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.
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.
manual data input is cheap
disadvantages in data manual processing
Technical drawings must be done with accuracy and must be easy to be understood. This can be done through manual sketching, through an instrument or even with the use of computer-aided drawing systems.
Historically, abbreviations were used frequently in construction documents as part of standard practice. They were part of the drawing symbology, but led to errors of interpretation by contractors. Since today, CADD drawing text is fast to input and is legible, abbreviations are strictly prohibited unless they are absolutely necessary due to space limitations, or they increase readability, such as in schedules.If you use abbreviations, you should follow these rules:Use upper case lettering, without periodsDo not use spaces within an abbreviationUse same abbreviations for singular or pluralThe abbreviations listed below are compiled from Architectural Graphic Standards, 1912, 1951, and 1956, Time Saver Standards, 1966, Skidmore, Owings and Merrill Drafting Standards, 1986, Holabird & Root Drafting Standards, 1987, Nagle Hartray & Associates Standards, 1989, Murphy/Jahn Office Reference Manual, 1973, Braun/Skiba Standards Manual, 1990, Recommended Standards on Production Procedures (the so-called "POP Manual"), Northern California Chapter AIA, 1980, Graphic Communication in Architecture, William J. O'Connell, 1972, Interior Graphic and Design Standards, S.C. Reznikoff, 1986. Note that there are many differences between abbreviation standards between firms as well as between authors.
Vocational science is science education that prepares students for this specific line of work. It is based on manual and practical activities related to specific areas of science.
im not telling you
Manual Drawings are hand drawn, with the help of drawing instruments like pencil, T-scale, set squares, etc. For manual drawings, a drafting table is compulsory to get a precised drawing.
Thomas Ewing French has written: 'A manual of engineering drawing' -- subject(s): Mechanical drawing 'The essentials of lettering' -- subject(s): Accessible book, Alphabet, Alphabets, Lettering, Monograms 'Engineering drawing and graphic technology' -- subject(s): Engineering graphics, Mechanical drawing 'Agricultural drawing and the design of farm structures' -- subject(s): Architectural drawing, Domestic Architecture, Farm buildings 'Graphic science' -- subject(s): Descriptive Geometry, Graphic methods, Mechanical drawing 'Fundamentals of engineering drawing' -- subject(s): Mechanical drawing
noting advantages
Jerome H. Lieblich has written: 'Drawing Requirements Manual (10th ed) (DRM)' 'Drawing Requirements Manual/Editorally Updated'
Here i say. What do we have here. The drawing is drawn i see. The cad is new. What does that mean. Could it be, that i am afraid to see. How about that. Cad is better than drawing but drawing is better than cad. You see, if you draw then you draw, if you cad then its cad. No need for skills just the computer mind is you. But you are not you unless you draw it by you. So is it really you. Solely down to you. No denying.
cost and thats about it
With manual accounting, you don't have to worry about making mistakes.
I added a related link to an article I wrote entitled "Why Use A Manual Register?". This is assuming that the question is about manual registers for tracking financial transactions. I myself was surprised to discover that manual registers had certain advantages over personal finance software. My article does not propose that manual registers can replace such software, but they can solve areas in which the software is lacking (which are described in full in the article), and thus serve to enhance the overall, otherwise digital, accounting process of managing your personal finances.
Yes, when I started my drawing class, I didn't really like to draw by hand that much and on top of that, I spent my last two years of highschool in an architectural and engineering design course at a technical high school. My drawing professor had to beat all those perfectly straight lines out of me, but it was worth it and I passed. I started out with a self portrait that was horrible, but was able to finish the quarter being able to draw decent portraits.
non
it is easy to carry every where. it is cheaper. it do not consume electricity.