The 3D graphic below shows three candles which are in contact - Leaving Cert DCG - Question A-4 - 2011
Question A-4
The 3D graphic below shows three candles which are in contact. The arrangement includes a cone and two cylinders. All three solids rest on the horizontal plane.
The... show full transcript
Worked Solution & Example Answer:The 3D graphic below shows three candles which are in contact - Leaving Cert DCG - Question A-4 - 2011
Step 1
Projection of centre from plan
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Answer
Start by identifying the position of the center of Cylinder B from the plan view, which is symbolized by point 'A'.
Project vertical lines from point 'A' upwards in order to reach the elevation view.
Step 2
Establish the centre point in elevation
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On the elevation view, locate the projected point from the plan view which represents the center of the base of Cylinder B.
Mark this point accurately to maintain proportion relative to the given heights.
Step 3
Draw cylinder B
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Using the established center point from the previous step, draw the outline of Cylinder B in elevation.
Ensure to depict the cylinder’s height and curved surface appropriately.
Represent the cylindrical shape clearly with smooth arcs.
Step 4
Projection of centre from elevation
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Answer
Look at the elevation of Cylinder C from the elevation view to project the center upwards.
From the center of Cylinder C, project a horizontal line to establish its diameter.
Step 5
Locate centre point in plan
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From the horizontal projection of the center of Cylinder C, drop a vertical line downward to locate its center point in the plan view.
Mark this center point with the appropriate notation.
Step 6
Draw cylinder C
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Using the center point located in the previous step, draw the circular outline of Cylinder C in the plan view.
Indicate the dimensions clearly to represent the cylinder's diameter and ensure that it aligns with the elevation view.
Step 7
Presentation
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Ensure the drawings are neat and accurately labeled, including any necessary annotations.
Utilize appropriate line weights to differentiate between visible and hidden features.
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