Chabot College Fall 2005
Replaced Fall 2010
Course Outline for Engineering 22
ENGINEERING DESIGN GRAPHICS
Catalog Description:
22 – Engineering Design Graphics 3 units
Introduction to the engineering-design process, and to technical-graphic communications tools used by engineers. Conceptual design of products. Development of spatial reasoning skills. Orthographic and axonometric projection-drawing techniques. Tolerance analysis for fabrication. Documentation of designs through engineering working-drawings. Use of AutoCAD Computer-Assisted Drawing software as a design tool. Basic CAD 3-dimensional solid-modeling. Strongly recommended: Mathematics 36 or 37, and English
1A or 52A. 2 hours lecture, 3 hours laboratory.
[Typical contact hours: lecture 35, laboratory 52.5]
Prerequisite Skills:
None
Expected Outcome for Students:
Upon completion of the course, the student should be able to:
1. explain the engineering design process;
2. use of drafting/sketching instruments: triangles, scale/ruler, compass, drawing templates;
3. draw technical sketches;
4. use proper engineering lettering techniques;
5. demonstrate through drawing, the use of line construction, and identify line-forms contained in the
“alphabet” of technical linework;
6. practice the use of computer aided drawing (CAD) tools;
7. illustrate and discuss solid-object visualization techniques;
8. sketch or draw graphic elements; e.g., planes, angles, surfaces;
9. construct orthographic projection drawings: a. multiview b. auxiliary view c. section view;
10. construct axonometric projection drawings: a. isometric b. oblique;
11. apply dimensions to engineering drawings with a basic knowledge of tolerances;
12. describe the fundamental concepts of Geometric Dimensioning and Tolerancing (GD&T);
13. define, explain, and label standard threaded fasteners;
14. create engineering working-drawings used for fabrication and assembly;
15. use Computer Aided Drawing (CAD) software to construct 3-Dimensional (3D) drawing-models. a. Surface Models b. Solid Models;
16. generate using descriptive geometry techniques spatial relationships: a. the point view of a line b. the true length of a line c. the edge view of a plane d. the true size of a plane
Course Content:
1. The Engineering-Design process;
2. Using AutoCAD:

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Course Outline for Engineering 22, Page 2
Fall 2005 a. user interface and working-environment b. 2-dimensional drawing-construction commands c. drawing automation/facilitation commands d. basic Euclidean geometric-constructions;
3. Freehand sketching: a. using drafting instruments: triangles, scales, compasses, drawing templates b. engineering lettering: proper-style, and character formation c. Technical line types and usage as described by alphabet of lines d. Isometric, oblique, and orthographic drawing forms;
4. Orthographic-Projection, Multiview drawing: a. visualization – unfolding the “glass box” b. precedence of line types c. dimension transfer using 45° “mitre” lines;
5. Sectional Views: a. the cutting plane b. section lines c. types of section views; e.g, aligned, offset, removed, half, partial, broken-out;
6. Auxiliary Views: a. projection between normal and auxiliary planes b. dimension transfer to auxiliary view c. types of auxiliary views; e.g., partial, sectional, secondary;
7. Dimensioning: a. terms and conventions b. linear, angular, polar, ordinate, baseline, continued, and coordinate dimensions c. leaders and callouts;
8. Standard tolerancing: a. terms and conventions b. types of tolerances: plus/minus, one-sided, limit
9. Geometric Dimensioning and Tolerancing (GD&T): a. terms and conventions b. types of GD&T tolerances: form, profile, orientation, runout, location;
10. Threads and Fasteners a. terms, standards, conventions, and callouts b. thread graphical representation c. types of GD&T tolerances: form, profile, orientation, runout, location;
11. Working Drawings: a. title/tolerance/notes-blocks b. assembly drawings c. parts lists (i.e., Bills of Material or BoM’s);
12. Three Dimensional Drawing Using CAD a. AutoCAD 3D software environment b. surface models/drawings c. solid models/drawings;
13. Descriptive Geometry - use of successive orthographic projection to reveal the true location or size/shape of geometric elements a. point view of a line b. true length of a line c. edge view of a plane d. true size of a plane.
Methods of Presentation:
1. Formal lectures using PowerPoint and/or WhiteBoard presentations
2. Computer demonstrations
3. Reading from the text

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Course Outline for Engineering 22, Page 3
Fall 2005
4. Homework assignments a. creating freehand engineering-sketches b. producing engineering drawings using CAD
5. Laboratory use of computers
6. Class discussion of problems, solutions, and student’s questions
Assignments and Methods of Evaluating Student Progress:
1. Typical Assignments a. Read chapter-5 in the text on the geometric construction of orthographic-projection views b. Exercises from the text book, or those created by the instructor
1) Given a pictorial representation of a mechanical element with a cutting plane as shown, use
AutoCAD to draw the orthographic section-view
2) Properly apply the fabrication-required dimensions to the multiview drawing of a mechanical part (alignment block) shown below
3) Consider the Frontal and Profile views of a pipeline, mn , and spherical tank, centered at O , as shown below. Use AutoCAD and Descriptive Geometry methods to determine the distance from the surface of the sphere centered at point-O to the line MN. Use a scale of 1:40. State your answer in meters of clearance.
2. Methods of evaluating student progress a. weekly homework and/or CAD-laboratory assignments b. examinations c. final examination

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Course Outline for Engineering 22, Page 4
Fall 2005
Textbook(s) (Typical):
Engineering Graphics with AutoCAD 2004, with 180-Day AutoCAD Software Package, James D. Bethune,
Prentice Hall, 2004
Graphics for Engineers with AutoCAD 2002, 6/E, James H. Earle, Prentice Hall, 2003
Modern Graphics Communication, 3/E, Frederick E. Giesecke, Alva Mitchell, Henry C. Spencer, John T.
Dygdon, James E. Novak, Ivan Leroy Hill, Shawna Lockhart, Prentice Hall, 2004
Fundamentals Of Graphics Communication, Fourth Edition , Gary Robert Bertoline, Eric N. Wiebe, McGraw-
Hill, 2005
Special Student Materials:
1. Engineering Sketching Instruments: Triangles (2), scale/ruler, compass, circle-template, technical pencils
2. Laboratory access to AutoCAD Software
3. Floppy Disks
Reference
 J. Thilmany “What Do You Know? Employers hire engineers based on the CAD package they know. Or, they don’t.”, Mechanical
Engineering , vol. 126, no. 6 pp. 25-26, Jun2004
Bruce Mayer, PE • Course_Outline_ENGR22_041220.doc
New 18-Sep-04