American Standard Autocad Drawings |LINK|
See the state links below for available standard drawings. Drawings are available in various formats including PDF (Acrobat), DGN (MicroStation Design File), DWG and DXF (AutoCAD Drawing), and other image types (TIF, DPR). Standard Drawings are not currently available for download from the shaded states.
American standard autocad drawings
Standard trail bridge plans for timber and prefabricated steel bridges have been approved by Forest Service Washington Office Director of Engineering and Washington Office Director of Recreation for use on National Forest System lands. The standard trail bridge plans are for typical superstructure designs and abutment details commonly used. The plans are not meant to be used as individual drawings. The designer should download all associated plans for the bridge type to ensure they have a complete trail bridge package.
This section does not include any standard drawings, but is reserved and used for the identification of specialty structures in project packages, such as tunnels, snow sheds, etc. Refer to Specifications Section 970 - Specialty Structures.
This section does not include any standard drawings, but includes material specifications used for work items included in project package. Examples include aggregate, rock, geosynthetics, material for timber structures, etc. Refer to Specifications Section 990 - Materials.
- [Instructor] Your location and the project are more than likely going to determine the sheet sizes that you and your firm will commonly use. There are two general categories for drawings, namely Metric and Imperial. Metric drawings are used in most of the world and most use Metric measurements and conventional paper sizes to determine their sheet sizes. On my screen we can see graphic of different standard paper sizes. The green sizes along the top, are ISO or Metric standards. The other category for paper sizes is Imperial, and they use feet and inches in their drawings along with the appropriate paper sizes in inches. There are actually two standards for Imperial drawings, ANSI or the American National Standards Institute, and ARCH or Architectural. ANSI shown here in red, use paper sizes labeled A through E as those the architectural standard sizes, even though they are slightly different. ANSI A is also commonly called Letter size paper and ANSI B is also called Ledger or Tabloid paper. Much of the world uses Metric paper sizes, while North America and some other countries use Imperial. I happened to be here in the U.S as I'm recording this, so I will be using the North American standard sizes and mostly referring to feet in inches in this course. If you were going to be using Metric, you can substitute millimeters for the inch measurements that I give and use standard Metric page sizes without much issue. Again, we want to focus on the methods and workflows, and not get bogged down in the semantics if we can help it. We can see when comparing the sizes in the very top graphic, most of the sizes are fairly close to each other, with just some minor differences. The title block that we are going to create later in this course, will be drawn on 11 by 17 inch paper or ANSI B. Even though most large scale architectural plans in the U.S, are drawn on ARCH D or 36 by 24 inch paper, I also find most architects actually use ANSI B or eleven by 17 paper over ARCH B, which is 18 by 12 inches. Now don't ask me why, it just seems to be the standard. That said, as we draw our title block on ANSI B paper in inches, if you prefer to use Metric you can use the similar A3 sized paper and use the appropriate millimeter dimensions. These sheet sizes not only concern us as we create our borders and title blocks, but also when it comes to printing. Both in what we setup as our page setups, which are the printing defaults, but also what physical size paper our printer will print to. For the ease of this course when I print I'm going to focus on virtual printers that are installed when we install AutoCAD for Mac, namely the AutoCAD PDF printer. A virtual printer is a software only printer, that only creates digital files in this case PDF files, rather than a physical printer that actually sits on your desk. The nice thing about using the PDF virtual printer, is that it supports any paper size, since there is no physical paper anyway and it is the same for everyone using AutoCAD for Mac. So your settings for the printer should match mine. I also have open an example of an American drawing template. In this case, using a 36 by 24 inch piece of paper, along the right side of the title block, we can see the actual title block itself. And then there's a border around the page to help contain and define the drawing area. In the middle of the screen, is where we will be placing our views, which we will do using view ports. We'll draw our actual drawing objects here in model space at full scale. Then we'll use the view ports to scale our drawings, so that they fit on the printed page. If you're working on a Metric project, you will of course draw in Metric at full scale, then use Metric sheet sizes and then view ports scaled using Metric scales like one to 50 or one to 100 to display your design. If you were designing a project in the U.S, you will draw in feet and inches. Again, drawing at full scale or actual size and then choose a sheet size like 36 by 24, and then create view ports with scales like quarter inch equals a foot or half inch equals a foot. So we can see that the concepts themselves are the same. Just the nomenclature is a little different.
Conventions are essential for clear, unambiguous written, oral, and graphical communication. Drawings are used by engineers and manufacturing technologists to communicate their ideas and hence good engineering drawings follow conventions which are referred to as drawing standards. The American National Standards Engineering Drawing and Related Documentation Practices (ASME Y14/ANSI Y14) contains the most widely accepted set of engineering drawing standards in the United States. In addition, an individual company may have its own standards which supercede ASME Y14 to define conventions used by that company.A set of working drawings is a set of drawings which contain all the information needed to manufacture a product. It includes information needed to fabricate each part, specify all standard components, and assemble the parts and standard components into the product.The Department of Mechanical and Mechatronic Engineering and Sustainable Manufacturing has a set of standards for construction of working drawings. The guidelines in the Department Standards for Working Drawings (PDF) take precedence over those in ASME Y14. Documentation practices in ASME Y14 shall be followed if those practices are not addressed in the Department Standards for Working Drawings.