1. National 5 Graphic Communication
EXAM KNOWLEDGE
Line Types, Drawing Types, British Standards and Dimensioning

2. Line Types

3. Line Types
Construction
Outline
Hidden
Centre
Folding
Cutting Plane

4. Drawing Types
2 main types of drawings:
Pictorial
Orthograhic

5. Orthographic – 2D

6. Orthographic – 2D
In Britain we view it in 3rd Angle Projection 3 views Elevation End Elevation Plan Extra views Sectional True Shape Surface Development

7. Pictorial - 3D There are 4 main pictorial drawings:
1pt & 2pt Perspective
Isometric
Oblique
Planometric A B C E D

8. Perspective

9. 1pt & 2pt Perspective
Sketches Horizon Line Vanishing Points

10. Isometric

11. Isometric
Technical Drawing Drawn at 30º True representation Shows an object Sectioned to see internal

12. Planometric

13. Planometric
Technical drawing Base is a true plan, rotated. Drawn at 45º/45º Or Drawn at 30º/60º Used for internal view of a room/area.

14. Oblique

15. Oblique
Technical drawing Draw elevation Projected at 45º Measure half the distance back. Can see true size of a circle. Used for objects

16. Exam Knowledge
Expected to know... The different pictorials. The angles of each pictorial. What each pictorial would be used for.

17. British Standards
British Standards are the accepted way we apply standards to work in the industrial and commercial world. British Standards reduce any faults or confusion that could be made when developing design based work and ensure that people can communicate clearly with each other. It is a technical language that professional people become accustomed to using. Sometimes the work is stamped with the Kitemark.

18. Dimensioning
You must know the types of Dimesnioning: Parallel Chain You must know how to add dimensions to: Lines Circles Angles Curves

19. Parallel Dimensioning
Datum Line

20. Chain Dimensioning

21. Dimensioning a Circle
Always use the Ǿ symbol when it is a full circle.

22. Dimensioning an Angle
63˚

23. Dimensioning a Curve Only use the R symbol to donate an arc or curve.
Must point arrow to the centre.
R15
R15

24. Spot 8 Faults
There up to 10 faults in this drawing. Identify 8 of them and write what is wrong.