Overview
This material provides a summary of key topics, past questions, and marking guidelines for Grade 12 NSC Paper 1 Engineering Graphics and Design (EGD), including Analytical Civil, Interpenetration and Development, Perspective Drawing, and Civil Drawing.
Analytical Civil
- Focuses on analyzing civil engineering drawings and interpreting details.
- Requires understanding structural elements, dimensions, and specifications in provided diagrams.
- Questions test the ability to read symbols and extract information from civil plans.
Interpenetration and Development
- Covers the joining and intersection of geometric shapes (e.g., prisms, cylinders).
- Involves drawing true shapes of intersecting surfaces and developing surface patterns.
- Test items may involve unfolding 3D shapes to create accurate development views.
Perspective Drawing
- Involves drawing objects as they appear to the eye in three-dimensional space.
- Focuses on techniques like one-point and two-point perspective.
- Questions assess the ability to create realistic representations using vanishing points and horizon lines.
Civil Drawing
- Covers detailed working drawings used in civil engineering projects.
- Includes site plans, sections, elevations, and detail drawings.
- Questions require application of drawing conventions and understanding of drawing layout.
Key Terms & Definitions
- Analytical Civil — the process of analyzing and interpreting civil engineering drawings.
- Interpenetration — the intersection of two or more geometric solids.
- Development — unfolding or laying out the surface of a 3D object into 2D.
- Perspective Drawing — technique for depicting spatial objects realistically on a 2D surface.
- Civil Drawing — technical drawings that communicate information about infrastructure or construction projects.
Action Items / Next Steps
- Review past exam questions and marking guidelines for each topic area.
- Practice drawing and interpreting analytical civil, interpenetration, development, and perspective problems.
- Study key terms and their applications in technical drawings.