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• Get pencil and ruler
• Erase old guide lines
Egg Crash Vehicle: Orthographic Drawing
Mr. Maguire
Grade 7
Great Neck South Middle School
An Orthographic projection shows three distinct and different views of the same subject.
What is an Orthographic Projection?
Front View
Front View
Top View
Front View
Top View
Top View
Front View Right Side View
Side View
Top View
Front View Right Side View
Orthographic Projection
Ruler
Line Weight
Object lines –Dark
Hidden Lines Medium
Guidelines Very Light
Dimension Lines Medium
Connect the x’s.
Boxes
Wheels
Draw light guidelines from each side of wheel to top of paper
Guidelines
Drawing top view wheels
frontrear
¼”
Wheel Placement
¼”¾”
Wheel Placement
Hidden Lines
Axles
Draw a light guideline from the middle of each set of wheels.
Axles
Front
Front View Drawing
Locate all points that define a change of angle or direction (corners). Connect them with the appropriate lines.
Front
Front View Drawing
Show objects inside your car with hidden lines.
Front
FrontFront
Top View
Top View & Hidden Lines
FrontFront
DimensioningA dimension line has 3 parts
1. A dimension in inches
3 ½ “
DimensioningA dimension line has 3 parts
2. A dimension line
3 ½ “
DimensioningA dimension line has 3 parts
3. Extension lines
3 ½ “
You must draw 6 dimensions on your drawing
Dimensioning Styles
1 ½”dia.
Do not dimension inside object!!
4”
2 ¼”
¾”
