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Coordinate Geometry and Traverse Surveying
Faculty of Applied Engineering and Urban Planning
Civil Engineering Department
Lecture 8 - Week 5
2nd Semester 2007/2008
UP Copyrights 2007
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• Introduction to Coordinate Systems
• World and Local Coordinates
• Coordinate Geometry
• Transformation of Coordinates
• Traverse Surveying
Content
Transformation of Coordinates
Transformation of CoordinatesIn order to transform from local coordinates to the
national coordinates:
Questions
Traverse Surveying
Traverse Surveying
Traverse Surveying
Traverse Surveying
Traverse Surveying
Purpose of the surveying:
• Property surveys to establish boundaries
• Location and construction layout surveys for highways, railways and other works
• Providing ground control points for photogrammetric mapping
Questions
Types of Traverse
Types of Traverse
• Open traverse: starts at known point and ends with unknown one.
Types of Traverse
Types of Traverse
• Closed traverse: starts at known point and ends with unknown one.
Choice of Traverse
• As close as possible to the details
• Distances shall be equal between stations
• Insure durability of stations
• No sight obstructions
Traverse Computations
How to calculate the azimuth of a line
Traverse Computations
How to calculate the azimuth of a line
Traverse Computations
How to calculate the azimuth of a line
Questions
Traverse Computations
Error Correction
Traverse Computations
Error Correction
To do so, two corrections are required:
1. Angle Correction
2. Position Correction
Traverse Computations
1) Angle Correction
Traverse Computations1) Angle Correction
Questions
Traverse Computations2) Position Correction
Compass Rule (Bowditch Rule)
Questions
Traverse ComputationsAllowable Errors in Traverse Surveying
Questions
Example 7.9
Example 7.9
Example 7.9
Example 7.9
Homework: Solve the example using procedure stated in the approach
Example 7.9
Example 7.9
Questions
Example 7.10
Example 7.10
