AutoCAD is a CADD(Computer Aided Design & Drafting)

software application for Version 2014 for Windows 7

Layla Kaissy

Humber College

2013/2014

ARCHITECTURAL CADD 1ARC 733

FUNDAMENTALS OF AUTOCAD

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LAYLA AL KAISSY

HUMBER COLLEGE

FALL 2015

An ACCRONYM for Computer Aided Design & Drafting.

ACKNOLEDGEMENT

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Much of the material have been sourced from :AutoCAD Bible 2013 Author: Ellen Finkelstein Learning AutoCAD 2010, Volume 1 & 2 by Autodesk AutoCAD for Interior Designers by AutodeskAutoCAD Services & Support ,2011http://www.dreamstime.com/

3After completing this lecture you will be

able to:

Define and save dimension styles

correctly based on architectural

drafting standards and intended plot

scale.

DIMENSIONS Learning Objectives

Dimensions Lecture Outline

1. Dimension

2. Dimension Styles

3. Editing Dimensions

Dimensions- General

Dimensions are used on drawings to interpret the size and specifications.

Dimensions indicate the measurements of the created models.

Dimensions and texts are usually added after completing the drawing.

Furniture Stencil

scale 1:50

Daniel Libeskind Design of Toronto

Museum AutoCAD drawings

Dimensions OptionsBefore dimensioning any object in the drawing, we have to decide what option is appropriate.

AutoCAD provides many dimensioning options, according to different kinds of geometry.

Linear Dimensions horizontal or vertical elements

Aligned Dimensions angled elements

Angle Specifies angle

Continue dimension Creates a string of dimensions

Baseline Provides overall dimensions

Radius Dimensions radii of arcs, circles and ellipses

Diameter Dimensions diameters of arcs, circles and ellipses

Center mark Provides a mark signifying the center of an arc, circle and

ellipse

Creating Dimensions Dimensions are a very important element of Annotation.

They show the measurements and illustrate how your drawings meet the specifications.

We will learn how to :

Create different types of dimensions on linear objects. Create different types of dimensions on curved objects. Enhance dimensions for clarity of purpose.

Creating Dimensions on Linear ObjectsLinear DimensionCommand Access

Command line: DIMLINEAR, DIMLINMenu Bar: Dimension > LinearRibbon: Annotate tab > Dimensions panel > Linear

Command Options (Sub-Prompt)

Specify first extension line origin or < select object> Select one end of the line to be dimensioned. Use Osnap for precision. OR Hit the ENTER, and select the line to be dimensioned Specify the second extension line origin by Picking the other end of the line to be

dimensioned. Use Osnap for precision.

Specify dimension line location OR (Mtext/ Text/ Angle/Horizontal/Vertical/Rotated )

Dimension Styles It is very important to understand how to create and modify dimension styles .

How to create and format and dimension styles to easily manage dimensions.

Definition: Dimension style is a group of dimension settings or variables that

control how dimension appear. You can use more that one dimension style in

a drawing.

Command Access

Command line: DIMSTYLEMenu Bar: Format > Dimension StyleRibbon: Annotate tab > Dimensions panel > Dimension Style

Dimension Style Manager

The Dimension Style Manager displays all the dimension styles available in the

drawing, in addition you can use all option in the dim. style manager to

Create a new dimension styles Modify an existing style. Override a style Compare styles Set a style current.

Object line

4500

Dimension Text

Extension line

Dimension line

Arrow head

A gap that separate

extension line from

object- line

PARTS OF DIMENSIONS

Two important characteristics of Dimensions:

Dimensions are blocks: Blocks are group of objects that is working as one object

Dimensions are associative: Association connects Dimensions and objects. If you change the object sixe , dimensions changes

automatically

Dimensions Preparation:

Create a layer for your dimensions. Choose a contrast color.

You may create a special dimension layer that you may freeze/thaw or on /off... For example DIMN-ELEC

Set your height in the text style to zero, will allow you to set text height according to your needs. If you specify a fixed height in

text style, that height will overrides any height that you specify.

TIPS

Dimension Style Manager

New Dimension Style Dialog Box

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New Dimension Style Dialog Box

1. Select New from the Dimension Style Manager

2. Enter a new style name based on an existing dimension style that you choose from list

3. A new dimension style is typically used for all dimension

4. Check Annotative 6 to make all dimensions appear in consistent size when you have multiple viewports in the drawing layout.

5. Select Modify to access the same Dimension Style Options

Dimension Style Options

New Dimension Style Dialog Box

Lines Tab: Use this tab to adjust properties for the dimension and extension lines.

Symbols and Arrows: Use this tab to adjust the arrowheads, etc.

Text : Use this tab to adjust the text appearance, text placement, and the text alignment options

Primary Units Tab: Use this tab to set options for the primary units displayed on the dimensions, the primary units are always displayed and

they reflect the current drawing units setting.

Alternate Units Tab: Use this tab to show two measurement units, metric and Imperial.

Tolerances Tab: Use this tab to add tolerances to your dimensions. By adding tolerances to your dimensions, you are setting a valid range in

which that as-built measurement of the feature must be maintained in

order to ensure functionality.

Dimension Style Guidelines

Dimension styles controls the appearance of dimension features. Dimension style options are based on general drafting standards. Only one dimension style can be current at a time. If you modify a dimension style, all dimensions using that style in

the drawing update automatically.

To set current or rename or delete a dimension style, select the name in the Dimension Style Manager, and right click to access these options.

You cannot delete a dimension style if it is current. The quickest way to make a new dimension style current is to

select it from the list in the Dimensions panel.

A new drawing based on the ACAD dwg. template will contain a Standard style and an Annotative style.

The Annotative dim. Style will display dimensions that are equal in size regardless of the viewport scale in the drawing Layout.

For non-annotative dimensions, you must set dimension scale equal to your plot scale.

Editing Dimensions

There are a variety of ways to edit dimensions depending on what kind of

editing you need to do. You can:

1. Reposition dimensions using grips

2. Edit dimension features that override the dimension style

3. Change dimensions from one style to another

4. Edit the dimension text

5. Edit dimensions using grips

6. Dimedit commands.

Command AccessDimension Edit - Edit text

Command Line: DDEDIT

Pointing Device: Double click a text object.

1. You can use a Dimedit ( DDEDIT ) command to edit or override the dimension text measurement.

2. You can use a Dimtedit command to edit the position of the dimension text.

3. You can also right-click a selected dimension to access the Quick Properties or the Properties Palette where you can edit any dimension style features for the selected dimension.

Questions

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