The 3D graphic below shows a piece of play equipment from a science museum - Leaving Cert DCG - Question A-2 - 2014
Question A-2
The 3D graphic below shows a piece of play equipment from a science museum. It includes a truncated hexagonal prism.
The drawing on the right shows the incomplete p... show full transcript
Worked Solution & Example Answer:The 3D graphic below shows a piece of play equipment from a science museum - Leaving Cert DCG - Question A-2 - 2014
Step 1
Project required two points on top surface from auxiliary to plan
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Answer
Identify and project the two points from the auxiliary view onto the plan view of the truncated hexagonal prism. Ensure that the projections are perpendicular to the relevant edges.
Step 2
Complete outline of cut surface in plan
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Answer
Draw the complete outline of the cut surface in the plan view. This includes accurately tracing the intersection of the cut with the hexagonal prism based on the projected points.
Step 3
Complete plan incl. hidden detail
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Incorporate hidden details that are not visible in the current view. This may involve using dashed lines to indicate edges that are cut or obscured by other surfaces.
Step 4
Projection of required points to elevation
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Project the two required points from the plan view to the elevation view. Make sure to keep the projections vertical and align them with the existing structures.
Step 5
Complete outline of cut surface in elevation
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Answer
Finalise the elevation view by drawing the outline of the cut surface, ensuring that it corresponds with the projections you have just made.
Step 6
Complete elevation
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Review the entire elevation view for accuracy, confirming that all elements are properly aligned and that the dimensions reflect the original 3D shape.
Step 7
Rotation of cut surface in auxiliary view
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Answer
Rotate the cut surface in an auxiliary view for clarity, ensuring that the perspective is correct according to the position of the original hexagonal prism.
Step 8
Projection to plan (or auxiliary view)
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Make a projection of the rotated auxiliary view back to the plan view to provide a comprehensive understanding of the cut surface.
Step 9
Projecting perp. to HT in plan (or widths in auxiliary)
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Answer
Create projections perpendicular to the horizontal trace (HT) to accurately represent the dimensions of the cut surface in the plan view.
Step 10
Draw required True Shape
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Answer
Using the information gathered from the auxiliary and plan views, draw the true shape of the cut surface. This will be the final representation of the surface as viewed in its true dimensions.
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