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The 3D graphic on the right shows a kit bag with a sports logo - Leaving Cert DCG - Question C-3 - 2015
Question C-3
The 3D graphic on the right shows a kit bag with a sports logo. The projections of the bag are shown in Fig. C-3 below. (a) Draw the given views. (b) Project an en... show full transcript
Worked Solution & Example Answer:The 3D graphic on the right shows a kit bag with a sports logo - Leaving Cert DCG - Question C-3 - 2015
Step 1
Draw the given views.
Answer
To draw the given views, we first outline the elevation and plan projections. Begin by sketching the straight edges of the elevation as shown in Fig. C-3. Ensure to highlight the curve by accurately locating the center of the arc in the elevation. Afterward, complete the elevation by connecting the arcs and straight lines.
Next, for the plan view, draw the top view of the bag by projecting the elevations onto a horizontal plane. This involves accurately marking the dimensions; the width should be 80 mm while the length is 100 mm.
Step 2
Project an end view of the bag.
Answer
To project the end view of the bag, we will focus on depicting the side that shows the curvature and straight edges. Begin with the projections from the elevation, ensuring to represent the correct dimensions, especially the width derived from the plan. The end elevation will consist of a semi-circular arc on top, connecting to the straight edges below, highlighting the overall profile of the bag.
Step 3
Draw a one-piece surface development of the bag.
Answer
For the one-piece surface development, we will lay out the surfaces that make up the bag. Start by outlining the bottom surface, measuring 80 mm in width and capturing the curved dimensions appropriately.
Develop the vertical surfaces by representing the sides that extend from the bottom surface. Incorporate inclined surfaces where necessary to indicate any slopes or sections that angle towards the curvature.
Next, split the curved surface into sections, ensuring to detail the front and back surfaces accurately. This will require precise division for an appropriate layout. Finally, include the presentation aspect by enhancing the clarity and neatness of the surface development.