Traversing 2

Question 1

What are the traverse computational steps? (5)

Answer 1

1) Compute bearing of all traverse lines (legs)
2) Compute the horizontal distances of all traverse lines
3) Compute differences in Eastings and Northings around/along the traverse.
4) Compute coordinates of the new traverse stations
5) Compute misclosures and analyse.

Question 2

How do you calculate total positional misclosure?

Answer 2

Sqr((Easing misclosure)^2+(Northing misclosure)^2))

Question 3

How do you calculate proportional misclosure?

Answer 3

positional misclosure/total length of traverse.

Question 4

What are the 3 types of traverse accuracies? (3)

Answer 4

1) Precise
2) General
3) Low accuracy

Question 5

When are the 3 types of accuracies acceptable in relation to their proportional misclosure?

Answer 5

Precise: <1:50,000
General: 1:5,000 to 1:50,000
Low accuracy: 1:500 to 1:5,000

Question 6

What is the purpose for the 3 types of accuracies?

Answer 6

Precise: Primary control
General: General Engineering
Low accuracy: Earthworks, small scale mapping

Question 7

What is the distance equipment for the 3 types of accuracies?

Answer 7

Precise: Height end total station, <1mm
General: Total station
Low accuracy: Total station or tapes

Question 8

What re the angles measure to get these types of accuracies?

Answer 8

Precise: 0.1” high end total station
General: total station 1-10”
Low accuracy: 20” low spec total station