Technical Drawing (Grade 10) By Mr. Blanchette
RATIONALE
Technical Drawing is a visual means of communicating clearly and concisely all the information (drawings, dimensions, notes, specifications) necessary to transfer an idea or concept into reality. It is based on the principles of projection in two-dimensional and three-dimensional representations. Technical Drawing has its most common application in the field of manufacturing, engineering, architecture and construction where it is used to document and support the design process. This is accomplished by communicating ideas about the shape, form, dimensions, materials, manufacturing methods and finishes of articles to be produced. Technical Drawing plays an indispensable role in determining the quality and competitiveness of finished products in the design process. It is, therefore, an important prerequisite and an essential companion for the CSEC Industrial Technology programmes which provide the foundational competencies in manufacturing and industrialisation in the Caribbean.
AIMS
The syllabus aims to:
- enable students to acquire an understanding of the relationship of design and drawing in manufacturing and industrialisation;
- provide students with the competencies required for understanding, interpreting and producing technical drawings aligned with established standards, conventions and technology;
- develop students’ critical thinking, quality standards and teamwork skills in the production of drawings using traditional methods or design software packages;
- develop students’ appreciation of creativity, imagination and aesthetics in designs and drawings;
- provide students with foundation competencies in entrepreneurial skills for employment creation and economic development.
Lessons
- Discuss safety, health and welfare standards for the technical drawing workshop/laboratory;
- Develop safety, health and welfare requirements governing workshop/laboratory;
- Classify safety resources for specific operations;
- Classify the different types of fires and fire-fighting equipment;
- Use a fire extinguisher;
- Differentiate among accident, injury and emergency;
- Apply basic First Aid principles and practices;
- Explain how to get professional help when an accident occurs;
- Identify hazards and hazardous substances;
- Perform mock drills for emergencies.
- Discuss the importance of Technical Drawing to industry;
- Discuss standards relating to technical drawings;
- Outline the functions of equipment and materials used in technical drawing;
- Demonstrate the use of tools and equipment;
- Classify the various types of lines used in Technical Drawing;
- Construct the various types of lines;
- Apply basic lettering and dimensioning techniques;
- Read and convert measures using various scales;
- Apply the principles of freehand sketches;
- Apply the principles of CAD;
- Explain the steps in the design process;
- Outline the principles and elements of design;
- Discuss drawing skills in the design process;
- Design building and engineering components given design specifications.
- Differentiate between “plane geometry” and “solid geometry”;
- Apply plane geometrical construction principles using manual and computer-aided methods;
- Construct tangents to given specifications;
- Apply the basic principles of analytic geometry to Loci;
- Illustrate the path of points in simple mechanisms;
- Contrast between mathematical and graphical representations of areas of figures;
- Construct plane geometric figures equal in areas to other figures;
- Divide triangles and polygons into a number of equal and proportional parts;
- Reduce and enlarge plane figures by linear measurements, ratio of sides and ratio of areas.
- Compare the various types of pictorial drawings;
- Prepare pictorial drawings;
- Discuss the principles of First and Third angle projections;
- Prepare orthographic drawings of geometrical solids;
- Examine the importance of sectional drawings;
- Prepare sectional views of geometrical solids;
- Determine the true shapes of sectioned surfaces of geometric solids;
- Discuss the different types of auxiliary views;
- Prepare auxiliary drawings;
- Explain the importance of surface development;
- Construct surface development of oblique and frustum solids;
- Construct curves of interpenetration of geometric solids with their axes in the same plane;
- Draw helical spring of circular cross-section;
- Draw orthographic views given pictorial drawings;
- Prepare pictorial drawings given orthographic views;
- Solve drawing problems using orthographic and pictorial projections.
- Discuss the uses of building standards in the preparation and interpretation of building drawings;
- Discuss the types of drawings used in the building industry;
- Differentiate among various types of architectural drawings;
- Evaluate standard architectural practices;
- Prepare architectural drawings to specifications;
- Compare entrepreneurship and wage employment;
- Discuss the principles of entrepreneurship;
- Prepare a small business plan for a viable service or product in architecture.
- Discuss engineering drawing standards;
- Discuss basic engineering materials;
- Identify conventional representations of standard engineering components;
- Interpret symbols of machine parts and components;
- Identify welding and brazing symbols of fabricated parts and components;
- Compare entrepreneurship and wage employment;
- Prepare engineering drawings;
- Prepare a small business plan for a viable service or product.