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Role of Engineering Drawing: The engineering drawing subject is designed to impart the following skills: 1. Ability to read and prepare engineering drawings. 2. Ability to make free - hand sketching of objects. 3. Power to imagine, analyze and communicate. 4. Capacity to understand other subjects.
used for preparation of drawings. • Standards – set of rules for preparation of technical drawings. Conventions – commonly accepted practices in technical drawings. • Tools – devices used to create technical drawings and models. • Applications – the various uses for technical drawings.
Draw a line AB equal to the given length of side. Draw a line BQ equal to AB in length and perpendicular to AB. With centre P and radius PQ, draw an arc intersecting AB produced at R. AR is equal to the diagonal length of the pentagon. ABCEF is the required pentagon.
Engineering Drawing II. Lecture 2. Orthographic Projection. Projection. Behind every drawing of an object is a space relationship involving four imaginary things: The observer’s eye or the station point. The object. The plane of projection. The projectors or visual rays or lines of sight. Projection.
This handbook is prepared with the primary aim to elaborate necessary basic rules and regulations of engineering drawing that is necessary for students of every engineering discipline. This book is for beginners to introduce them with different elements of engineering drawing.
The purpose of this guide is to give you the basics of engineering sketching and drawing. We will treat “sketching” and “drawing” as one. “Sketching” generally means freehand drawing. “Drawing” usually means using drawing instruments, from compasses to computers to bring precision to the drawings. This is just an introduction.
Drawing an arc tangent to a given point on the line Steps • Given line AB and tangent point T. Construct a line perpendicular to line AB and through point T. • Locate the center of the arc by making the radius on the perpendicular line. Put the point of the compass at the center of the arc, set the compass for the radius of the arc, and ...
