Designs can be shared and collaborated on in real time, greatly decreasing the overall time needed to complete a drawing. Calculations are performed by the computer, making it much easier to test the viability of designs. CAD drawings are not limited to the 2D space of a piece of paper, and can be viewed from many different angles to ensure proper fit and design. Designs can be created and edited in much less time, as well as saved for future use. Calculations, such as the structural load on a building component, would need to be done manually by an engineer or designer, a very time consuming - and error prone - process.ĬAD software changed all of this. Every object, line or curve needed to be drawn by hand using rulers, protractors and other drafting tools. Prior to the advent of computer aided design, designs needed to be manually drawn using pencil and paper.
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