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Earthworks on Northern side of motorway (31) Earthworks between A and B (Level) - Embankment (i) Draw parallel lines at 10mm intervals (ii) Identify intersections with contours and draw curve Earthworks between B and C (Level, Vertical Edge) - Cutting (iii) Draw parallel lines at 7.5mm intervals (iv) Identify intersections with contours and draw curve Earthworks between B and C (Level, Horizontal Edge) - Cutting (v) Draw parallel lines at 7.5mm intervals (vi) Draw curve Earthworks between B and C (Level, Sloping Edge) - Cutting (vii) Draw parallel lines at 7.5mm intervals (viii) Draw curve Earthworks between C and D - Cutting (ix) Draw required 7.5mm arc at C and draw tangent (x) Draw parallel lines at 10mm intervals (xi) Identify endpoints and draw curve (b) Strike and Dip of stratum and Borehole from R (13) (xii) Establish points on top surface in elevation and draw required triangle - Leaving Cert DCG - Question C-1 - 2018

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Question C-1

Earthworks-on-Northern-side-of-motorway-(31)--Earthworks-between-A-and-B-(Level)---Embankment-(i)-Draw-parallel-lines-at-10mm-intervals-(ii)-Identify-intersections-with-contours-and-draw-curve--Earthworks-between-B-and-C-(Level,-Vertical-Edge)---Cutting-(iii)-Draw-parallel-lines-at-7.5mm-intervals-(iv)-Identify-intersections-with-contours-and-draw-curve--Earthworks-between-B-and-C-(Level,-Horizontal-Edge)---Cutting-(v)-Draw-parallel-lines-at-7.5mm-intervals-(vi)-Draw-curve--Earthworks-between-B-and-C-(Level,-Sloping-Edge)---Cutting-(vii)-Draw-parallel-lines-at-7.5mm-intervals-(viii)-Draw-curve--Earthworks-between-C-and-D---Cutting-(ix)-Draw-required-7.5mm-arc-at-C-and-draw-tangent-(x)-Draw-parallel-lines-at-10mm-intervals-(xi)-Identify-endpoints-and-draw-curve--(b)-Strike-and-Dip-of-stratum-and-Borehole-from-R-(13)-(xii)-Establish-points-on-top-surface-in-elevation-and-draw-required-triangle-Leaving Cert DCG-Question C-1-2018.png

Earthworks on Northern side of motorway (31) Earthworks between A and B (Level) - Embankment (i) Draw parallel lines at 10mm intervals (ii) Identify intersections w... show full transcript

Worked Solution & Example Answer:Earthworks on Northern side of motorway (31) Earthworks between A and B (Level) - Embankment (i) Draw parallel lines at 10mm intervals (ii) Identify intersections with contours and draw curve Earthworks between B and C (Level, Vertical Edge) - Cutting (iii) Draw parallel lines at 7.5mm intervals (iv) Identify intersections with contours and draw curve Earthworks between B and C (Level, Horizontal Edge) - Cutting (v) Draw parallel lines at 7.5mm intervals (vi) Draw curve Earthworks between B and C (Level, Sloping Edge) - Cutting (vii) Draw parallel lines at 7.5mm intervals (viii) Draw curve Earthworks between C and D - Cutting (ix) Draw required 7.5mm arc at C and draw tangent (x) Draw parallel lines at 10mm intervals (xi) Identify endpoints and draw curve (b) Strike and Dip of stratum and Borehole from R (13) (xii) Establish points on top surface in elevation and draw required triangle - Leaving Cert DCG - Question C-1 - 2018

Step 1

Earthworks between A and B (Level) - Embankment

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Answer

  1. Draw parallel lines at 10mm intervals to create an embankment representation between points A and B.
  2. Identify intersections with contours and plot a curve that follows the contours of the terrain.

Step 2

Earthworks between B and C (Level, Vertical Edge) - Cutting

99%

104 rated

Answer

  1. Draw parallel lines at 7.5mm intervals to depict the vertical cutting edge between B and C.
  2. Identify points where these lines intersect with the contours and create a corresponding curve.

Step 3

Earthworks between B and C (Level, Horizontal Edge) - Cutting

96%

101 rated

Answer

  1. Similar to the previous step, draw parallel lines at 7.5mm intervals to illustrate the horizontal cutting edge between points B and C.
  2. Follow up by drawing a curve that aligns with the intersections derived from the contours.

Step 4

Earthworks between B and C (Level, Sloping Edge) - Cutting

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120 rated

Answer

  1. Again, draw parallel lines at 7.5mm intervals representing the sloping edge between B and C.
  2. Complete this section by drawing a curve that connects the endpoints of these lines.

Step 5

Earthworks between C and D - Cutting

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117 rated

Answer

  1. Draw a required arc of 7.5mm at point C and create a tangent line extending from the arc.
  2. Continue by drawing parallel lines at 10mm intervals to indicate the cutting volume.
  3. Finally, identify endpoints of your lines and sketch a curve that integrates these points.

Step 6

Strike and Dip of stratum and Borehole from R

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121 rated

Answer

  1. Begin by establishing relevant points on the top surface and drawing a required triangle to depict the geological layout.
  2. Then, draw the triangle in plan view and establish the strike line, S.
  3. Determine and convey the required dip for the strata.
  4. Finally, assess and indicate the shortest length for the borehole that originates from point R.

Step 7

Line of intersection between stratum and widened toll plaza

96%

114 rated

Answer

  1. Draw the line of intersection that illustrates how the stratum connects with the expanded toll plaza design, ensuring to include all necessary construction details in the diagram.

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