The image below shows a drawing board and two set squares - Leaving Cert DCG - Question A-2 - 2020
Question A-2
The image below shows a drawing board and two set squares. The drawing on the right shows the plan and incomplete elevation of a similar drawing board with a 30°/60°... show full transcript
Worked Solution & Example Answer:The image below shows a drawing board and two set squares - Leaving Cert DCG - Question A-2 - 2020
Step 1
Projection of points to elevation
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Answer
Begin by identifying the points on the drawing board corresponding to the set squares. Mark the intersections of the squares accurately, taking note of their dimensions and relationships.
Step 2
Completion of elevation of drawing board
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Answer
Draw the elevation of the drawing board accurately. Ensure the height and lengths of the board are proportionate to the dimensions given, and reflect the angles formed by the set squares correctly.
Step 3
Location of 3 remaining lines of 30°/60° set square in elevation
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Indicate the three lines representing the outer boundaries of the 30°/60° set square. Ensure these lines meet the required angles and are drawn accurately on the elevation.
Step 4
Location of 3 lines of 'outer triangle' of 45° set square in elevation
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Draw the three lines that form the outer triangle of the 45° set square. These should be correctly positioned to reflect their relationships with the drawing board and other set squares.
Step 5
Location of 3 lines of 'inner triangle' of 45° set square in elevation
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Complete the drawing by including the three lines that form the inner triangle of the 45° set square. Make sure they are accurately represented to show their position relative to the outer triangle.
Step 6
Draw projections of line inclined at 45° to bottom edge of board
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From point A, draw the line inclined at 45° to the bottom edge of the board. Make this line measure 50mm in true length to satisfy the conditions of the problem.
Step 7
Draw correct required line in elevation and plan
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Finally, draw the projections of the line in both elevation and plan views. Ensure that the line is correctly placed according to the given angle and length in both views.
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