Skip to Content
Engineering Design: A Project-Based Introduction, Fourth Edition
book

Engineering Design: A Project-Based Introduction, Fourth Edition

by Clive L. Dym, Patrick Little, Elizabeth Orwin
October 2013
Intermediate to advanced
336 pages
11h 42m
English
Wiley
Content preview from Engineering Design: A Project-Based Introduction, Fourth Edition

APPENDIX B

PRACTICAL ASPECTS OF ENGINEERING DRAWING

images

ENGINEERS AND machinists have developed a common language for engineering drawings in order to communicate design ideas effectively and efficiently. This language is detailed in the ASME Y14.5M-1994 standard and is referred to as geometric dimensioning and tolerancing (GD&T). As preface to a full discussion of GD&T, we will first review best practices of dimensioning.

B.1 DIMENSIONING

In order to understand the geometric dimensioning and tolerancing system, we must first understand the appropriate method for dimensioning or putting dimensions on a drawing. Dimension placement, symbols, and conventions are all important to the common language for engineers and machinists. The following concepts are essential for understanding dimensioning of technical drawings.

B.1.1 Orthographic Views

Most technical drawings show orthographic views of the object being represented. Orthographic or principal views are drawings based on the projection of the object onto a plane. The best way to visualize an orthographic drawing is to imagine a “glass box” around the object, with a projection of the object onto each surface of the box. The box is then unfolded to give rise to the six primary views of the orthographic drawing: top, front, and bottom views; and right-side, left-side, and rear views (Figure B.1). It should be noted that this particular ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Manual of Engineering Drawing, 3rd Edition

Manual of Engineering Drawing, 3rd Edition

Colin H. Simmons, Dennis E. Maguire
Technical Drawing with Engineering Graphics, 15th Edition

Technical Drawing with Engineering Graphics, 15th Edition

Frederick E. Giesecke, Alva Mitchell, Henry C. Spencer, Ivan L. Hill, John T. Dygdon, James E. Novak, R. O. Loving, Shawna E. Lockhart, Cindy Johnson

Publisher Resources

ISBN: 9781118324585Purchase bookOther