National 5 Graphic Communication EXAM KNOWLEDGE Line Types, Drawing Types, British Standards and Dimensioning
Line Types Line Types Constructio n Outline Hidden
Centre Folding Cutting Plane Drawing Types 2 main types of drawings:
o Pictorial o Orthograhic Orthographic 2D
Orthographic 2D In Britain we view it in 3rd Angle Projection 3 views Elevation End Elevation Plan
Extra views Sectional True Shape Surface Development Pictorial - 3D There are 4 main pictorial
drawings: o 1pt & 2pt Perspective B o Isometric o
Oblique C o Planometric E D
A Perspective 1pt & 2pt Perspective Sketches
Horizon Line Vanishing Points Isometric Isometric Technical Drawing
Drawn at 30 True representation Shows an object Sectioned to see internal
Planometric Planometric Technical drawing Base is a true plan, rotated. Drawn at 45/45
Or Drawn at 30/60 Used for internal view of a room/area. Oblique
Exam Knowledge Expected to know... The different pictorials. The angles of each pictorial. What each pictorial would be used for.
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. Dimensioning
You must know the types of Dimesnioning: Parallel Chain You must know how to add dimensions to: Lines
Circles Angles Curves Parallel Dimensioning Datum Line
Chain Dimensioning Dimensioning a Circle Always use the symbol when it is
a full circle. Dimensioning an Angle 63 Dimensioning a Curve Only
use the R symbol to donate an arc or curve. R1 5 Must
5 R1 point arrow to the centre. Spot 8 Faults
There up to 10 faults in this drawing. Identify 8 of them and write what is wrong.
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