Introduction: It is inevitable to take over a brand-new project in a hurry. I rummaged through the archives of the unit and didn't find what I wanted. Internet is undoubtedly the best place to go. CAD is a double-edged sword, and it is good at making use of its advantages. This is a paper on the pros and cons of CAD published when I entered the engineer. It's ugly now.

Keywords: computer-aided design

CAD (Computer Aided Design) is no stranger to engineers in architectural design industry. Since 1980s, it has been used in some research institutes in China. However, due to the limitation of hardware performance and price and the defects of CAD software, people still can't completely get rid of hand-drawn drawings. By the end of 1990s, due to the improvement and perfection of software and hardware performance, as well as the outstanding advantages of CAD technology, CAD was rapidly popularized throughout the country, which greatly promoted the development of China's architectural design industry. However, with people's familiarity with CAD technology, some of its shortcomings are also exposed, so many people do not accept this technology, thinking that it limits the development of architectural design industry. So whether CAD has more advantages than disadvantages or disadvantages than advantages, and how to make good use of it, we might as well make an analysis of the duality of CAD.

Advantages of CAD technology

There is no doubt that the advantages of CAD technology make people flock to it. It has the following advantages.

First, the labor intensity is reduced and the drawing is clean.

When drawing by hand, the staff often hold several ink pens with different thicknesses, and tools such as T-square, triangle and curve board are constantly changing in their hands. Moreover, once the drawings are wrong, it is very troublesome to modify them, or even to start from scratch, and the drawings are messy. Drawing with CAD, you can do anything you want with the mouse. It has a unified linear library and font library, and the drawing is neat and unified. The undo function provided by CAD software allows you to go back to the previous steps without worrying about drawing mistakes. You can also run some music playing software in the background of the computer system and work while listening to music.

CAD software drawing is really convenient, neat, clean and easy.

Second, the efficiency of design work and the reuse of design results.

CAD is efficient because of one of its greatest functions: "copy". For some similar and similar engineering designs, you can simply modify the drawings or apply them directly. You only need to press the keyboard and mouse a few times. CAD software can directly convert building construction drawings into equipment drawings, so that designers of water heating and electricity will not waste time drawing equipment drawings. Moreover, most of the popular CAD software now provides a wealth of classified galleries and general details, which can be directly transferred by designers when needed. The more repetitive the work, the more obvious this advantage is. The efficiency of structural calculation, an ordinary frame structure, used to take about a week for manual calculation and can be completed in one day with CAD.

Third, the accuracy is improved.

The accuracy of architectural design is generally marked to millimeters, and the structural calculation accuracy is not very high, and the construction accuracy is even lower. But for some special or large complex buildings, the difficulty will increase exponentially without CAD. The calculation accuracy and speed of CAD in sun shadow analysis, indoor sound field analysis and lighting illumination analysis are also incomparable by manual calculation. & lta href = ""> structure