This Contour Map is part of Section C and should only be used for the answering of the Geologic Geometry Option (Question C-1) - Leaving Cert DCG - Question C-1 - 2013

Locate the intersections of the lines drawn in the previous step with the contour lines present. Trace these intersections to depict the resulting curve accurately, reflecting the landscape's incline.

For the embankment section between points A and B, draw parallel lines spaced 7.5mm apart. This spacing should account for the embankment's gradual structure.

Identify where the new set of lines intersects the contour lines. Draw the corresponding curve to illustrate the embankment's shape.

For the cutting section between B and C, illustrate the area by drawing the required boundaries on the map, taking care to respect the terrain's natural features.

Again, draw parallel lines every 5mm across the cutting area between B and C to provide a detailed representation of the excavation process.

As with previous sections, find where these lines intersect with the contour lines, and sketch the curve to represent the topography.

On line DE, measure and draw height intervals in 5mm increments. This will create a profile of the height variation along DE.

Project lines from intersections found between line DE and the contour lines. These projections will help determine how the profile adjusts to the terrain.

Using the height measurements and projections, draw the outline of the profile on the map to display elevation changes clearly.

Finalize the profile by incorporating an edge view of the cut surfaces to provide a comprehensive understanding of the changes in elevation.

Construct triangle PQR on the contour map according to the specified plan and elevation views. Ensure precise alignment to maintain scale.

From the triangle PQR, establish the strike line, which will indicate the orientation of geological features.

Construct perpendicular lines X and Y to the identified strike line. These lines assist in further geological calculations.

Calculate the dip based on the angle formed between the horizontal plane and the geological surface indicated by the constructed lines.