Monday, September 3, 2012

Monday, August 27, 2012

The Modern Drawing (CAD) 2012


A Library Paper by:
Ortega, Chrislene F.
Codilan, Avegil S.
Noval, Darlene C.
Rosani, Aprilyn A.

          Modern Drawing also known as Computer-Aided Design (CAD) or Computer-Aided Design and Drafting (CADD) is the use of computer systems to assists in the creation, modification, analysis, and optimization of a design. CAD output is often in the form of electronic files for print or machining operations. As in the manual drafting of technical and engineering drawings, the output of CAD must convey information, such as materials, processes, dimensions, and tolerances according to application-specific conventions.

          CAD programs provides precise dimensioning and positioning of the elements being drawn. It is also used to produce computer animation for special effects in movies, advertising and technical manuals. Because of its enormous economic importance, CAD has been a major driving force for research in computational geometry, computer graphics, and discrete differential geometry. It is used to increase the productivity of the designer or architect, improve the quality of design, improve communication through documentation and to create database for manufacturing.
          In the new millinneum, CAD System is widely use to create designs not only on structures of building but of many others. Engineers and architects are the main beneficiaries of the CAD System. It helps them to work more faster in matters of designing and planning. It also helps them make and group all the ideas of the mind into a beautiful work of art.

Uses of Computer-Aided Design (CAD)

          CAD is a useful tool for engineers and architects. For people working in the designing industry, Computer-Aided Design (CAD) is a techique that makes the work easy and handy.  There are many essential/significant uses of CAD in the community. Below are some of the uses of CAD:
·         photorealistic rendering;
·         creation of photo simulation;
·         computer animation for special effects in movies, advertising and technical manuals;
·         computer graphics
·         designing curves, figures, surfaces and solids in two-dimensional (2D) space and three-dimensional (3D) space.

Advantages and Disadvantages of CAD

          Advantages and disadvantages are common properties of any material, tool, object and etc. With the many uses of CAD (Computer-Aided Design) in the society not only in the designing industry, advantages and disadvantages are always present in any form. Below, on Table 1, are some of the advantages and disadvantages in using the CAD System:

Table 1. Advantages and Disadvantages in using CAD
·         No need for scaling. All drawing is done full-size;
·         If computer problem will occur, all data will be lost;
·         The screen drawing can be set to any size with a click of a button;
·         If not checked properly, the object created can go very wrong;
·         All tools needed are supplied by the program;
·         Can be very expensive;
·         Absolute accuracy can be maintained;
·         Can be hard to do and handling needs training;
·         Production details can be extracted directly from the drawing;
·         Since not manual, its very hard to insure exactly what is wanted by the designer;
·         Eliminates the need for full-size set outs;
·         Sometimes,  you can't do everything you want to because the tools aren't available.
·         Your work is copied and stored off the computer for security, you may never lose your work again!;

·         Drawings are stored on stick rather than in a bulky folder;

·         Dimensioning is almost automatic.

(Table 1. On the above table, there are more advantages than the disadvantages in using the CAD System. In this condition, we could conclude that using CAD could be a helpful tool for studying, designing and planning.)
Benefits in using CAD (Computer-Aided Design)

          CAD is useful to people. It also brings advantages and disadvantages to people and with the environment. Who would be the possible beneficiary of CAD System? What would be its benefits to people? environment? community? These are questions that emphasize the importance of CAD and its benefits. Below are the benefits in using the CAD System:

         Save time and money and reduce errors with the dynamic engineering model.
         Reduce purchase, deployment, and support costs with one complete solution.
         Increase value to client by delivering more design alternatives in less time.
         Take full advantage of existing AutoCAD skills to get up to speed quickly.
         Create production sheets faster.
         Be sure that production drafting is always in sync with your design.
         Complete projects faster and reduce the chance of coordination errors using the Civil 3D project environment.
         Exploit data compatibility.
         Build a foundation for your custom solution.
         Clearly communicate design intent and complete final proposals with realistic 3D rendering.


          With the uses of the CAD, we could conclude that it supports the needs of designers in designing. Photorealistic rendering, creation of photo simulation, computer animation for special effects in movies, advertising and technical manuals, computer graphics, designing curves, figures, surfaces and solids in two-dimensional (2D) space and three-dimensional (3D) space, these are some of the uses of the CAD System that supports the basic needs in designing. It can be an exchange tool in designing and planning because it uses computer programs to create a design or plan, so, it mainly shows that manual drawing using the instruments is on the outside diameter. However, its advantages and disadvantages also inhibits the possible benefits and consequences in using the modern drawing (CAD). Furthermore, in the above data showed, we can identify that the CAD System is a useful tool because it gives more advantages than its disadvantages.

          CAD System has its best ways of making the foundation of designing industry tough and durable. It supports the need of designers, engineers, and architects to develop their designing skills more enough. CAD (Computer-Aided Design) has comletely change the drafting business and made the storage and the retrieval of projects much easier. Hovever, manual drawing is still important and provides the basics in learning drawing. The goal of automated CAD Systems is to increase efficiency; they are not necessarily the best way to allow newcomers to understand the geometrical principles of Solid Modeling, but still, it is a good technique in designing and planning structures or figures.



·         ( Vijay Dugal, “CAD Primer”, Mailmax Publishing. )
·         ( Narayan K. Lalit (2008). “Computer-Aided Design and Manufacturing”. New Delhi: Prentice Hall of India. pp.3 – 4. )
·         Madsen, David A. (2012). “Engineering Drawing and Design”. Clifton Park, New York: Delmar. pp. 10. )


·         www.
·         www. wannax/computer-aideddesign.22596/sfg.8580/