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Dimensioning Part I

This guide covers the essential aspects of dimensioning in drafting, focusing on dimension arrangement, styles, and creating customized dimension styles for mechanical and architectural drawings. You'll learn about unidirectional and aligned dimensioning techniques, understanding dimension style management, and overriding existing dimension settings. The course includes practical examples, drawing angles, and quizzes to test your understanding. Ideal for students and professionals looking to enhance their drafting skills in a structured manner.

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Dimensioning Part I

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  1. Dimensioning Part I Professor: Dr. Miguel Alonso Jr.

  2. Outline • Dimensioning Arrangement • Dimension Styles • Creating Dimension Styles • Making your own dimension style • Overiding Existing Dimension Styles • Drawing Dimensions • Drawing Linear Dimensions • Dimensioning Angled Surfaces and Auxiliary Views • Dimensioning Angles

  3. Dimensioning Arrangment • Unidirectional Dimensioning • Used in mechanical drafting • All dimensions and notes are placed horizontally on the drawing • Aligned Dimensioning • Used in structural or architectural drawings • Dimension numbers are lined up with the dimension lines

  4. Dimension Styles • The appearance, size, style of text, color of dimension line, spacing is controlled by the dimension style • Type dimstyle, d, dst, ddim • On dimension toolbar

  5. Creating Dimension Styles • Dimension Style manager • Create New Dim Style • Modify Dimension Style dialog box • Lines tab • Symbols and Arrows Tab – Figure 17-14 • Text Tab • Fit Tab • Primary Units Tab • Alternate Units Tab

  6. Making Your Own Dimension Style • Typically make dimension style(s) to suit school, company, or national standards • Figure 17-25 shows typical dimension settings for mechanical and architectural drawings

  7. Overriding Existing Dimension Style Settings • Select dimension, right click, choose properties

  8. Drawing Dimensions • Linear • Aligned • Angles

  9. Drawing Problems • 1 • 16 (2007) or 13 (2006)

  10. Quiz • 1. What is the difference between paper space and model space? • 2. Calculate the scale factors for drawings with the following scales: • ¼” = 1” • 1/8” = 1” • 3. Calculate the drawing limits for the following scales and sheet sizes: • 2” = 1” scale, 17 x 11 sheet size • 1” = 10’ scale, 36 x 24 sheet size

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