This Contour Map is part of Section C and should only be used for answering the Geometric Geometry Option (Question C-1) - Leaving Cert DCG - Question C-1 - 2012

Using vertical projections from the contour lines to line AB, map the intersections at each contour line. This will allow for accurate indication of changes in elevation as represented in the profile.

Connect the measured heights and intersections with a smooth line to represent the profile of the landform accurately. Ensure that the outline reflects the natural terrain and angles from the measured points.

Review the contour lines for the low point in the section, which represents the maximum water depth. This is typically at a location where the contour lines are closest together, suggesting deeper elevation.

From the identified maximum water depth point, draw a horizontal line across the profile to represent this depth visually.

Using the elevations obtained, draw parallel lines across the profile at intervals of 5m, adjusting according to the contour slope to reflect the true changes in elevation.

From the established contour lines and earthworks calculations, pinpoint specific locations that correspond to the earthworks curve ensuring they depict transition smoothly showing cuts and fills.

Using the identified points, create a smooth curve that represents the earthworks necessary to achieve the roadway profile, ensuring it accommodates all elevations possible.

Ensure that all drawn elements are clearly labeled and organized; utilize appropriate symbols, colors, and a key for contour lines and earthworks. The overall presentation should be neat and professional, making the data easily interpretable.