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I - 7
March 5, 2008
• Trade ¼” / 1/8”-scale worksheet with a partner. Check each other’s measurements –
– Put a check next to the # if correct– Put an “X” next to the # if incorrect
• Fix any incorrect answers.
• You have ~8 minutes
DESIGN DRAWINGS
• An engineer designs an object.
• How many drawings are needed to communicate the design to the manufacturer (people who make it)?
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3-VIEW DRAWINGS
• Orthographic Projections– What other words use the prefix ORTHO?
• Orthodontist, Orthopedic, Orthogonal, Orthodox– Orthographic refers to looking straight at an
object• Top View• Front View• Right Side View• Bottom View• Back View• Left Side View
Top ViewFront ViewRight Side View
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3-VIEW DRAWINGS
TOP VIEW
FRONT VIEW RT SIDE VIEW
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• Why use orthographic projections?– They are sufficient for correctly manufacturing
an object as the designers intended.
3-VIEW DRAWINGS
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3-VIEW DRAWINGS
TOP VIEW
FRONT VIEW RT SIDE VIEW
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3-VIEW DRAWINGS
1
7
3 2
45
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Orthographic Projections
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3-View Worksheet #1
Orthographic Projections
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Orthographic Projections
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Orthographic Projections
Orthographic Projections
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Homework• Complete the front and back of both
orthographic projection worksheets• Have steps 2 and 3 COMPLETE in your
group notebook for Monday’s class• Your design drawings in Step 2 should
have dimensions: how big is each object?
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Sources
• ITEA “Colonizing the Moon Challenge” Draft Document curriculum
• Wright, R. Thomas. Technology. Muncie: G-W, 2008.
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