can be up to 9 characters in length (8 Recommended). • No Spaces!!! • Examples: • 1, 2, 3 • B1, C3, , Route36, Dog6

  5. Locate Options - Offset n2 + Offset Distance n1 Direction pa

  6. Locate Point Offset = 30 n = 115 108 Direction = N 40o 18’ 33” W Distance = 107 to 108 – 20.5’ 107 pa = 102 loc 115 trav 102 dis 107 to 108 m 20.5 n 40 18 33 w off 30

  7. Lines and Line Segments Line Direction Line Segment pa pa pb

  8. GeoPak Line Names • Can be any Alpha-Numeric characters • Names can be up to 9 characters in length. • No Spaces!!! • Examples: • 1, 2, 3road • B1, C3, Route36, Outerroad

  9. Tangent Length Deflection Angle (Delta) () Radius Radius Deflection Angle (Delta) () Curves PI PT PC Curve Length Direction Ahead (DA) Direction Back (DB) CC

  10. GeoPak Curve Names • Can be any Alpha-Numeric characters • Names can be up to 9 characters in length. • No Spaces!!! • Examples: • 1B, B1C3, B999 • Rte36-C5, 6Cats1Dog

  11. Spirals PISCS CS SC TS Circular Curve Route50-1 Direction Ahead (DA) ST Direction Back (DB) Ahead Spiral Route50-1A Back Spiral Route50-1B CS = Curve to Spiral TS = Tangent to Spiral ST = Spiral to Tangent SC = Spiral to Curve PISCS = Overall PI of the Spiral-Curve-Spiral

  12. GeoPak Spiral Names • Can be any Alpha-Numeric characters • Names can be up to 9 characters in length. (8 Recommended) • No Spaces!!! • Examples: • 1B, B1C3, B999 • Rte36, 1Dog

  13. Chains Region 2 Region 1 Station Equation 109 10+25 R 1 10+25 R 2 108 Circular Curve Rte36-1 Circular Curve Rte36-2 GeoPak Chain Names • Can be any Alpha-Numeric characters • Names can be up to 9 characters in length. • No Spaces!!! • Examples: • 1B, B1C3, Route25, SideRoad

  14. VPI 4 VPI 2 VPI 3 VPI 1 Profiles • Profiles w/o curves generally represent Existing Ground • Profiles with curves are generally used as Proposed Alignment Profiles GeoPak Profile Names • Can be any Alpha-Numeric characters • Names can be up to 9 characters in length. • No Spaces!!! • Examples: • Rte25PR, Rte55EX

  15. Coordinate Geometry(COGO)

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