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The image on the right shows a 'Magnum' ice cream and a wrapper - Leaving Cert DCG - Question C-3 - 2021
Question C-3
The image on the right shows a 'Magnum' ice cream and a wrapper. The projections of a similar wrapper are shown in Fig. C-3 below. (a) Draw the given elevation an... show full transcript
Worked Solution & Example Answer:The image on the right shows a 'Magnum' ice cream and a wrapper - Leaving Cert DCG - Question C-3 - 2021
Step 1
Draw the given elevation and plan of the wrapper.
Answer
To draw the elevation of the wrapper, start by sketching its outline based on the dimensions provided. The height should be 50 units and the width at the base should be 16 units. At the top, draw a semicircle with a radius of 20 units, aligned with the width of the elevation. Label the height points, ensuring the contact points are clearly indicated with annotations showing where the wrapper meets the cylindrical ice cream.
For the plan view, represent the top outline of the wrapper, ensuring to include the circular surface with accurate dimensions of the wrapper, again clearly marking the points of contact.
Step 2
Project an end view of the wrapper.
Answer
In the end view, sketch the wrapper as seen from the open side, which would show the rounded shape at the top occupying the full width while the rectangular section below measures 16 units across. Ensure to include dimensions for clarity, marking the height of the wrapper from the bottom to the top of the circular end.
Step 3
Draw a one-piece surface development of the wrapper.
Answer
To develop the surface of the wrapper into a flat shape, start with the base rectangle, which is 20 units in height and 16 units in width. From there, add tabs for the curved sections of the wrapper. The curved area should be cut into segments at regular intervals to maintain symmetry and shape continuity. Each curved surface section should include the radius (R = 20 units) for accurate development. Present the entire development layout clearly showing the seams and folds for assembly, making sure to annotate dimensions thoughtfully.