orthographic projection 2 engineering108.com
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engineering108.com
Project FUNDAH e a r i t L e a r n i t
Let’s make engineering more easy
engineering108.com
Orthographic ProjectionPart-2
engineering108.com
Select a Front ViewThe object’s longest dimension should be presented as a width.
Inappropriate
First choice
GOOD
Second choice
Waste more space
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Inappropriate
The adjacent views that are projected from the selected front view should appear in
its natural position.
Select a Front View
engineering108.com
First angle system Third angle system
PROJECTION SYMBOLS
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x y
FRONT VIEW
TOP VIEW
L.H.SIDE VIEWFOR F.V.
FOR S.V.
FOR T.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
ORTHOGRAPHIC PROJECTIONS
1
engineering108.com
FOR F.V.FOR S.V.
FOR T.V.
X Y
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
ORTHOGRAPHIC PROJECTIONS
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
2
engineering108.com
FOR F.V.FOR S.V.
FOR T.V.
ORTHOGRAPHIC PROJECTIONS
X Y
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
3
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
engineering108.com
FOR T.V.
FOR S.V.
ORTHOGRAPHIC PROJECTIONS
FOR F.V.
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
X Y
4
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
engineering108.com
FOR T.V.
FOR F.V.
FOR S.V.
ORTHOGRAPHIC PROJECTIONS
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
X Y
5
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
engineering108.com
FOR T.V.
FOR F.V.FOR S.V.
ORTHOGRAPHIC PROJECTIONS
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
X Y
6
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
engineering108.com
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
X Y
FOR T.V.
FOR F.V.
FOR S.V.
ORTHOGRAPHIC PROJECTIONS
7
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
engineering108.com
X Y
50
20
25
25 20
FOR T.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
8
ORTHOGRAPHIC PROJECTIONS
FRONT VIEW
TOP VIEW
engineering108.com
FOR T.V.
FOR F.V.FOR S.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
9
ORTHOGRAPHIC PROJECTIONS
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
X Y
engineering108.com
FOR T.V.
FOR S.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
10ORTHOGRAPHIC PROJECTIONS
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
X Y
engineering108.com
FOR T.V.
FOR S.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
11ORTHOGRAPHIC PROJECTIONS
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
X Y
engineering108.com
FOR T.V.
FOR S.V. FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
12
ORTHOGRAPHIC PROJECTIONS
FRONT VIEW
TOP VIEW
L.H.SIDE VIEW
X Y
engineering108.com
x y
FV35
35
10
TV
302010
40
70
O
FOR T.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV AND TV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
13
ORTHOGRAPHIC PROJECTIONS
engineering108.com
SV
TV
yx
FV
30
30
10
30 10 30
ALL VIEWS IDENTICAL
FOR T.V.
FOR S.V. FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
14
ORTHOGRAPHIC PROJECTIONS
engineering108.com
x y
FV SV
TV
1040 60
60
40
ALL VIEWS IDENTICALFOR T.V.
FOR S.V. FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
15
ORTHOGRAPHIC PROJECTIONS
engineering108.com
FOR T.V.
FOR S.V. FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW THREE VIEWS OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
16ORTHOGRAPHIC PROJECTIONS
x y
FV SV
ALL VIEWS IDENTICAL
40 60
60
40
10
TOP VIEW
engineering108.com
40 20
30 SQUARE
20
50
60
30
10
F.V.S.V.
OFOR S.V. FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV AND SV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
17
ORTHOGRAPHIC PROJECTIONS
FRONT VIEW L.H.SIDE VIEW
X Y
engineering108.com
50
80
10
30 D
TV
O
FOR T.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV AND TV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
18ORTHOGRAPHIC PROJECTIONS
40
10
45
FV
OX Y
engineering108.com
X Y
FV
O
40
10
10
TV
25
25
30 R
100
103010
20 D
FOR F.V.O
PICTORIAL PRESENTATION IS GIVENDRAW FV AND TV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
19
ORTHOGRAPHIC PROJECTIONS
FOR T.V.
engineering108.com
O
20 D
30 D
60 D
TV
10
30
50
10
35
FV
X Y
RECT.SLOT
FOR T.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV AND TV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
20ORTHOGRAPHIC PROJECTIONS
TOP VIEW
engineering108.com
O O
40
25
80
F.V.
10
15
25
25
25
25
10
S.V.
FOR S.V. FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV AND SV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
21
ORTHOGRAPHIC PROJECTIONS
engineering108.com
450
X
FV
Y
30
40
TV
30 D
40
4015
O
FOR T.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV AND TV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
22ORTHOGRAPHIC PROJECTIONS
engineering108.com
O
O
20
2015
40
100
30
6030
20
20
50
HEX PART
FOR S.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV ABD SV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
23
ORTHOGRAPHIC PROJECTIONS
FRONT VIEW L.H.SIDE VIEW
engineering108.com
O
10
30
10
80
30
T.V.
O
10
30
4020
F.V.
X Y
FOR T.V.
FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV AND TV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
24ORTHOGRAPHIC PROJECTIONS
FRONT VIEW
TOP VIEW
engineering108.com
LSV
Y
25
25
1050
FV
X
10 10 15
O
FOR S.V.FOR F.V.
PICTORIAL PRESENTATION IS GIVENDRAW FV AND LSV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
25
ORTHOGRAPHIC PROJECTIONS
engineering108.com
YX
F.V. LEFT S.V.
20 2010
15
15
1530
10
30
50
15
FOR S.V.
FOR F.V.
O
PICTORIAL PRESENTATION IS GIVENDRAW FV AND SV OF THIS OBJECT
BY FIRST ANGLE PROJECTION METHOD
26
ORTHOGRAPHIC PROJECTIONS
engineering108.com
QUIZ
engineering108.com
1. Which should be the natural position of the light
bulb ? (20 sec)
c)
b)a
d)
5 10 15 200
engineering108.com
A
B
C
D E
F
2. Which are the necessary views ? (60 sec)
a) A-C-E
b) E-B-D
c) E-A
d) E-C
15 30 45 600
engineering108.com
3. Which is in correct first angle projection ? (180 sec)
a) b)
c) d)
45 90 135 1800
engineering108.com
4. Which is in correct third angle projection ? (180 sec)
a) b)
c) d)
45 90 135 1800
engineering108.com
5. Which is a wrong 3rd angle orthographic views ?
(180 sec)
45 90 135 1800
a) b)
c) d)
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