Graphic Communication
Unit 8
Orthographic Drawing
Orthographic Projection
Orthographic means straight and perpendicular drawings or pictures.
If we apply this to a drawing, then orthographic projection would be looking at the
surface of an object straight and perpendicular! i.e., at 90o and drawing what we see.
On a sheet of paper, the three views are drawn in exactly the same way. The Plan is
drawn above the Elevation and the End Elevation, is drawn to the left (or right) of
the Elevation.
The completed views have been drawn in 3rd angle projection. Use the layout shown
below to complete all the Orthographic Drawings in this Unit.
A3 SHEET OF PAPER
PLAN
END ELEVATION
NAME
CLASS
END ELEVATION
ELEVATION
DRAWING TITLE
TASK
DATE
The following rules apply to the layout of a sheet of A3 paper for the following
Orthographic Projection tasks.
1. Dimensions for the start point for at least one of the views may be given, if not
then YOU will have to decide the layout of the views.
2. Dimensions are ALWAYS in millimetres (mm)
3. Always show construction lines. DO NOT rub them out.
4. Construction lines MUST be light.
5. READ the INSTRUCTIONS.
Design and Technology Department
Page 1
Graphic Communication
Unit 8
Orthographic Drawing
Task 1
The pictorial view of a PACKAGE is shown
opposite.
Draw in 3rd angle projection:
(1)
the elevation
(2)
the plan
(3)
both end elevations
Use a 45o Bounce Line to help you.
A
Leave a space of 30 mm between each of the views.
A3 SHEET OF PAPER
A
ELEVATION
NAME
CLASS
Design and Technology Department
DRAWING TITLE
TASK
DATE
Page 2
Graphic Communication
Unit 8
Orthographic Drawing
Task 2
The pictorial view of a TOY COOKER
is shown opposite.
Draw in 3rd angle projection:
(1)
the elevation
(2)
the plan
(3)
both end elevations
Use a 45o Bounce Line to help you.
Extension
If the cooker rings are Ø20 can you draw
them on the PLAN with equal gaps between
them and around the edges
A
Leave a space of 30 mm between each of the views.
1
A3 SHEET OF PAPER
180
A
ELEVATION
NAME
CLASS
Design and Technology Department
DRAWING TITLE
TASK
DATE
Page 3
Graphic Communication
Unit 8
Orthographic Drawing
Task 3
The pictorial view of TWO BOOKS
is shown opposite.
Draw in 3rd angle projection:
(1)
the elevation
(2)
the plan
(3)
both end elevations
Note: There is hidden detail
in this drawing
A
Leave a space of 30 mm between each of the views.
A3 SHEET OF PAPER
A
ELEVATION
NAME
CLASS
Design and Technology Department
DRAWING TITLE
TASK
DATE
Page 4
Graphic Communication
Unit 8
Orthographic Drawing
Task 4
The pictorial view of a TOY TRUCK
is shown opposite.
Draw in 3rd angle projection:
(1)
the elevation
(2)
the plan
(3)
both end elevations
Note:There is hidden detail in this
drawing
Extention
On all views add wheels of Ø40mm
and width 12mm in a suitable position.
A
Leave a space of 30 mm between each of the views.
A3 SHEET OF PAPER
A
ELEVATION
NAME
CLASS
Design and Technology Department
DRAWING TITLE
TASK
DATE
Page 5
Graphic Communication
Unit 8
Orthographic Drawing
Task 5
The pictorial view of a CASH REGISTER
is shown opposite.
Draw in 3rd angle projection:
(1)
the elevation
(2)
the plan
(3)
both end elevations
A
Note: there is hidden detail
in this drawing
Leave a space of 30 mm between each of the views.
A3 SHEET OF PAPER
A
ELEVATION
NAME
CLASS
Design and Technology Department
DRAWING TITLE
TASK
DATE
Page 6
Graphic Communication
Unit 8
Orthographic Drawing
Task 6
The pictorial view of a
DESK TIDY is shown opposite.
Draw in 3rd angle projection:
(1)
the elevation
(2)
the plan
(3)
both end elevations
Note: There is hidden detail
in this drawing
Leave a space of 30 mm between each of the views.
A3 SHEET OF PAPER
A
ELEVATION
NAME
CLASS
Design and Technology Department
DRAWING TITLE
TASK
DATE
Page 7
Graphic Communication
Unit 8
Orthographic Drawing
Task 7
The pictorial view of a CABINET
is shown opposite.
Draw in 3rd angle projection:
(1)
the elevation
(2)
the plan
(3)
both end elevations
You will need to scale your drawing 1:5
(i.e. divide all sizes by 5)
Material thickness = 25mm
Note:There is hidden detail in this drawing
A
Leave a space of 30 mm between each of
the views.
A3 SHEET OF PAPER
A
END ELEVATION
NAME
CLASS
Design and Technology Department
DRAWING TITLE
TASK
DATE
Page 8
Graphic Communication
Unit 8
Orthographic Drawing
Task 8
The pictorial view of a HOUSE is shown below.
Draw :
(1)
the elevation
(2)
the plan
(3)
both end elevations
You will need to scale your drawing 1:2 (i.e. divide all sizes by 2)
There is hidden detail in this drawing
Leave a space of 30 mm between each of the views.
A3 SHEET OF PAPER
135
A
ELEVATION
NAME
CLASS
Design and Technology Department
DRAWING TITLE
TASK
DATE
Page 9
Graphic Communication
Unit 8
Orthographic Drawing
Extension 1
Draw :
(1)
the elevation
(2)
the plan
(3)
both end elevations
There is hidden detail in this drawing
Add the hands to the clock and a suitable
numbering system
Leave a space of 20 mm between each of the views.
SHEET OF A3 PAPER
CL
A
Design and Technology Department
Page 10