# National 5 Graphic Communication

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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