Draw the Orthographic projection of Given pictorial view as shown in figure 1 in first and third angle of projection.
Figure 1 Pictorial view of object
We are considering that the above object placed in first angle, and the arrow shows the direction of front view of the object.
The following steps are describe how to draw front view, top view and side view of the given object
- Draw the reference line XY
- Draw line a’b’ perpendicular to
reference line.
- Draw a’f’ parallel to reference
line.
- Draw f’e’, e’d’, d’c’, c’b’ to
complete front view.
- Project all the corner of front
view vertically downward and perpendicular to reference line.
- Draw af, ed, dj, jI, gh and fh to complete the top view of the object.
Figure 2 Orthographic projection of object in First angle of projection
For Right hand side View
- Transfer top view corner to X1 Y1
line and shift these points to XY by taking O1 as a centre and projects all the points vertically
upward.
- Draw horizontal projection of all
the corners from front view
- The intersection of vertical and
horizontal projection gives the points of Right Hand Side View (RHSV)
For left hand side view
- Draw X2Y2 line perpendicular to XY
- From O2 draw a line inclined 450
as shown in figure. This is another method to transfer points for side
views.
- (Use any one method to draw side
view of object)
- Transfer all the corners of Top
View to inclined line and project vertically upwards.
- Again draw horizontal projection
line to intersect vertical projection.
- Join the intersecting points in a
sequence to complete the Left Hand Side View (LHSV).
Third angle of projection
Figure 3 shows the drawing in third angle of projection. Follow above drawing procedure to complete drawing in third angle of projection.
Figure 3 Orthographic projection of object in Third angle of projection
FV - Front View
TV - Top View
RHSV - Right hand side view
LHSV - Left hand side view
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