## 3. Examples

### a. Traverse 1

#### (1) Forward Computation

Figure F-10 |

Adjusted |
||

Line |
Lat (ft) |
Dep (ft) |

AB | -176.386 | -438.574 |

BC | +203.382 | -73.105 |

CD | +192.340 | +198.635 |

DE | -219.336 | +313.044 |

The coordinates of point A are 500.000' N, 2000.000' E. Compute the coordinates of the remaining points.

A simple way is to set up a table with North coordinates and latitudes in one column, East coordinates and departures in another.

#### (2) Inverse Computation

What are the length ad bearing of the line A to C in the diagram below?

Figure F-11 Length anf Direction Determination |

From Equations F-5 and F-6:

Substituting into Equation F-7

and Equation F-8

Because ΔN is *North* and ΔE is *West*: N86°58'47.6"W

**Line AC: 512.39' at N86°58'48"W**

### b. Traverse 2

#### (1) Forward Computation

The crossing traverse in Figure F-12 was previously adjusted with the results shown below.

Figure F-12 Crossing Traverse Forward Computation |

The coordinates of point E are 200.000' X, 1000.000' Y.

Compute the coordinates of the remaining points.

Arranging the computations in a table:

#### (2) Inverse Computation

Determine the length and azimuth of the line from point F to point H.

Remember: Y=>N, X=>E; and it's *To* minus *From*.

Because ΔY is *North* and ΔX is *West*:

**Line FH: 275.25' and azimuth of 270°40'49".**