In this video, Shaun Bryant explains metric drawing sizes and how they work within AutoCAD drawings.
- [Tutor] We're starting another chapter now in our AutoCAD Construction Drawings course and what we're going to look at is drawing sizes available to you in AutoCAD, now that does depend on what part of the world you're in, for example, if you're in the USA, you would be using imperial drawing sizes, measured in feet and inches, if you were in the UK, like I am, you would use metric drawing sizes, measured primarily in millimeters, so I've got some drawings in the Exercise Files for you, you can download them from the website as usual to follow along with the videos.
The drawing I've got open right now is a metric title block, so the whole DWG file is metric and it's actually using a metric drawing size called ISO A1, which is 841 by 594 millimeters in size, now I know that, because obviously my Layout tab is telling me that it's an ISO A1 and it plots to DWF, now we're going to kind of go into this as we work through the course, but the whole idea of AutoCAD, when you're setting up these drawing sizes is you set them up in the Layout tab, using a thing called Page Setups, so if I just right-click now on the drawing tab here, the Layout tab and go into Page Setup Manager, you'll notice there's my ISO A1 DWF Page setup, now I'll go into Page setups and how to set them up later, but if I just modify this real quick, it takes me into the Page setup dialog box and you can see I'm using an ISO A1, which as I said, 841 by 594 millimeters, but there are lots of different drawing sizes available, now your metric drawing sizes, if you're going to use them are listed in what they call the PC3 file, your printer configuration file, so it all depends on what your printer can cope with and what it can plot to, so you might only have an A4, for example, which is very small, if I come up here, you'll see A4 is only 297 by 210 millimeters, so if I've got an A4 printer, I can only print to that size, but if I'm using ISO A1, which is what this actual sheet is set to, you can see that my printer, if I want to print a physical sheet has to be much, much bigger, so that's the whole idea of these drawing sizes, so let me just come out of that, I'll just cancel that dialog and I'll close the Page Setup Manager.
Why do we have these different metric drawing sizes? Well, the whole idea is this great big space here allows us to place what is called viewports, so when we're working in the Model tab, which right now is obviously empty, I can draw something in the Model tab, that is full size, it's real size, so imagine in the Model tab now, I'm drawing something like let's say a football stadium, now when I say football, that's soccer in the UK, it's American football in America obviously, different games, but they both use football stadiums, right, so I'm drawing a great big football stadium and I'm using a metric drawing size, so everything will be in millimeters, so imagine how big that will be in the model space, one to one real size, I then go to my ISO A1 tab here and that's only 841 by 594 millimeters, how do I fit that stadium on to that sheet? Well, the trick is you create a viewport, so you'll notice when you go into the Layout tabs in AutoCAD, you've got the Layout tab on the ribbon, just to add confusion, Layout tab's bottom left and Layout tab on the ribbon, so if I go into Layout, you can see that I can set up Layout Viewports, so if I wanted to create a rectangular viewport, I'd click there and I'd pick a space like that and as you can see, there's my viewport there and as you can see, you can now see the grid, that is currently switched on in the Model tab, if I go back into the Model tab, you'll see that my grid is on, you can see it's switched on down here on the Status bar, so you can see there that that viewport is basically a hole in my sheet looking through into the model and that's why I use these different drawing sizes, because I want to show things of different sizes, of different scales on the sheet, so the bigger the sheet, obviously the drawing size, it allows me to put more information on that sheet and communicate my design intent, so I'll just delete that viewport now and just lose that, just hit the Delete key there, but you get the idea, so with a metric size, you're using your millimeters, your meters and so on and obviously you're developing everything to metric scale as well, such as one to 50, one to 100 and so on, so that's why you use your metric drawing sizes, when you're working on a metric unit project.
- Communicating your design intent
- Drawing sizes in AutoCAD
- Deciding on the appropriate drawing size
- Using page setups to maintain drawing size
- Developing a suitable title block
- Setting up your layers to industry standards
- Creating plans and elevations
- Developing sections in the Model tab
- Setting up viewports and scales
- Creating standard layouts
- Printing out layouts