This Contour Map is Part of Section C and should be used for answering the Geodesy Geometry Option (Question C-1) - Leaving Cert DCG - Question C-1 - 2018

Next, identify and mark the intersection points between line AB and the contour lines. From these points, project vertical lines downwards to the horizontal lines drawn previously. This will create a clear connection between the contour lines and the profile, aiding in the illustration of elevation changes.

Using the intersection points derived from the previous steps, sketch the outline of the profile. Smoothly connect the points to form a coherent profile that reflects the terrain's elevations accurately based on the provided contour data.

From point B on the profile, draw a tangent line that represents the direction the roadway will take. This requires calculating the slope at point B and extending this line outwards to ensure it corresponds accurately with the profile.

Next, draw the vertical pylon based on the tangent drawn from point B. Clearly indicate the minimum height of the pylon according to the project specifications. This is an essential aspect of roadway design, ensuring that any vertical structures will comply with required clearances.

Mark out parallel lines at 5m intervals along the profile to denote the cutting sections. These lines should be evenly spaced and set parallel to ensure an accurate representation of excavation requirements.

Once the parallel lines are drawn, identify and label key points along the cutting curves. This involves determining where the cut intersects with the lines drawn previously and marking those points clearly on the profile.

Using the identified points from the previous step, draw smooth cutting curves to connect them. These curves should represent the natural shape of the terrain post-excavation, illustrating how the land will be modified.

Following the cutting curves, draw parallel lines at 10m intervals for the embankment sections. This is critical for understanding the structure of the roadway as it will ascend or descend.

As with the cuttings, identify points along the embankment curve where the lines intersect. Clearly label these points as they are essential for the further detailing of the embankment's shape.

Finally, draw the embankment curve by connecting the identified points smoothly. This curve will depict the rise of the roadway and should accurately reflect the designed slope.

Ensure that all drawings are neat, clearly labeled, and include a legend if necessary. Present the profile, cutting, and embankment curves in a manner that is easy to read and interpret, adhering to any specific presentation guidelines provided in the marking scheme.