Determine the mean horizontal circle readings for the identified target points from your allocated instrument position.

As part of the pre-design information required for the re-development of the K- block within the University of South Wales’s Treforest campus, some surveying activities are needed to be implemented around the development site. The survey activities involve a closed levelling survey, where reduced levels are required for various observation/stake points as indicated below and shown in Appendix 1.
The reduced level for the Temporary benchmark was identified as 69.650m.

⦁ Using the rise and fall method sheet in Appendix 2, conduct a levelling survey of the identified observation/stake points around the development site .
⦁ Record the data obtained from the various line of sights in your booking sheet.
⦁ Evaluate the Reduced Levels on the booking sheet and carry out the mathematical check.
⦁ Verify the accuracy of the levelling survey and comment accordingly.
⦁ Produce a sketch of the vertical section along the line of levelling survey and explain the process/procedures you have taken to accurately carry out the levelling survey .

Part 2: Horizontal control

Using a Total station, the horizontal angular measurement of some identified target points are required to be taken from specific station positions within the K-block site .
⦁ Record the horizontal circle readings for the target points in the booking sheet shown in Appendix 3.
⦁ Determine the mean horizontal circle readings for the identified target points from your allocated instrument position.
⦁ Evaluate the mean horizontal angles for the target points.
⦁ Describe with annotated sketches the process you obtained the horizontal angular measurements on-site using a Total Station from your allocated instrument position.