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Creating general dimensions

From: AutoCAD 2011 Essential Training

Video: Creating general dimensions

It's important to remember that the drawings we create in AutoCAD are construction drawings. This means that someone somewhere will be referring to our drawing to construct our design. Knowing this we need to be certain that our design is well-dimensioned. In this lesson, we're going to learn how to add dimensions to a drawing. On my screen I have a mechanical example, and before I create my first dimension take a look at the Layer control. Notice I am practice in good form. I have created a layer for dimensions and I have set that layer current. In fact, I'm going to open up the layer control and let's take a look at the layers in this drawing.

Creating general dimensions

It's important to remember that the drawings we create in AutoCAD are construction drawings. This means that someone somewhere will be referring to our drawing to construct our design. Knowing this we need to be certain that our design is well-dimensioned. In this lesson, we're going to learn how to add dimensions to a drawing. On my screen I have a mechanical example, and before I create my first dimension take a look at the Layer control. Notice I am practice in good form. I have created a layer for dimensions and I have set that layer current. In fact, I'm going to open up the layer control and let's take a look at the layers in this drawing.

I have my default layer 0, I have a layer for my center lines, one for the dimensions, and one for the part. Now the dimensioning tools are located in the Annotation panel. The flyout is right here. I'm going to start off by creating a Linear dimension. Let's say I would like to create a dimension from the end point here to the end point here. I will then pull this up and click to place my dimension. Be sure to use object snaps whenever you are creating dimensions. It's the only way to ensure the dimensions are accurate. Let's create another Linear dimension.

Since Linear was the last choice, I can relaunch the command by clicking this icon. It will then create a dimension from the endpoint here to the endpoint here. A Linear dimension will give us the Horizontal or Vertical distance between the points we select. It just depends on which way you pull your cursor. I'd like a Horizontal distance. So I will pull this up and place it to the endpoint of this arrowhead. Let's create one more. I'm going to create a vertical measurement this time. I'm going to press the Spacebar to relaunch the command and I'll create a dimension from the endpoint to the center of this arc.

Now that I've created some dimensions, let's take another look at the layer control. Notice there is a new layer here called Defpoints. AutoCAD created this layer as soon as I placed my first dimension. If I zoom in on a dimension, notice there is a small pixel right here that identifies the point that's being dimensioned. This is called a Definition Point and AutoCAD uses this to maintain the accuracy and location of our dimensions. Now these pixels won't plot. They are on layer Defpoints and Defpoints is a non-plottable layer. The only reason I mention this is in the event you open up your layer control and wonder where this Defpoints layer came from.

I'm going to zoom out and let's create another dimension. I'll open up the flyout and this time I'll select Aligned. Aligned gives us the true distance between two points. I'll select the endpoint here and the endpoint here and I'll pull this out. I'll then press the Spacebar to relaunch the command and I'll dimension from the endpoint here to the endpoint here and I'll pull this out to the endpoint of this arrowhead. Unless you require a horizontal or vertical measurement, the Aligned dimension is the one that you will probably use most often.

Alright, let's create an angular dimension. I'm going to reopen the menu and I'll select Angular. To create an Angular dimension, all I've to do is select two lines. I'll select this one and this one and I'll pull my dimension out to here. I'm going to do one more. I'll relaunch the command and I'll select this line and this one, and let me zoom in a little bit. Before I place this, notice if I pull to the outside, I can dimension the opposite angle or if I pull to the left or right, I can dimension the supplementary angles.

Let's create a radial dimension. I'll go back to the menu and select Radius. Now I can select the arc or circle I'd like to dimension. I'll select this one and I'll pull my dimension out to here. Let's do one more. I'll relaunch the command and I'll dimension this small fillet right down here. We can also dimension the diameter of an arc or a circle. I'll select diameter from the menu and let's dimension this large circle.

I'll pull this down and place my dimension here. Notice that AutoCAD's adds the Diameter symbols for me automatically. Using AutoCAD's dimensioning tools along with our object snaps, we can quickly and easily document our drawing and allow a contractor to accurately reproduce our design.

