Introduction to Engineering Drawing
ENGINEERING DRAWING-IDWG-101
Aamir Naveed
Lecture # 1
Text Book
“Fundamentals of Engineering Drawing”by
French & Vierck
Course Breakdown
Course Breakdown
Course Breakdown
Drawing ToolsTwo conventional / mechanical pencils: 0.7 and 0.5 mm, or 0.5 and 0.3 mm, or 0.3 and 0.6mm combinations; Pencil grades – HB and H, or F and 2H combinationsOne compass and one dividerOne set of 45- and 30/60-degree trianglesTwo scales (one English unit and one Metric unit)One irregular curve (French curve)One protractorOne T-scale (optional)One good sharpener and eraser
Types of Pencils
The best pencil for lettering on most surfaces are the H, F, and HB grades.
Learning Objectives
To introduce the basic concept of the engineering drawing
Importance of the subject
Definition of the drawing
Introduction
Engineering Drawing is just that communication mode, which can describe the minute details even without wasting enormous time and effort.
By definition “Engineering Drawing is the graphical representation of physical objects and relationships”.
Introduction
It is accomplished by describing the shape and size of the object with the help of “Lines” and “Letters”
Lines represent the surfaces and edges of the object.
Letters represent the symbols. Dimensions and word notes.
Method of Expression
There are two methods of making an Engineering Drawing
1-Free Hand Drawing
Done only with pencils and erasers
Used during learning process
Used also for preliminary designing
2-With Instruments
Standard Method of Expression
Used for all types of drawings (including detailed aircraft designing)
Single Stroke Gothic Lettering
Lettering – Vertical Gothic Font
13
Lettering with Fractions
Sketching Techniques