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The 3D graphic on the right shows a lotion bottle - Leaving Cert DCG - Question B-1 - 2014
Question B-1
The 3D graphic on the right shows a lotion bottle. Fig. B-1 below shows an incomplete isometric projection of the bottle. The elevation and plan of the bottle are a... show full transcript
Worked Solution & Example Answer:The 3D graphic on the right shows a lotion bottle - Leaving Cert DCG - Question B-1 - 2014
Step 1
Draw the given equilateral triangle abe and the axonometric axes X, Y, and Z.
Answer
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Start by plotting three points, A, B, and C, which will form the vertices of the equilateral triangle. Each angle of the triangle should be 60 degrees.
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Connect points A, B, and C to form the triangle abe.
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Establish the axonometric axes X, Y, and Z at a 30-degree angle to the horizontal plane, ensuring they are in the correct proportion according to the isometric drawing conventions.
Step 2
Draw the elevation and plan positioned as shown.
Answer
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Define the elevation layout by creating a rectangle that represents the front view of the bottle. Ensure its height corresponds with the design.
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Incorporate the semicircular lid and position it accurately in relation to the main body of the bottle.
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Draw the plan view. This will be a top view of the bottle and must include the dimensions properly scaled.
Step 3
Draw the axonometric projection of the rectangular prism representing the body of the bottle.
Answer
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Begin with the base of the rectangular prism. Draw it in the appropriate position based on the plan view.
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Extend vertical lines from each corner of the base upwards to establish the height of the bottle.
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Connect the top vertices with horizontal lines to form the top face of the bottle.
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Ensure all lines are drawn at the correct angles to adhere to axonometric projection standards.
Step 4
Draw the axonometric projection of the semi-circular lid.
Answer
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Sketch the outline of the semi-circular lid at the top of the bottle in the axonometric view.
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Use a radius of R20 to accurately represent the curvature.
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Draw the front surface of the lid, ensuring the perspective is in line with other components of the drawing.
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Finally, present the entire sketch with appropriate shading to indicate depth and form.