2014 l.84-85 ms -10 gc

2014 L.84/85_MS 1/20

L.84/85

Pre-Leaving Certificate Examination, 2014

Design & Communication Graphics

Marking Scheme

Ordinary Pg. 3 Higher Pg. 12

2014 L.84/85_MS 2/20

2014 L.84/85_MS 3/20

A-1. The 3D graphic below shows a cone, a

cylinder and a sphere. The drawing on the right shows the

plan and elevation of the cone A. The elevation of the cylinder B which is in contact with the cone A and the plan of sphere C are also shown.

(a) Draw the plan of the cylinder B. (b) Draw the plan and elevation of

the sphere C when it has been moved into position C1 in contact with cone A and cylinder B.

A-3. The 3D graphic below shows a

tin of beans with a label wrapped around it.

The drawing on the right shows

the plan and elevation of the tin and the label before it is wrapped around the tin.

Complete the elevation showing

the label in the wrapped position.

A-2. The 3D graphic below

shows a building. The plan of a portion of the building is elliptical.

In the drawing on the

right shows the major axis AB of the ellipse. The focal points of the ellipse are also shown.

(a) Locate the minor

axis of the ellipse. (b) Draw the complete ellipse.

A-4. The 3D graphic below shows a litter bin. A set of isometric axes and a

partially completed outline drawing of a similar litter bin are shown on the right. The elevation and plan of the litter bin have been positioned relative to the axes as shown.

Complete the axonometric

projection.

SECTION A - Core - Answer Any Three of the questions on this A3 sheet

This examination paper must be returned at the end of the Examination – You must include your Name, School Name and Teacher Name on the front cover

MARKING SCHEME Total (20) (a) Projection to plan (3m) Centre of cylinder (4m) Cylinder (3m)

(b) Offset arcs (3m) Rotation (3m) Completion (2m)

Presentation (2m)

MARKING SCHEME Total (20) Division of label (3m) Transfer to circle (3m) Projection to elevation (3m) Horizontal movement (3m) Points (3m) Curves (3m)

Presentation (2m)

MARKING SCHEME

Total (20)

(a) Construction (3m) Axis (3m)

(b) Construction (4m) Points (4m) Curve (4m)

Presentation (2m)

MARKING SCHEME Total (20) Projection to plan (4m) Establish outline (4m) Complete plan (4m) Project to isometric (4m) Completion (2m)

Presentation (2m)

2014 L.84/85_MS 4/20

ExamCentre, Units 3/4, Fonthill Business Park, Fonthill Road, Dublin 22. Tel: (01) 616 62 62 Fax: (01) 616 62 63


Ordinary Level – Section (B)

L.84 Scale 1:1 Question B-1

MARKING SCHEME Total (45) (a) Base solid (5m) Horizontal solid (5m) Piercing points (12m) Lines of intersection (8m) Completion (5m) (b) Projections (2m) Outline (2m) Completion (2m) Presentation (4m)

2014 L.84/85_MS 5/20





MARKING SCHEME Total (45) Set up (4m) Spectator (4m) PP, GL and HL (6m) Vanishing Points (4m) Sight Lines (4m) Base Outline (6m) Heights (4m) Sloping Surface (6m) Completion (3m) Presentation (4m)

2014 L.84/85_MS 6/20





MARKING SCHEME Total (45) (a) Elevation Outline (4m) Completion (6m) Plan Outline (4m) Completion (6m) (b) Line of vision XY line (6m) Projections (4m) Heights (4m) Completion (7m) Presentation (4m)

2014 L.84/85_MS 7/20

C

A B

D

W E

S

N

80 85 90 90 85 85

65 70 75 80

90 90 85 80 80 85 90 90 85 80 75 75 80



Ordinary Level – Section (C)

L.84 Scale 1:1000 Question C-1

MARKING SCHEME Total (45) (a) Height lines (6m) Projectors (6m) Profile (7m) (b) Lowest point (3m) Altitude (3m) Completion (3m) (c) 5m parallel lines (5m) Plot points (4m) Curve (4m) Presentation (4m)

2014 L.84/85_MS 8/20





MARKING SCHEME Total (45) (a) Plan outline (6m) Elements (6m) Elevation outline (6m) Elements (7m) Curve (2m) (b) Outline (6m) Elements (6m) Curve (2m) Presentation (4m)

2014 L.84/85_MS 9/20





MARKING SCHEME Total (45) (a) Plan outline (4m) Elevation (4m) Completion (4m) (b) Base (5m) Back (4m) Sides (4m) Top (4m) Curved surface (8m) Completion (4m) Presentation (4m)

2014 L.84/85_MS 10/20

Fig. C-4(a)

Fig. C-4(b)





MARKING SCHEME Total (45) (a) Outline (4m) UV construction (4m) Dwell (2m) Vertical divisions (2m) SHM construction (6m) Completion (3m) (b) Set up (4m) Division (4m) Construction (8m) Curve (4m) Presentation (4m)

2014 L.84/85_MS 11/20





MARKING SCHEME Total (45) Relative positioning of parts (8m) Body (7m) Front end (3m) Back end (3m) Pins (3m) Canopy (8m) Wheels (3m) Drawing completion Hatching (3m) Centrelines (3m) Presentation (4m)

2014 L.84/85_MS 12/20

A-1. The 3D graphic below shows a

concrete stool and table as used in a garden.

A set of diametric axis are shown

on the right and the elevation and plan of the table have been positioned as shown.

Draw the axonometric projection

of the table.

A-3. The 3D graphic below shows

an arrangement of building blocks. The drawing on the right is a

partially completed perspective view of the cube, the cuboid and the triangular based prism.

(a) Complete the perspective

drawing of the yellow block. (b) Determine an auxiliary

vanishing point for the 45 degree sloping faces of the blue block and complete the drawing.

A-2. Two swimming pools in a holiday complex are shown opposite.

The drawing below shows the plan of the two pools and the adjacent wall as depicted by the two circles and the line L.

A third pool is required in the complex. It must be the largest

possible while leaving a walkway of five meters all around it. Determine the radius of the largest circle that can be drawn in

position A which has its circumference 5 mm from both circles and the line L. Draw the circle.

A-4. The 3D graphic below shows a sculpture

which is based on two intersecting tetrahedrons suspended in a metal disc.

The drawing on the right shows the plan

and elevation of the base of a tetrahedron.

(a) Complete the plan of the tetrahedron.

(b) Show clearly how to find the altitude of the tetrahedron and complete the elevation of the tetrahedron.

This examination paper must be returned at the end of the Examination – You must include your Name, School Name and Teacher Name on the front cover

SECTION A - Core - Answer Any Three of the questions on this A3 sheet

MARKING SCHEME Total (20) Projectors (4m) Front face (2m) Top (2m) Curve cons (3m) Curve (3m) Internal (2m)

Completion (4m)

MARKING SCHEME Total (20) 5mm offset (3 × 2m) 1st Locus cons (4m) 2nd Locus cons (4m) Loci cons (4m) Radius (2m)

MARKING SCHEME Total (20) Bisectors (3m) Completion (3m) Construction (4m) Altitude (6m)

Completion (4m)

MARKING SCHEME Total (20) Sight lines (2m) Projectors (2m) Complete base (6m) Auxiliary VP (4m)

Completion (6m)

2014 L.84/85_MS 13/20



Higher Level – Section (B)


MARKING SCHEME Total (45) (a) Set up ABC (6m) Projections ABD (2m) (b) Method (8m) Dihedral angle (8m) (c) Triangle (8m) Rectangle (5m) (d) Method (4m) Traces (4m)

2014 L.84/85_MS 14/20





MARKING SCHEME Total (45) (a) Elevation (2m) End elevation (2m) Projections (5m) Curves (6m) Plan (6m) (b) Cons (3m) Focal sphere (3m) F / V / DD (6m) (c) Method (6m) TS (6m)

2014 L.84/85_MS 15/20





MARKING SCHEME Total (45) (a) Base Solid Elevation (4m) Plan (4m) (b) Section (4m) Elevation (4m) Plan (4m) (c) Piercing points LHS (6m) Complete LHS (6m) Piercing points RHS (6m) Turning points RHS (4m) Complete RHS (3m)

2014 L.84/85_MS 16/20

A B C

D E

50 60 7575 70 65 65 60 5565757570 70 70 6060 7055 65 65 65

W E

S

N



Higher Level – Section (C)


MARKING SCHEME Total (45) (a) (i) Earthworks AB Parallel lines (10m) Intersections – curves (9m) (ii) Earthworks BC Arc (5m) Parallel lines (4m) Intersections – curves (7m) (b) (i) Plan of borehole (2m) Elevation of borehole (3m) Construction (3m) Completion (2m)

2014 L.84/85_MS 17/20

MARKING SCHEME Total (45) (a) Set up (5m) Construction for top (5m) Top circles (5m) Construction (5m) Curve (5m) (b) Projection (5m) Outline (5m) Sections (5m) Completion (5m)





2014 L.84/85_MS 18/20





MARKING SCHEME Total (45) (a) Set up (4m) Ellipse Construction (6m) Completion (6m) (b) Projection (6m) Curves (6m) Completion (6m) (c) Construction (6m) Completion (5m)

2014 L.84/85_MS 19/20

Fig. C-4(a) Scale 1:1

Fig. C-4(b) Scale 1:20




L.85 Scale Question C-4

MARKING SCHEME Total (45) (a) Set up (6m) Divisions (6m) Construction (6m) Curve (6m) (b) Set up (6m) Method (5m) Curve (5m) True Length (5m)

2014 L.84/85_MS 20/20





MARKING SCHEME Total (45) Relative positioning of parts (4m) Wall plate (5m) Table (5m) Connect piece (5m) Basin (5m) Support (5m) Completion (3m) Drawing completion (5m) Method (4m) Difference in distance (4m)

2014 l.84-85 ms -10 gc

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