The document provides instructions for drawing the projections of a cone with a 40 mm diameter and 50 mm axis that is resting on one generator parallel to the vertical plane (VP) and horizontal plane (HP). It involves the following steps: 1) Drawing the front and top views of the cone by dividing a circle representing its base into 8 equal parts. 2) Drawing projectors from different points on the front view to the corresponding points on the top view. 3) Joining the corresponding points between the two views with straight lines to form the projections.

1. Prof.S.Rajendiran,
Ashoka Institution

2. University Problem
A cone 40 mm diameter and 50 mm axis
is resting on one generator on Hp and
parallel to VP
Draw it’s projections.
X Y
Approximate distance
40ø
Axis of cone
Draw circle as shown

3. X Y
Front view of cone
Top view of cone
50

4. X Y
Divide circle in to 8 equal
parts as shown
h
a
b
c
d
e
f
g

5. X Y
h
a
b
c
d
e
f
g
Draw Projector as shown

6. X Y
h
a
b
c
d
e
f
g
Join line as shown

7. X Y
h
a
b
c
d
e
g
f
a’ b’ d’ e’c’ g
’
f’h’
Mark points
as shown

8. X Y
h
a
b
c
d
e
g
f
a’ b’ d’ e’c’ g
’
f’h’ o’
Rotate the front
view as shown
Front view of cone

9. X Y
h
a
b
c
d
e
g
f
a’ b’ d’ e’c’ g
’
f’h’ o’
Draw the
Projector as
shown

10. X Y
h
a
b
c
d
e
g
f
a’ b’ d’ e’c’ g
’
f’h’ o’
Draw the
Projector as
shown and
mark the point
of Projector as
shown

11. X Y
h
a
b
c
d
e
g
f
a’ b’ d’ e’c’ g
’
f’h’ o’
a1
h1
g1
f1
e1
d1
c1
b1
a1
h1
g1
f1
e1
d1
c1
b1
Join the points
as Shown

12. h
a
b
c
d
e
g
f
X Ya’ b’ d’ e’c’ g
’
f’h’
o’
o’
a1
h1
g1
f1
e1
d1
c1
b1
o1
PLAN
ELEVATION
GENERATOR LYING AT HP
SCALE 1:1
ALL DIMENSIOND ARE IN mm
40
50
VP
HP