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Ch.1 Introduction to Graphics Communication . Importance of technical graphics Traditional engineering design & Changes in the engineering design process What you will learn the manual drafting portion of CE En 112 Technical drawing tools that you need ANSI standard sheet sizes
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Ch.1 Introduction to Graphics Communication • Importance of technical graphics • Traditional engineering design & Changes in the engineering design process • What you will learn the manual drafting portion of CE En 112 • Technical drawing tools that you need • ANSI standard sheet sizes • Basics: Line weight & pencil grades • Alphabet of lines • Scales
Importance of technical graphics • Technical drawings: A language used in the design process for communicating, solving problems, quickly and accurately visualizing objects, and conducting analysis • A graphical representation of objects and structures and is done using freehand, mechanical, or computer methods
From traditional “linear” design process to new“concurrent” design process • Traditional: A linear, segmented activity involving problem identification, preliminary ideas, design refinements, analysis, optimization, and documentation • Concurrent: A team activity involving coordination of the technical and non-technical functions of design and manufacturing within a business The CAD database becomes a communication medium.
What’s the difference between artistic drawing and technical drawing? Artistic drawing vs. Technical drawing
Projection types Multiview vs. Isometric Cavalier vs. Cabinet oblique Perspective vs. Oblique
Pencil grades and Line weight Remember that Accuracy, Neatness, and Speed count in technical drawing
Civil engineering scale: English unit and Metric unit See Fig 1.50 through 1.60.
Reading a civil engineer’s scale See fig 1.50 through 1.60 for other types of scales.