The following schedules are for Alex’s in-class students:

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These self-assessment problems accompany the mini course On Datums and Network Design.

In the network shown below:

a) If you were to remove only the distance measurements from the adjustment, would you have a datum problem? If so, what is / are the defect(s)?

b) If you were to remove only the known coordinates of point 1, would you have a datum problem? If so, what is / are the defect(s)?

c) If you were to remove both known points (1 and 2), would you have a datum problem? If so, what is / are the defect(s)?

Which of following is more likely to have been solved by internal constraints and (vs. external constraints)? Why?

a)

b)

If the following correction vectors correspond to different adjustment solutions of a two-station height network, which is a solution by inner constraints and why?

a)

a)

The following schedules are for Alex’s in-class students: