Design & Communication. Graphics

Transcription

1 L.84/85_MS 1/20 L.84/85 Design & Communication Graphics Marking Scheme Ordinary Pg. 3 Higher Pg. 12

2 L.84/85_MS 2/20

3 SECTION A - Core - Answer any three of the questions on this A3 sheet A-1. The 3D graphic below shows a rugby ball. The outline of the rugby ball is in the shape of an ellipse. In the drawing on the right, AB is the major axis of the ellipse. The focal points are also shown. (a) Locate the minor axis of the ellipse. A-3. The 3D graphic below shows a jar of jam and a label which has been wrapped around it. The drawing on the right shows the plan and elevation of the label and the cylindrical portion of the glass jar. Complete the elevation showing the label in the wrapped position. (b) Draw the ellipse. Total (20) (a) Minor axis Arcs (4m) Completion (4m) (b) Method (6m) Curve (4m) Presentation (2m) Total (20) Division of label (3m) Transfer to circle (3m) Projection to elevation (3m) Horizontal movement (3m) Points (3m) Curves (3m) Presentation (2m) STRAWBERRY JAM A-2. The 3D graphic below shows a portion of a skyscraper. A-4. The 3D graphic below shows drinking glasses based on a cylinder and a truncated cone. A set of isometric axes and a partially completed outline drawing of the building are shown on the right. The elevation and incomplete plan of the building have been positioned relative to the axes as shown. Complete the axonometric projection. The drawing on the right shows the elevation and partially completed plan of the truncated cone A which is in contact with cylinder B. (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 and in contact with the given truncated cone A and cylinder B. Total (20) Total (20) Projections from plan (4m) Projections from elevation (4m) Establish end points (5m) Completion (5m) Presentation (2m) (a) Projection to plan (3m) Centre of cylinder (4m) Cylinder (3m) (b) Offset arcs (3m) Rotation (3m) Completion (2m) Presentation (2m) This examination paper must be returned at the end of the examination You must include your Name, School Name and Teacher s Name on the front cover L.84/85_MS 3/20

4 L.84/85_MS 4/20 Elevation Outline of central hall (4m) Outline of main building (4m) Intersection points (4m) Intersection lines (4m) Plan Outline of central hall (4m) Outline of main building (4m) Intersection points (4m) Intersection lines (4m) End View Central hall (4m) Main building (4m) Hidden detail (1m) Presentation (4m) Ordinary Level Section (B) L.84 Scale 1:1 Question B-1

5 Plan (8m) PP, GL and HL (12m) Vanishing Points (6m) Walls (6m) Roof (6m) Completion (3m) Presentation (4m) L.84/85_MS 5/20 Ordinary Level Section (B) L.84 Scale 1:1 Question B-2

6 Ordinary Level Section (B) L.84 Scale 1:1 Question B L.84/85_MS 6/20 (a) Outline of elevation (6m) Completion (6m) (b) Outline of plan (6m) Completion (5m) (c) X1 Y 1 (4m) Projectors (4m) Heights (4m) Completion (6m) Presentation (4m)

7 L.84/85_MS 7/ A C B D (a) Height lines (7m) Projectors (7m) Points (5m) Curve (3m) E (b) Join CDE (3m) Determine strike (3m) X 1 Y 1 (3m) Projectors (3m) Determine dip (3m) (c) Bottom surface stratum (4m) Presentation (4m) Ordinary Level Section (C) L.84 Scale 1:1000 Question C-1

8 L.84/85_MS 8/20 (a) Plan outline (6m) Elements (6m) Elevation outline (6m) Elements (7m) Curve (2m) (b) Outline (6m) Elements (6m) Curve (2m) Presentation (4m) Ordinary Level Section (C) L.84 Scale 1:1 Question C-2

9 L.84/85_MS 9/20 (a) Plan (6m) Elevation (6m) Hidden detail (1m) (b) End view (6m) (b) Base (5m) Plane surfaces (5m) Curved surfaces (8m) Completion (4m) Presentation (4m) Ordinary Level Section (C) L.84 Scale 1:1 Question C-3

10 L.84/85_MS 10/20 (a) Outline (4m) Vertical divisions (2m) SHM construction (6m) Dwell (2m) UV construction (4m) Completion (3m) (b) Set up (4m) Division (4m) Construction (8m) Curve (4m) Presentation (4m) Ordinary Level Section (C) L.84 Scale 1:1 Question C-4

11 L.84/85_MS 11/20 B SECTION B-B B Relative positioning of parts (6m) Support Bracket (6m) Net Pole (6m) Crank Bar (6m) Crank Top (5m) Clamp Screw (4m) Completion (8m) Presentation (4m) Ordinary Level Section (C) L.84 Scale 1:1 Question C-5

