Technical Drawing

Welding Technology · Level 5  ·  6 Chapters

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What Technical Drawing covers

In this unit, you will be able to confidently gather and use the right drawing tools and materials to create precise technical drawings. You will master the skills to construct geometric shapes, measure and bisect angles, and interpret and develop detailed patterns and solid drawings. By the end, you’ll be equipped to produce clear, accurate sketches and technical illustrations that bring real-world projects to life with professionalism and skill.

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Careers after Technical Drawing

Technical drawing is the visual language that turns ideas into metal. Whether you join a bustling fabrication shop, start your own metal-art studio, or support large infrastructure projects, the ability to produce clear, accurate drawings is what makes a welding team efficient, safe, and profitable.

  • Fabrication workshops in Nairobi’s Industrial Area - you lay out precise orthographic and isometric drawings of steel frames, pipe-spools and support structures, enabling welders to cut and assemble components without costly re-work, and you earn a steady wage as a drafter or shop-floor supervisor.
  • Construction firms building bridges and road culverts in Kiambu and Nakuru - you create auxiliary views, true-shape sections and angle-bisecting sketches that guide steel-reinforcement crews, and you receive project-based fees or a salaried position as a detailer.
  • Ship-repair yards at the Mombasa Port - you interpret first-angle orthographic drawings of hull plates and produce isometric curves for pipe routing, helping marine welders fit components quickly, and you are paid per vessel or as a full-time design technician.
  • Agricultural machinery manufacturers in Eldoret - you develop solid drawings and pattern sketches for tractor frames and irrigation pipe fittings, allowing CNC-cutters and welders to fabricate parts to exact specifications, and you earn a regular salary in the production department.
  • Renewable-energy installers assembling solar-panel mounting structures in Kisumu - you produce free-hand and scaled sketches of brackets, measure and bisect angles for roof-mount angles, and you can work freelance, charging clients per set of installation drawings.
  • Custom metal-furniture studios in Karen and Kilimani - you draw detailed patterns, apply symbols and abbreviations for decorative welds, and you sell finished pieces or offer design-drawing services, turning each commission into profit.
  • Mining equipment maintenance units in Kitale - you construct sections and isometric sketches of heavy-duty conveyor frames, enabling onsite welders to replace worn parts efficiently, and you receive a wage as a technical illustrator or contract per-draw.
  • Automotive body-shop networks in Thika - you interpret and produce solid and auxiliary views of chassis reinforcements, helping welders restore vehicle frames accurately, and you earn either a shop salary or per-job drawing fees.
  • Small-scale community workshops in rural counties - you gather the right drawing tools and materials, teach apprentices to read line conventions and measure angles, and you generate income by offering paid training sessions or drawing-service packages to local tradespeople.
  • Government-led infrastructure projects in county referral hospitals and schools - you prepare clear isometric and sectional drawings of steel staircases, handrails and structural supports, ensuring compliance with safety standards, and you are compensated through contract work or a permanent drafting role.

Your mastery of these drawing skills opens doors across Kenya’s thriving metal-working landscape - whether you prefer the stability of a salaried position or the freedom of running your own design studio. Keep sketching, keep measuring, and watch your drawings become the backbone of Kenya’s next generation of welded creations.

Chapters

What Technical Drawing covers: 24 main topics in 6 chapters

1. Use technical drawing tools, equipment and materials

  1. 1.1 Drawing equipment
  2. 1.2 Drawing materials
  3. 1.3 Use and maintenance of drawing equipment

2. Produce plane geometry drawings

  1. 2.1 Types of lines in drawings
  2. 2.2 Construction of angles
  3. 2.3 Bisection of angles
  4. 2.4 Measurement of angles
  5. 2.5 Construction of plane geometric forms
  6. 2.6 Construction of scales

3. Produce orthographic drawings of components

  1. 3.1 Orthographic drawings
  2. 3.2 Dimensioning
  3. 3.3 Sectional views
  4. 3.4 Free hand sketches

4. Produce solid geometry drawings

  1. 4.1 Sketches and drawings of patterns
  2. 4.2 solids drawings
  3. 4.3 Development and interpenetrations of solids
  4. 4.4 Different symbols and abbreviations
  5. 4.5 Auxiliary views and true shapes of truncated solids

5. Produce Isometric drawings

  1. 5.1 Isometric sketches and drawings of components
  2. 5.2 Isometric curves and circles
  3. 5.3 Oblique sketches of components

6. Produce assembly drawings

  1. 6.1 Orthographic views of assembly drawings
  2. 6.2 Sectional views
  3. 6.3 Parts list

Practise this unit

Revise this unit

3 more for this unit

Beyond the syllabus

Other units in Module IV