The 3D graphic on the right shows books on a shelf which rest against a Bookend - Leaving Cert DCG - Question C-5 - 2016

Incorporate a section view A-A that clearly illustrates the internal structure of the Bookend. Use the dimensions provided to ensure accuracy, particularly for the octagonal component of the Centre Support. The section view should show the outline and any relevant holes or pins as indicated in the drawings.

Draw the outline of the Base with precise dimensions: 180 mm by 145 mm. Attention should be paid to making the edges sharp and ensuring the rectangle's proportions are accurately depicted.

Indicate the position for the holes in the Base, ensuring they are drawn to the dimensions specified, including the hole for the 40 mm pin. The location should line up with the Centre Support’s corresponding positions.

Draw the outline of the Vertical Side using the dimensions provided. Make it 170 mm high and 40 mm wide, with a smooth finish on all edges.

Mark the holes in the Vertical Side for joining with the Centre Support and the Base. Position these holes accurately to align with the respective parts, ensuring the dimensions match those given.

Create the outline of the Centre Support. The dimensions should represent a regular octagon with 50 mm sides—properly proportioned to fit into the assembly.

Incorporate the holes in the Centre Support, ensuring they are correctly positioned for the 25 mm pins as indicated.

Clearly draw the octagonal feature within the Centre Support. Ensure that all sides are of equal length (50 mm) and the shape is symmetrical and properly aligned.

Draw the 25 mm pins that will secure the components together. Ensure that the dimensions are respected, and the numbers are clearly marked on the diagram.

Represent the 40 mm pin accurately in the drawing, maintaining the reference for the hole position in the Base and ensuring the pin is correctly illustrated.

Utilize proper hatching techniques for the different parts to distinguish between materials. Ensure centrelines are drawn accurately to aid in understanding the assembly.

Check the overall presentation of the drawing, ensuring it is neat, tidy, and all components are labeled correctly with clean lines and consistent line weights.