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This video is part of

Image for AutoCAD 2011 Essential Training
AutoCAD 2011 Essential Training

100 video lessons · 20207 viewers

Jeff Bartels
Author

 
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  1. 2m 8s
    1. Welcome
      1m 29s
    2. Using the exercise files
      39s
  2. 23m 33s
    1. Understanding model space
      3m 44s
    2. Accessing AutoCAD's tools
      3m 2s
    3. Leveraging dockable palettes
      3m 1s
    4. Monitoring the Status bar
      1m 28s
    5. Understanding the anatomy of a command
      2m 14s
    6. Customizing AutoCAD's preferences
      3m 13s
    7. Accessing help
      3m 38s
    8. Saving a workspace
      3m 13s
  3. 19m 42s
    1. Opening an AutoCAD drawing
      3m 2s
    2. Understanding mouse functions
      2m 44s
    3. Zooming, panning, and regenning
      4m 24s
    4. Working in a multiple-document environment
      2m 39s
    5. Saving your work
      2m 29s
    6. Saving time with templates
      4m 24s
  4. 14m 35s
    1. Constructing lines
      2m 20s
    2. Locking angles with the Ortho and Polar modes
      4m 49s
    3. Drawing circles
      4m 10s
    4. Activating the Heads-Up Display
      3m 16s
  5. 14m 48s
    1. Defining a unit of measure
      6m 28s
    2. Constructing geometry using architectural measurements
      4m 6s
    3. Working with metric units
      4m 14s
  6. 23m 45s
    1. Understanding the Cartesian coordinate system
      4m 53s
    2. Locking to geometry using object snaps
      7m 42s
    3. Automating object snap selection
      7m 26s
    4. Using temporary tracking to find points in space
      3m 44s
  7. 19m 30s
    1. Drawing rectangles
      4m 56s
    2. Drawing polygons
      3m 4s
    3. Creating an ellipse
      5m 9s
    4. Organizing with hatch patterns
      6m 21s
  8. 29m 46s
    1. Making geometric changes using the property changer
      3m 38s
    2. Moving and copying elements
      4m 28s
    3. Rotating elements
      3m 48s
    4. Trimming and extending geometry
      5m 10s
    5. Creating offsets
      6m 16s
    6. Erasing elements
      2m 46s
    7. Undoing and redoing actions
      3m 40s
  9. 11m 52s
    1. Selecting objects using windows
      3m 46s
    2. Adding and removing from selections
      3m 43s
    3. Using keyboard shortcuts
      4m 23s
  10. 51m 12s
    1. Creating fillets
      3m 52s
    2. Creating chamfers
      3m 51s
    3. Copying objects into a rotated pattern
      4m 20s
    4. Copying objects into a rectangular pattern
      4m 58s
    5. Stretching elements
      4m 4s
    6. Creating mirrored copies
      2m 12s
    7. Scaling elements
      5m 0s
    8. Leveraging grips
      7m 20s
    9. Exploding elements
      5m 47s
    10. Joining elements together
      3m 44s
    11. Editing hatch patterns
      6m 4s
  11. 32m 19s
    1. Understanding layers
      2m 43s
    2. Creating and adjusting layers
      7m 20s
    3. Using layers to organize a drawing
      9m 17s
    4. Changing popular settings using the layer control
      3m 30s
    5. Understanding the BYLAYER property
      3m 37s
    6. Restoring previous layer states
      3m 42s
    7. Using existing geometry to set the current layer
      2m 10s
  12. 37m 43s
    1. Creating single-line text
      3m 11s
    2. Justifying text
      5m 18s
    3. Controlling appearance using text styles
      6m 10s
    4. Annotating with multi-line text
      5m 10s
    5. Editing text
      4m 32s
    6. Creating bulleted and numbered lists
      3m 29s
    7. Incorporating symbols
      5m 28s
    8. Correcting spelling errors
      4m 25s
  13. 28m 37s
    1. Creating general dimensions
      4m 13s
    2. Creating continuous and baseline dimensions
      2m 13s
    3. Controlling appearance using dimension styles
      4m 57s
    4. Modifying dimensions
      6m 6s
    5. Creating multileaders
      2m 53s
    6. Controlling appearance using multileader styles
      3m 23s
    7. Modifying multileaders
      4m 52s
  14. 25m 19s
    1. Inserting blocks
      4m 34s
    2. Creating blocks
      6m 41s
    3. Leveraging blocks
      5m 39s
    4. Redefining blocks
      3m 1s
    5. Building a block library
      5m 24s
  15. 13m 50s
    1. Querying a drawing using rollover tooltips
      2m 9s
    2. Taking measurements using the Distance command
      3m 2s
    3. Modifying properties using the Quick Properties tool
      4m 25s
    4. Automating calculations using the Quick Calculator feature
      4m 14s
  16. 36m 6s
    1. Creating quick plots
      6m 4s
    2. Selecting a pen table
      5m 48s
    3. Choosing line weights
      4m 32s
    4. Creating a layout, pt. 1: Choosing a paper size
      2m 42s
    5. Creating a layout, pt. 2: Inserting a title block
      2m 29s
    6. Creating a layout, pt. 3: Cutting viewports
      6m 9s
    7. Reusing layouts
      4m 3s
    8. Organizing layouts
      4m 19s
  17. 16m 49s
    1. Using the Annotative property to automatically size text
      4m 13s
    2. Using the Annotative property to automatically size dimensions
      4m 34s
    3. Using the Annotative property to automatically size multileaders
      3m 58s
    4. Changing the scale assigned to annotations
      4m 4s
  18. 6m 56s
    1. Saving drawings to other formats
      2m 27s
    2. Plotting to the Design Web format
      2m 15s
    3. Plotting to PDF
      1m 20s
    4. Sending drawings via email
      54s
  19. 22s
    1. Goodbye
      22s

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