What are the advantages of the cad drawing system over the manual drawing board system related to architectural work?

Answer 1

CAD has many advantages over drawings, but drawings are still very important.
With CAD it is easy to make changes quickly as the design progresses. You can see in a 3D environment what the part will look like more easily. The model information can be sent to a CAM application or to vendors. You can get mass analysis information with a 3D Solid package. You can, depending on what package you use, put into the model Programming, that will ask for input information and get an updated model based on what you input. Again, depending on the CAD package you are using, you can make multiple parts in the generic part, and get different sizes of a similar part.
You can get drawings from the CAD model, and if changes are made the drawing(s) will update accordingly.

Answer 2

Although i am not well versed in CAD systems, i do use them occasionally and i will tell you what i know. First off, CAD systems are more precise and uniform. In precision, all of the CAD drawings are based off of units inputted into the program which are down to a very low number in terms of precision. In terms of uniformity, computers do a much better job of graphing lines, curves, and geometrical shapes than we do. Just as people swim in varying styles, architechts- when they hand draw- draw in varying styles. CAD drawings are in almost every case, cleaner and cheaper as well. When everything is digitized, there is no need to buy, store, and transport large amounts of paper. Though there is an initial cost in buying most CAD programs, Architechts must buy drawing materials to manually draw which include precision rulers, triangles, T-squares, and as aforementioned- high quality, large sized paper. CAD programs are also more efficient as architechts can most often create drawings on the computer faster than they can on paper, also lowering cost.