N110P1 - Lecture#1 EGR 110 Engineering Graphics Reading Assignment Ch A-D in Engineering Graphics Workbook Series 1.2 or Series 2 Sketching Assignment

1 Lecture #1 EGR 110 – Engineering Graphics Welcome to EGR 110 Engineering Graphics • Syllabus • Group project • Homework • Web page • Office hours • Reminder: Bring memory storage device (disk or flash drive) to each class Reading Assignment: Ch. A-D in Engineering Graphics Workbook, Series 1.2 or Series 2 Sketching Assignment: Sketching Assignment #1

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2 Lecture #1 EGR 110 – Engineering Graphics Why does an Engineer need to learn Engineering graphics? • Engineers need to be able to communicate their ideas through drawings and to be able to “read” the drawings of others. • Engineering drawings are not art, but are technical presentations based on a well- defined graphic language (containing rules, symbols, standards, etc.) • Even though most Engineering drawings are created using CAD, the person creating the drawing must still know what rules to use. For example, a CAD program cannot determine the best view for showing a dimension or decide when to use visible lines or hidden lines. • A knowledge of CAD is one of the earliest marketable skills that an Engineering student might possess. Many Engineering students gain valuable experience working with CAD. • Many Engineers use CAD routinely. • Many Engineers will form sketches of drawings and then have CAD operators produce the drawings. However, the sketches must be technically accurate. For example, it would be unreasonable to expect a CAD operator to know how you wish to layout, dimension, annotate, or section a drawing.

3 Lecture #1 EGR 110 – Engineering Graphics Drawings may be : • Freehand sketches • Mechanical drawings (a rapidly vanishing area) • Computer-Aided Drawings (CAD) • Additionally, CAD drawings may be: – 2D Drawings – 3D Solid Modeling – 3D Parametric Solid Modeling (a more design-oriented approach) Drafting standards There are precise rules for graphical communication. For example, a standard symbol is used to represent a counterbored hole. A key standard is the American National Standard Drafting Manual – Y14 . An engineer needs to be familiar with drafting standards in order to communicate effectively. The textbooks used in this course will introduce the student to important drafting standards.