Engineering Drawing Guide: For Students and Professional Engineers – Fourth Edition (2019)

• Basic, foundational drawing methods and techniques for engineering drawing.
• Information on learning outcomes for the “Engineering Council of South Africa” aimed at the subject of Engineering Drawing.
• A comprehensive text complying with the “ISO” Industrial Standards and Conventions, according to the Mechanical Engineering Drafting Code of Practice.
• Geometric constructions and examples for the guidance to accurate drawing of true forms and shapes, assisted by using projection lines.
• Step-by-step instructions and illustrations of the following: 1st and 3rd Angle Orthographic Projection; Isometric Drawing; Auxiliary Projections; Development; Lines of Interpenetration and Assembly Drawing. Sample Test questions have been included to reinforce these drawing skills.
• Graphic components, objects of various forms are provided, specifically to emphasise the importance of freehand sketching. Examples with model answers are given to demonstrate which views can be sketched, using freehand drawing before completing the finished product.
• Examples of Oblique drawings at 45° to the horizontal are given for the sake of a different perspective to Isometric drawings at 30° to the horizontal.
• Perspective drawing examples of mechanical components are given. Perspectives are frequently used in architecture, producing the most realistic images of all forms of pictorial drawing, providing additional effects and visual stimulation.
• ISO Limits and Fits: various fits between mating parts, hole–basis and shaft-basis systems. Tolerances used in dimensioning and Stack-ups involving tolerance build-ups.
• Internationally standardised electrical/electronic schematic symbols and circuit diagrams.
• Introduction to the fundamentals of machine drawing, design and manufacture. Practical applications involving direct (normal) loading – joints, connections and fasteners. Steel structures and compound beams, mostly used in civil engineering.
• Numerous drawing techniques in real design situations, provided for the technical drawing instruments/board and obviously for the use of CADD. Ultimately, as knowledge and skills are improved, computer aided design and drafting is essential, regardless of which software is used.
• Finally, Miscellaneous Information: Reference to significant mechanical data, useful to drawing and design students for project work. For instance: General Engineering Abbreviations; Surface Texture and Machining Symbols; Welding Joints and Symbols; ISO Bolts and Nuts; Tapping Drill Sizes and Recommended Maximum Bolt Loads and Torque Values. Formulae used in Workshops; Mechanical Properties of various Structural Materials; Conversion Tables, Weights and Measures; Lifting and Loading Equipment; Slotted Spring Pins; Keys and Keyways etc. Used by qualified technicians and engineers for drawing, design and manufacturing purposes.

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