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The 3D graphic on the right shows a design for a sweet box - Leaving Cert DCG - Question C-3 - 2012
Question C-3
The 3D graphic on the right shows a design for a sweet box. The plan and elevation of the box are shown in Fig. C-3 below. (a) Draw the given views. (b) Draw a on... show full transcript
Worked Solution & Example Answer:The 3D graphic on the right shows a design for a sweet box - Leaving Cert DCG - Question C-3 - 2012
Step 1
Draw the given views.
Answer
To accomplish this, start with part (i):
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Draw Straight Line Edges in Elevation:
Draw the vertical lines corresponding to the heights given in the elevation view. The edges should be depicted accurately, based on the intersection of the lines from the plan. -
Establish Centre and Draw Curve:
Identify the center of the curved section at the top of the elevation, measuring 35mm radius (per guideline). Draw the arc connecting the endpoints smoothly. -
Draw Plan:
In the plan view, ensure the rectangular base is represented correctly, with dimensions 70mm wide and 40mm deep. Place the curved line at the center (of 70mm) to match with the elevation.
Step 2
Draw a one-piece surface development of the box.
Answer
For the surface development:
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Development of Base:
Start with a rectangle to represent the base of the box, measuring 70mm by 40mm. -
Development of Rectangular Sides:
Draw two rectangles of dimensions 70mm (height) by 35mm (length) for each side of the box. -
Development of Front and Back Surfaces:
The front face should reflect the curved section, including necessary parts to represent the elevation accurately. The back surface should simply match the corresponding side. -
Division of Curved Surface:
Mark the centerpoint and divide the curved area into equal segments to facilitate easier drawing. -
Development of Curved Surface:
On a separate piece, draw the arc with the desired radius (e.g., 35mm) extrapolating from the established divisions. Ensure to keep the angle consistent with the elevation for uniformity. -
Final Presentation:
Assemble all pieces for a neat presentation, ensuring that all connections are clear, and dimensions are indicated properly.