Pictorial drawing
Ice-breaker activity
• Orthographic drawings
show the front, top and
side views of a 3D object
in separate drawings.
• Pictorial drawings show
the front, top and side
views of a 3D object in
one drawing.
David Culloty ID : GOO380167
What is pictorial drawing?
• Pictorial drawing is a way of
showing 2D objects in 3D.
• Pictorial drawings show the
front, top and side views of a
3D object in one drawing.
• Pictorial drawings can be
drawn with drawing
equipment or freehand.
Oblique drawing
• Oblique drawing is the
simplest type of pictorial
drawing.
• When we create an
oblique drawing, the
front view of the object
45°
keeps its true shape.
• Lines are then drawn at
45° from the front to
give the object depth.
Oblique drawing
Example: The elevation and plan of an
object are shown opposite. Create an
oblique drawing of the object.
1. Draw the front face (elevation) of the
object. Draw 45° lines from the corners of
the front face as shown.
2. We can see from the plan that the object
has a depth of 20 mm. Use a compass to
mark the depth of the object along the 45°
lines.
3. Connect the depth marks with lines that
are parallel to the lines of the front face to
complete the oblique drawing.
(online video)
Oblique drawing
Recap video)
Drawing board exercise
1. The elevation
and plan of an
abbreviation
(based on a 10 mm
× 10 mm grid) are
shown here. Create
an oblique drawing
of the
abbreviation.
Rendering
Pencils Colouring pencils
Drawing board exercises
2. The elevation and
plan of an abbreviation
(based on a 10 mm ×
10 mm grid) are shown
here. Create an oblique
drawing of the
abbreviation.
Drawing board exercises
3. The elevation
and plan of an
abbreviation
(based on a 10
mm × 10 mm
grid) are shown
here. Create an
oblique
drawing of the
abbreviation.
Drawing board exercises
4. The elevation and
plan of an
abbreviation (based
on a 10 mm × 10 mm
grid) are shown here.
Create an oblique
drawing of the
abbreviation.
Drawing board exercises
5. The elevation and plan of an abbreviation
(based on a 10 mm × 10 mm grid) are shown
here. Create an oblique drawing of the
abbreviation.
Drawing board exercises
6. The elevation
and plan of an
abbreviation
(based on a 10 mm
× 10 mm grid) are
shown here.
Create an oblique
drawing of the
abbreviation.
Isometric drawing
• Isometric drawing is
another type of
pictorial drawing.
• When we create an 30° 30°
isometric drawing, the
front view of the
object does not keep
its true shape.
• Lines are then drawn
at 30° from the front
to give the object
depth.
Isometric drawing
• To create an isometric drawing of
this object we: • then we subtract a part
from it to finish the
• first draw a rectangular drawing.
prism in isometric
Isometric drawing
Step 1: Creating an isometric drawing
1. Draw a vertical line. Draw 30° lines in both
directions from the bottom end of the
vertical line as shown.
2. Mark the height (50 mm) of the object on
the vertical line and the length (80 mm) and
depth (60 mm) of the object on the 30° lines.
3. Draw 30° lines in both directions from the
height mark on the vertical line. Draw
vertical lines from the length and depth
marks on the bottom 30° lines to meet the
top 30° lines.
4. Complete the top of the object by drawing
more 30° lines as shown. We have now
completed an isometric drawing of a
rectangular prism.
Isometric drawing
Step 2: Subtracting parts from an
isometric drawing
1. Use the measurements from the
orthographic projection to draw the
part you want to subtract on the
outside faces of the rectangular prism.
2. Give the part depth by drawing 30°
lines into the object from the outside
faces as shown.
3. Remove the lines that are not
required and darken finished detail
lines to complete the isometric
drawing of the object.
Drawing board exercises
Rendering recap
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercises
Drawing board exercise
1. Orthographic
views and a pictorial
view of an object are
shown here. Use the
subtracting parts
from an isometric
drawing method to
create an isometric
drawing of the
object.
Drawing board exercises
2. Orthographic
views of an object
are shown here.
Create an isometric
drawing of
the object.
Drawing board exercises
3. Orthographic
views of an object
are shown here.
Create an isometric
drawing of
the object.
Drawing board exercises
4. Orthographic
views of an object
are shown here.
Create an isometric
drawing of
the object.
Drawing board exercises
5. Orthographic
views of an object
are shown here.
Create an isometric
drawing of
the object.
