This Contour map is part of Science C, and illustrates the Geologic features of the area of Dublin, Ireland - Leaving Cert DCG - Question C-1 - 2015

Identify where the drawn parallel lines intersect with the contour lines. These intersection points will help determine the shape and elevation changes along the earthworks. Once identified, plot these points accurately, focusing on maintaining the contour profile.

Similar to the embankment, draw parallel lines at 7.5 mm intervals. However, focus on ensuring the lines follow the terrain's gradient as indicated by the contour lines. Each line should reflect the changes in elevation as you progress through the design area.

Determine the intersections of the parallel lines with the contour lines. Mark these intersections to create a profile of the earthworks, which will be essential for understanding the cutting depth required.

Draw parallel lines at 7.5 mm intervals along the edge GF of the car park. Be sure to align these lines according to the specific contours present in this area, representing the embankment required.

Identify where your parallel lines intersect with the contour lines, marking each point. These intersections will help visualize the required shape and elevation of the embankment for the car park.

Draw the required arc for edge FE by determining the necessary curvature based on the existing topography indicated by the contour lines. Ensure the arc smoothly connects with the embankment components.

Draw parallel lines at 7.5 mm intervals along edge FE, ensuring that they appropriately reflect the contour patterns of that area. Maintain consistency in spacing to ensure proper elevation representation.

Identify intersections between the drawn lines and the contour lines. Document these points to establish the shape and required features for the embankment.

Using the previously plotted points, determine the curves needed to establish the intersection point. This will help shape the required embankment to ensure a smooth transition along edge FE.

To draw triangle PQR in elevation, begin by marking points P, Q, and R on your diagram. Ensure that the angles and lengths reflect the actual distances as depicted in the contour map.

Create the "Strike Line" by connecting point P and the relevant line as shown in both elevations and plan view. Ensure clarity in displaying this line for ease of interpretation.

Draw the perpendicular line XY from a defined point on the "Strike Line". This will aid in illustrating the dip of the stratum.

Determine the dip by measuring the angle between the horizontal plane and the line established. This will provide insights into the geological structure being assessed.

Draw line XY parallel to pipe ST, ensuring that it corresponds with the directional flow of the pipe. This will help in visualizing the pipe layout.

Create an auxiliary view of pipe ST to illustrate its position relative to the previously drawn elements. This view should clearly represent the depth and orientation of the pipe.

Finally, determine and indicate the required depth for the pipe at point T. This involves consideration of the contour levels and any necessary elevations for proper installation.