The 3D graphic below shows a post box - Leaving Cert DCG - Question A-2 - 2011
Question A-2
The 3D graphic below shows a post box. The plan and incomplete elevation of the box are shown on the right.
(a) Complete the elevation.
(b) Draw an auxiliary view ... show full transcript
Worked Solution & Example Answer:The 3D graphic below shows a post box - Leaving Cert DCG - Question A-2 - 2011
Step 1
Completion of elevation (i) Perp. projections to elevation
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Begin by drawing the perpendicular projections of the key points from the plan onto the elevation. Ensure that points A and B are projected correctly to reflect their positions in the 3D space.
Step 2
Completion of elevation (ii) Identify points in elevation
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Answer
Label the points as identified in the plan. For instance, mark point A and point B clearly, ensuring that their corresponding heights are reflected properly in the elevation view.
Step 3
Completion of elevation (iii) Complete elevation
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Answer
Using the projections and identified points, complete the elevation view by drawing the outlines of the post box. Be sure to maintain accuracy regarding angles and dimensions as shown in the plan.
Step 4
True angle (iv) Projections from plan
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From the 2D plan, project the lines representing the edges of surfaces A and B to illustrate their spatial orientation relative to one another.
Step 5
True angle (v) Heights from elevation
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Utilize the heights indicated on the elevation to accurately measure and mark the intersection points between the projections drawn in the previous step.
Step 6
True angle (vi) Complete the auxiliary elevation
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Answer
Based on the projections and heights determined, finalize the auxiliary elevation by incorporating the true angle formed between surfaces A and B. Ensure the visual clarity of this intersection.
Step 7
True angle (vii) Presentation
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Answer
Present the final drawings clearly, using neat lines and labels. Make sure the elevations and angles are visibly accurate and add a header or title for clarity.
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