In this video, author Shaun Bryant demonstrates how to use dimensions in an AutoCAD drawing.
- [Speaker] Another thing you can when you're annotating your drawings is add dimensions. So we're staying in our Annotating_HOUSE.dwg file and as per the previous video, you can still see the text that we placed in previous video. So I'm going to zoom out a bit now and I'm going to pan and I'm going to look at this top left part of the house where you can see the windows there on the corner of the building. What I'm going to do is in the Layers panel, I'm going to click on the Layer dropdown here and start using the Dimensions layer to make sure that we're using the right layer for the right objects in the drawing.
In the Home tab on the riven, I'm going to go to the Annotation panel and click on the flyer again and I'm going to make sure that I'm using the Architectural dimension style. Now there are a number of them there, make sure you use Architectural, that's the one I'd like you to use for this particular video. Now you can see there I had a little blue symbol next to it, that means it's an annotative dimension style. Now you would normally make your dimensions annotative and what that allows you to do is to jump into something like the Layout tab D-sized here and what you can do is you can specify a scale that corresponds to the viewport.
So if I click on this viewport here and look at the status bar, it's at 1:50. So what I can is hit escape now and deselect that and go back to the Model tab and change my Annotation scale here to 1:50. That means that any annotative dimensions that I place will adhere to that 1:50 scaling both in the Model space and in the Layout tab and it just maintains consistency of the size of the text, size of the arrowheads and so on. So we've got the Dimensions Layer set, we've got the Dimension Style set and we've got the Annotation Scale set.
Now I can place dimensions from the Home tab on the riven in the Annotation panel. There's my dimensions there like so. I can also if I want to go to the Annotate tab and there's my dimensions there. So I'm going to place a couple of linear dimensions. So I'll click on Linear, make sure your object snaps are on and I'm going to zoom in tight now on these window frames because I want to dimension the actual window opening so that's the orange corners, one and two there and as I drag that out, you could see it's a two foot six space that fills that particular window frame.
So if I do another one now, do another Linear dimension, and I'll go for the next window opening which is just there, orange to orange remember, and you can see that that is also two foot six. If I hover here though on that endpoint snap there on the previous dimension, it lines them up nice and neatly. Now bear in mind I've also got angles and things in this particular drawing. So what I could do now is measure some angles as well so I might put a different dimension in such as an Angular Dimension and what I might do there is use this line and this line and drag that out and say that that's 90 degrees for example, which is pretty obvious, it's a corner of a room and it should be at 90 degrees but you can see what I mean there.
Now what I could do is specify the radius of that fireplace so I could use a Radius dimension as well, so I'll come in here and I'll specify that radius of the outer arch, I can take that out like that or I can bring it out this way like so and I can place that radius wherever I want it to go. So I would probably do something like that, so it's a radius of six foot eight for example there. So you can see how dimensions can be placed very quickly and very easily in your AutoCAD drawings. What you need is a dimension style, a dimension layer, and also don't forget as well, that you need to make sure to check whether it's annotative or non-annotative.
If it is annotative, you need to make sure that your annotation scale is set when you're working in the model space like so. So as you can see, placing dimensions, not too difficult to place. Just make sure you got the right settings first.
Note: The exam objectives are not release specific, but the course has been revised to reflect the most recent version of the software, AutoCAD 2018.
- What is AutoCAD certification?
- Drawing shapes and lines
- Creating isometric drawings
- Modifying objects
- Creating and using arrays
- Working with polylines and splines
- Organizing objects and layers
- Reusing content with blocks
- Annotating drawings with text, dimensions, multileaders, and tables
- Creating layouts
- Setting printing and plotting options