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ORTHOGRAPHIC PROJECTION. HOW TO LAYOUT YOUR DRAWING VIEWS. FIRST-ANGLE PROJECTION. The U.S. and Canada uses Third-Angle Projection. The rest of the world uses first-angle projection. All countries start with a FRONT VIEW. THIRD- ANGLE PROJECTION.

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Presentation Transcript
orthographic projection
ORTHOGRAPHIC PROJECTION

HOW TO LAYOUT YOUR DRAWING

VIEWS

first angle projection
FIRST-ANGLE PROJECTION

The U.S. and Canada uses Third-Angle Projection.

The rest of the world uses first-angle projection.

All countries start with a FRONT VIEW.

third angle projection
THIRD- ANGLE PROJECTION

THIS IS THE LAYOUT USED IN THE UNITED STATES & CANADA.

selecting a front view
SELECTING A FRONT VIEW

THE CRITICAL PART OF LAYING OUT YOUR DRAWING IS SELECTING YOUR FRONT VIEW.

  • MINIMAL HIDDEN LINES
  • STABLE - SO HEAVIEST PART IS ON BOTTOM
  • USE THE MOST BASIC PROFILE
common error 4
COMMON ERROR #4

DON\'T BE BEHIND THE

EIGHT BALL!

summary
SUMMARY:

THE U.S. AND CANADA USE THIRD-ANGLE PROJECTION FOR DRAWING LAYOUT.

THE MOST CRITICAL PART OF THE LAYOUT IS THE SELECTION OF THE FRONT VIEW

  • FRONT VIEW SHOULD SHOW:
  • THE MOST BASIC PROFILE
  • THE FEWEST HIDDEN LINES
  • THE MOST STABLE POSITION
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