Profiles and Travellers in Earthworks

Finchley College Courses: www.finchleyco...
This video showcases an assessment on setting out profiles as part of Finchley College's Level 3 Diploma in Engineering Surveying
Setting the height of a traveller between two profiles involves calculating the vertical difference in elevation between the two points. Here's a step-by-step guide on how to set the height of a traveller:
Measure Heights at Each Profile:
Use surveying tools such as levels to measure the elevation or height at each profile point. This could include the top of manholes, structures, or any other designated points on the site.
Calculate the Height Difference:
Determine the difference in height (elevation) between the two profiles. This is the vertical distance that the traveller needs to account for.
The height difference is a critical parameter in earthworks, as it guides decisions on how much material needs to be added or removed to achieve the desired grading.
Consider Design and Safety Factors:
Incorporate any design specifications or safety factors into the calculation. This may include allowances for settling, compaction, and other considerations that impact the final elevation of the site.
Calculate the Traveller Height:
Add or subtract the height difference to the reference point's elevation (e.g., invert level). The result is the calculated height of the traveller.
If the ground needs to be lowered, the traveller height would be subtracted from the reference point's elevation. Conversely, if the ground needs to be raised, the traveller height would be added.
Mark or Stake the Traveller Height:
Use stakes or markers to indicate the height of the traveller at the designated points on the site.
This ensures that during the earthworks process, construction teams can easily reference and follow the planned elevations.
Verify and Adjust as Needed:
Regularly verify the elevations during the construction process to ensure that the actual elevations match the planned profiles.
Adjust the traveller heights as needed based on real-time measurements and any unforeseen site conditions.
Setting the height of a traveller accurately is essential for achieving the desired grading and ensuring that the final site meets engineering specifications. Regular checks and adjustments during the construction process help maintain precision and alignment with the project goals.

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