Wiley 978-1-1180-1681-7 Datasheet Page 31

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creaTing curves
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31
6. At the >>Specify bearing: prompt, enter 44.5415, and press ↵.
7. At the >>Specify distance: prompt, enter 68.64, and press .
8. Repeat steps 4 through 6 for the rest of the courses.
9. Press Esc to exit the Create Line By Bearing command.
10. The finished linework should look like Figure 1.37. There will be an error of closure of
10.0016. Typically, rounding errors can cause an error in closure. Perhaps reworking the
deed holding a different rounding value would improve your results. Consult your office
survey expert about how this would be handled in house, and refer to Chapter 2 for more
information about traverse adjustment and similar tools.
11. Save your drawing. You’ll need it for the next exercise.
Best Fit Entities
Although engineers and surveyors do their best to make their work an exact science, sometimes
tools like the Best Fit Entities are required.
Roads in many parts of the world have no defined alignment. They may have been old
carriage roads or cart paths from hundreds of years ago that evolved into automobile roads.
Surveyors and engineers are often called to help establish official alignments, vertical align-
ments, and right-of-way lines for such roads on the basis of a best fit of surveyed centerline data.
Other examples for using Best Fit Entities include property lines of agreement, road rehabili-
tation projects, and other cases where existing survey information must be approximated into
real” engineering geometry (see Figure 1.38).
Figure 1.37
The finished
linework
Figure 1.38
The Create Best
Fit Entities menu
options
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