National%205%20Graphic%20Communication

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National 5 Graphic Communication

• EXAM KNOWLEDGE
• Line Types, Drawing Types, British Standards and
  Dimensioning

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Line Types
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Line Types
Construction
Outline
Hidden
Centre
Folding
Cutting Plane
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Drawing Types

• 2 main types of drawings
• Pictorial
• Orthograhic

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Orthographic 2D
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Orthographic 2D

• In Britain we view it in 3rd Angle Projection
• 3 views
• Elevation
• End Elevation
• Plan
• Extra views
• Sectional
• True Shape
• Surface Development

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Pictorial - 3D

• There are 4 main pictorial drawings
• 1pt 2pt Perspective
• Isometric
• Oblique
• Planometric

A
B
C
E
D
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Perspective
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1pt 2pt Perspective

• Sketches
• Horizon Line
• Vanishing Points

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Isometric
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Isometric

• Technical Drawing
• Drawn at 30º
• True representation
• Shows an object
• Sectioned to see internal

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Planometric
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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.

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Oblique
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Oblique

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

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Exam Knowledge

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

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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.

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Dimensioning

• You must know the types of Dimesnioning
• Parallel
• Chain
• You must know how to add dimensions to
• Lines
• Circles
• Angles
• Curves

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Parallel Dimensioning
Datum Line
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Chain Dimensioning
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Dimensioning a Circle

• Always use the ? symbol when it is a full circle.

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Dimensioning an Angle
63
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Dimensioning a Curve

• Only use the R symbol to donate an arc or curve.
• Must point arrow to the centre.

R15
R15
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Spot 8 Faults
There up to 10 faults in this drawing. Identify
8 of them and write what is wrong.