The image on the right shows a BMX freestyler at the 2020 Olympic Games - Leaving Cert DCG - Question B-2 - 2022
Question B-2
The image on the right shows a BMX freestyler at the 2020 Olympic Games. The BMX course consisted of a number of ramp structures.
Fig. B-2 below shows the elevation... show full transcript
Worked Solution & Example Answer:The image on the right shows a BMX freestyler at the 2020 Olympic Games - Leaving Cert DCG - Question B-2 - 2022
Step 1
Draw the given elevation
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To draw the given elevation, start by sketching the outline of the ramp as provided in the drawing. Ensure that the dimensions are followed meticulously, maintaining a scale of 1:1. Pay special attention to areas such as the ramp slope and curves represented by radius R40, ensuring the correct projection of height.
Step 2
Complete the elevation
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After outlining the initial elevation, complete the structure by adding details such as the surface lines and texture of the ramp. Include any hidden lines that may represent the internal features of the ramp, ensuring clarity and adherence to the original schematic.
Step 3
Draw the outline plan as given
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The outline plan should be drawn by maintaining the same dimensions used for the elevation. Include the precise layout of the ramp, ensuring to incorporate the sections extending from points defined at the height indicated in the elevation.
Step 4
Complete the plan as given
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To finalize the plan, add all necessary dimension lines and projections from the elevation. Clearly indicate the intersection points, and ensure every line is clearly labeled to avoid confusion during interpretation.
Step 5
Projection into ramp
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Project the given elevation downwards onto the ramp layout as indicated. Use light construction lines to illustrate how the elevation translates into the plan view.
Step 6
Locate points in plan
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Identify and mark all critical points in the plan that correspond to the elevation projections. This includes spots where the surfaces meet and the ramp slopes change.
Step 7
Complete the plan
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Ensure that all elevation points have been accurately represented in the plan. Double-check the alignment and spacing of the elements to confirm consistency.
Step 8
Projection from elevation
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Begin the projection from the elevation by dropping vertical lines to the plan view. This will help in determining the accurate placements of points and edges.
Step 9
Projection from end view
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Utilize the end view to project any horizontal lines that help in visualizing the ramp's depth and angles. This enhances the understanding of how the ramp occupies space.
Step 10
Locate points in plan again
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Affirm the points previously marked by confirming they align accurately with the newly drawn elevation projections.
Step 11
Complete the plan again
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Final touch-ups on the plan should involve revisiting all dimensions and projections to ensure everything is completed accurately as per the original drawing.
Step 12
Transfer of widths from plan
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In this step, transfer the width measurements indicated in the plan to the end view. Pay careful attention to spacing and scale.
Step 13
Projection of heights from elevation
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From the elevation, project the height dimensions onto the end view. Each point’s height should correspond with its designation in the elevation, ensuring a three-dimensional understanding.
Step 14
End view of main structure (incl. hidden detail)
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Construct the end view showcasing both visible and hidden lines that depict the ramp's structure. Make meticulous annotations to indicate layers or internal features.
Step 15
End view of ramp
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Sketch the end view focusing on the ramp's profile. This involves detailed representation of the incline and the breadth of the ramp at different points.
Step 16
Presentation
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The final drawings should be presented neatly, ensuring clarity in all lines and adherence to the specified formats. Label all components clearly to enhance understanding.
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