Introduction to Engineering Graphics Engineering Graphics use in many engineering discipline Mechanical Architecture Electrical Aerospace Structural Product Representation (3 –D drawing)

Typical Branches of Engineering Graphics Mechanical Power Generation Transportation Manufacturing Power Services Atomic Energy Marine Vessels

Typical Branches of Engineering Graphics Architectural Commercial Buildings Residential Buildings Institutional Buildings Environmental Space Forms

Typical Branches of Engineering Graphics Electrical Power Generation Power Application Transportation Illumination Industrial Electronics Communications Instrumentation Military Electronics

Typical Branches of Engineering Graphics Aerospace Aerodynamics Structural Design Instrumentation Propulsion Systems Materials Reliability Testing Production Methods

Typical Branches of Engineering Graphics Piping Liquid Transportation Manufacturing Power Services Hydraulics Pneumatics

Typical Branches of Engineering Graphics Structural Structural Designs Buildings Planes Ships Automobiles Bridges

Typical Branches of Engineering Graphics Technical Illustration New Products Assembly Instructions Presentations Community Projects Renewal Programs

Drawing Equipment

Drafting Equipment Drafting Machine

Drafting Equipment Triangles 45° 30°/60°

Drafting Equipment Adjustable Triangle

Drafting Equipment Protractors Half-Circle Full-Circle

METRIC SCALE 1:1 SCALE (1mm DIVISIONS) mm 1:

METRIC SCALE 1:2 SCALE (2mm DIVISIONS) mm 1:

Drafting Equipment Compasses Drop Bow Bow

Drafting Equipment Compasses Beam

Drafting Equipment Wooden Pencil Automatic Pencil Mechanical Pencil

Drafting Equipment Erasers

Drafting Equipment Erasing Shield Drafter’s Brush

Drafting Equipment Templates

Drafting Equipment Irregular Curves

Drafting Equipment Technical Pens

Drawing as a Language BS308 Part 1 and Part 2 Consist of: Types Of Lines, abbreviation, symbols, notations, values, etc

LEADER APPLICATION OF LINES DIMENSION LINE EXTENSION LINE HIDDEN LINE BREAK LINE VISIBLE LINE CUTTING-PLANE LINE CENTER LINE (PATH OF MOTION) CENTER LINE SECTION LINE PHANTOM LINE VIEWING-PLANE LINE

CIRCLES AND ARCS ESTABLISH CENTER LINES DRAW CIRCLES AND ARCS COMPLETE OBJECT LINES Highlighting the center lines for circles – Extended the objects

HIDDEN LINE TECHNIQUE

DICTIONARY OF DRAFTING GEOMETRY STRAIGHT LINE (SHORTEST DISTANCE BETWEEN TWO POINTS) PARALLEL LINES INTERSECTING LINES

DICTIONARY OF DRAFTING GEOMETRY RIGHT ANGLEACUTE ANGLE OBTUSE ANGLE COMPLEMENTARY ANGLE SUPPLEMENTARY ANGLE

DICTIONARY OF DRAFTING GEOMETRY EQUILATERAL TRIANGLE ALL SIDES EQUAL LENGTH ISOSCELES TRIANGLE TWO SIDES EQUAL LENGTH RIGHT TRIANGLESCALENE TRIANGLE

DICTIONARY OF DRAFTING GEOMETRY CIRCLES CONCENTRIC ECCENTRIC

DICTIONARY OF DRAFTING GEOMETRY SQUARE RECTANGLE RHOMBUS RHOMBOID TRAPEZOID TRAPEZIUM

DICTIONARY OF DRAFTING GEOMETRY PENTAGON HEXAGONHEPTAGONOCTAGON NONTAGON DECAGON DODECAGON

DICTIONARY OF DRAFTING GEOMETRY CUBE RIGHT RECTANGLE RIGHT TRIANGULAR PRISM RIGHT TRIANGULAR PYRAMID RIGHT CYLINDER RIGHT CONE FRUSTUM OF A CONE SPHERE

PRACTICE BISECTING A LINE

PRACTICE BISECTING AN ARC

PRACTICE BISECTING AN ANGLE

1-40 Figure 1.13 Practice Lettering

PAPER SIZE Paper sizeBorder width (mm)Diamensions (mm) ab A X841 A X594 A X420 A X297 A X217

1-42 Figure 1.15 – Paper sizes (a) (b) Paper Border

1-43 Figure 1.16 – Explain typical layout of a drawing sheet (suitable for detail drawings)

1-44 Figure 1.17 – Explain typical layout of a drawing sheet (suitable for assembly and multi detail drawings)

Assignment 1 Take home/Draw in Class