Transcript Orthographic Introductioin

What is Orthographic Projection?
Ortho – from a Greek word meaning
‘straight’, ‘right’ or ‘square’.
Graphic – from a Greek word meaning
‘to draw’.
Orthographic – means to draw looking
‘straight on’ or ‘square on’ to the object.
To see the exact shape of a surface we
must look at it ‘square on’. That is at 90
degrees or at right angles to the surface.
Boclair Academy Technical
Department
1
Elevation
Ground Line
Elevation
Boclair Academy Technical
Department
2
End Elevation
Ground Line
Elevation
Boclair Academy Technical
Department
End Elevation
3
Plan
Plan
Ground Line
Elevation
Boclair Academy Technical
Department
End Elevation
4
Summary
Plan
GL
Elevation
End Elevation
Always draw the Elevation & End Elevation resting on the Ground Line.
The Plan must always be drawn directly above the Elevation.
Boclair Academy Technical
Department
5
D raw o n A 3 :
2 .T h e P al n .
P LAN
O r th o g ra p h ci V ei w s
1 .T h e E el va t oi n .
8 0m m
R 5m m
3 .T h e E n d E el va t oi n .
6 0mm
E
AT
LEV
EN
DE
OI N
LEV
A
T OI
6 0m m
8 0mm
4 0mm
P al n
3 0mm
7 0mm
4 .A n E E
/ el va t oi n to th e
LH S o f th e e el va t oi n .
G ro u n d L ni e
E el va t oi n
8 0mm
R 2 0m m
1 6 0m m
3 0m m
E n d E el va t oi n
7 0m m
1 4 0m m
4 5m m
Boclair Academy Technical
Department
6
N