12 SECTION A - Core - Answer any three of the questions on this A3 sheet A-1. The 3D graphic below shows a concrete structure housing an outdoor fire pit. A set of trimetric axes is shown on the right. The elevation and plan of a portion of the concrete structure have been positioned as shown. Draw the axonometric projection of the concrete structure. Total (20) Projections (3m) Points (3m) Base (3m) Curve construction (4m) Curve (4m) Completion (3m) Y A-3. The 3D graphic below shows children s playing blocks. A small 3D drawing, which is also given, shows an arrangement of three of the playing blocks. The drawing on the right shows a partially completed perspective view of the arrangement of blocks. (a) Complete the perspective drawing of the two cuboids. (b) Determine an auxiliary vanishing point for the 25 º sloping faces of the triangular block and complete the drawing. 25 Z X Total (20) Projectors (2m) Bottom block (2m) Completion (2m) Middle block (2m) Completion (2m) AVP (4m) Roof (3m) Completion (3m) A-2. The 3D graphic below shows a storage container for pencils. A small 3D drawing, which is also given, shows that the lid is based on a cone which is cut by six vertical cutting planes resulting in a hexagonal base, six vertical surfaces and the conical surface The drawing on the right shows the plan and incomplete elevation of the lid.. (a) Complete the elevation of the lid. (b) Determine and indicate the vertical and horizontal traces of any one of the six cutting planes which cut the cone to create the lid. A-4. The 3D graphic below shows a sculpture based on a series of suspended cubes. The drawing on the right shows the plan of a suspended cube which has one apex resting on the horizontal plane. (a) Determine the true shape of one of the surfaces of the cube. (b) Draw the elevation of the cube. Total (20) (a) Method of finding points in elevation (8m) Completion of curves (6m) (b) Traces (2 3m) Total (20) TL of one edge (4m) TS of one face (4m) Method (4m) Base (4m) Completion (4m) 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 L.84/85_MS 12/20

13 (a) Set up (9m) (b) Method (9m) Dihedral Angle (9m) (c) Method (5m) Traces (4m) (d) Method (5m) Completion (4m) Higher Level Section (B) L.85 Scale 1:1 Question B L.84/85_MS 13/20

14 Draw plan (4m) Set-up Spectator/picture plan (2m) Plan - vanishing points (2m) Elevation - lines & vanishing points (4m) Projection lines (2m) Base (5m) Auxiliary vanishing points (4m) Top Set-up height lines (4m) Clock body (7m) Clock face (6m) Pendulum (5m) Higher Level Section (B) L.85 Scale 1:100 Question B L.84/85_MS 14/20 A

15 (a) Elevation Cone (4m) Parabola (7m) Completion (2m) End Elevation Cone (4m) Prism (5m) (b) Method (6m) Determining points (5m) Draw curve (4m) (c) Method (4m) Determining points (2m) Draw true shape (2m) Higher Level Section (B) L.85 Scale 1:1 Question B L.84/85_MS 15/20

16 Dip Altitude L.84/85_MS 16/ X D E Y C B A F 90 (a) Earthworks AB Parallel lines (3m) Curve (3m) Earthworks BC Divide BC into 3 (5m) Arc (4m) Join to B (3m) Parallel lines (3m) Curve (3m) Arc (4m) Join (3m) Parallel Lines (3m) Curve (3m) Intersection (1m) (b) Join DEF and draw strike (2m) X1Y1 and projections (3m) Dip (1m) Altitude (1m) Higher Level Section (C) L.85 Scale 1:1000 Question C-1

17 L.84/85_MS 17/20 R 90 (a) Set up (5m) Construction for top (5m) Top circles (5m) Construction (5m) Curve (5m) (b) Projection (5m) Outline (5m) Sections (5m) Completion (5m) Higher Level Section (C) L.85 Scale 1:1 Question C-2

18 L.84/85_MS 18/20 Higher Level Section (C) L.85 Scale 1:100 Question C-3 (a) Outline of plan (8m) Determine apex in elevation (6m) Complete elevation (8m) Complete plan (4m) (b) Construction (6m) Completion (4m) (c) Construction (4m) True shape (3m) Circle (2m) Dih Angle R 100

19 L.84/85_MS 19/20 Fig. C-4(a) Higher Level Section (C) L.85 Scale 1:1 Question C-4 45 Fig. C-4(b) (a) Draw given view (5m) Construction for movement of A (5m) Locate P in new positions (5m) Curve (4m) (b) Elevation (4m) Plan (4m) Division of plan (4m) Heights in elevation (4m) Determine points (4m) Draw curve (4m) Hidden detail (2m)

20 L.84/85_MS 20/20 Relative positioning of parts (6m) Base unit (5m) Handle (5m) Arm (5m) Link (4m) Sliding block (4m) Cutting insert (5m) Lock M8 bolt (3m) Medium M8 bolt (2m) M8 nut (2m) Short M8 bolt (2m) Washer (2m) Higher Level Section (C) L.85 Scale 1:1 Question C-5 R L L