Ch.1 Introduction to Graphics Communication

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 you will learn in the manual drafting portion of CE112

What’s the difference between artistic drawing and technical drawing? Artistic drawing vs. Technical drawing

Projection techniques we learn

Projection types Multiview vs. Isometric Cavalier vs. Cabinet oblique Perspective vs. Oblique

Samples of drawing conventions and standards

Manual drafting tools for technical drawing

Use of drafting tools – a few examples

ANSI Standard Sheet Sizes & typical title block layouts

Pencil grades and Line weight Remember that Accuracy, Neatness, and Speed count in technical drawing

Alphabet of lines (1)

Alphabet of lines (2)

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.

Ch.1 Introduction to Graphics Communication

Ch.1 Introduction to Graphics Communication

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CH 1 INTRODUCTION

ch.1 Introduction