4 Traverse - CE 111 Traverse and Traverse Computations...

Info icon This preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
CE 111 Traverse and Traverse Computations
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Traverse Traverse Series of successive straight lines that are connected together Traversing The process of measuring the lengths and directions of the lines Purpose: To locate objects or boundaries To obtain control information
Image of page 2
Traversing This involves the measurement of a series of distances & directions (angle, bearing, azimuth) One of the most common measurement techniques in Geomatics
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Types of Traverses Open Checks are not available Closed Begins and ends at the same point (loop traverse) OR..starts at a known point and ends at another endpoint Checks are available
Image of page 4
Types of Open Traverses I. Loop Traverse (closes on starting point) II. Link Traverse [Distance and angles Measured]
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Measuring Traverse Angles Interior/Exterior angles Angles to the right (left) Deflection angles
Image of page 6
Traversing Angle Computations Rules for closed with n angles: (internal angles) = (n 2) 180 or (external angles) = (n + 2) 180 For a closed link traverse, the check is given by A 1 + (angles) A 2 = (n 1) 180 Where: n is the number of angles measured A 1 is the initial or starting azimuth A 2 is the closing or final azimuth
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Balancing Angles: Using this example: (n=5) (5-2)180° = 540° Observed values total to 540° 0’11” Error: 11” Adjustment: - 11” Traversing Angle Computations
Image of page 8
Traversing Angle Computations Balancing the Angles: The misclosure is distributed amongst the angles. (i) arbitrary adjustment if misclosure is small, then it may be inserted into any angle arbitrarily (usually one that may be suspect) (ii) average adjustment misclosure is divided by number of angles and correction inserted into all of the angles. (most common technique) (iii) weighted adjustment weights are proportional to confidence in measurement
Image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Traversing Angle Computations Once the angles have been balanced Use these angles to compute the azimuths of the lines in the traverse Start with from the azimuth of the original fixed control line Use the internal or clockwise measured angles to compute the forward azimuths of the new lines.
Image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern