Dimensioning Part I

Professor: Dr. Miguel Alonso Jr.

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

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

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

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

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

Overriding Existing Dimension Style Settings

Select dimension, right click, choose properties

Drawing Dimensions

Linear Aligned Angles

Drawing Problems

1 16 (2007) or 13 (2006)

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