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NECO Technical Drawing Syllabus

Are you writing Technical Drawing in your NECO O’level exams? Download the recommended Technical Drawing syllabus to excel in your exams.

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About NECO Technical Drawing Syllabus

This NECO Technical Drawing exam syllabus is designed to guide you through everything you need to know to succeed in the exam. Technical drawing, sometimes called drafting, is all about visually communicating ideas, whether it’s for engineering, architecture, or design.

This syllabus covers the basics of drawing tools and techniques, along with more advanced topics like perspective, geometric constructions, and design principles. You’ll learn how to create clear, precise drawings that can be used to build, design, or explain projects.

This syllabus will also expose you to different types of technical drawings, like orthographic projections, isometric views, and exploded diagrams. Whether you’re interested in engineering, or architecture, or just love to draw and design, there’s something here for you.

Throughout the course, you’ll get to practice these skills through practical exercises and projects. By the end, you’ll not only be prepared for the exam but also equipped with skills that are valuable in many careers.

Marking Guide & Sections

Let’s break down how the exam is structured and how the marking works. This should help you understand what to focus on and how to make the most of your time.

Paper 1: Multiple-Choice Objective

Paper 1 has 40 multiple-choice questions split into two sections. You’ll answer all 40 questions in one hour, totaling 40 marks. Paper 1 questions are divided into two part; Section A and B. Section A questions are 30 and they are set from general principles, techniques, and uses of plane and solid geometry. Section B has 10 questions and you are expected to choose between Part I (Building Drawing) and Part II (Mechanical Drawing). You are expected to answer all questions in your chosen part.

Paper 2: Essay Questions

Paper 2 comprises 5 essay questions, and you’ll need to answer 3 of them in 1 3⁄4 hours. The total marks for this paper are 60. This paper covers topics like plane geometry, solid geometry, and vector geometry. And each question carries 20 marks, answering three questions correctly can earn you a maximum of 60 marks.

Paper 3: Sketches and Practical Drawing

Paper 3 is the practical aspect of this exam, this paper has two sections, it requires a mix of sketches and detailed drawings. 2¾ hours will be allocated to this section for a total of 100 marks. This paper is divided into two sections; Section A and B.

Section A: This section contains three questions. One is compulsory, and you’ll need to answer one other question. This part focuses on sketches of objects, components, symbols, and tools used in the Building and Mechanical industries. You have 45 minutes to complete this section. The total questions required for your answer is worth 70 marks.

Section B: This section has two questions, one on Building Drawing and one on Mechanical Drawing. You’ll choose one to answer in 2 hours. The compulsory question in this section is worth 20 marks, while the other question is 10 marks.

The NECO Technical Drawing Syllabus

  
 TECHNICAL DRAWING
SNTOPICOBJECTIVES
1Drawing materials and equipment, types of
drawing and applications
-Standard size drawing A2 ISO board and drawing sheet, set squares,
drawing instruments, protractor and T-square.
2Lines, lettering and dimensioning-Types of lines and their uses. Types and styles of lettering, title blocks and
border lines. These should conform to BS 1192 and BS 308A.
3Division of lines and its applications-Dividing into a given number of equal parts or proportion and other
simple exercises involving mathematical problems.
4Scales and their uses-Plain and diagonal scales, constructions and their applications, including
scale of chords.
5AnglesTypes and their constructions
6Triangles, quadrilaterals and other polygonsRegular and irregular polygons: properties and their constructions.
7CirclesParts, types, properties and their constructions.
8Tangents and tangency
Construction and application of principles of tangency to spanner, anchors
and other tools.
9Inscribed, circumscribed and inscribed
figures
Definitions, identification and their constructions.
10Similar figures and areasEnlargement and reduction by area and side.
11Loci-Definition and construction of straight line, circle,ellipse, parabola,
hyperbola, helix, trochoids (inferior and superior) spiral, cycloid,
hypocycloid, involutes and link mechanisms.
 SOLID GEOMETRY
12Lines in space and planesLocation of points and lines in space. True length and angle of inclination
of a line. Intersecting lines, plane relationships and traces.
Types of planes and edge views of planes.
13Pictorial drawing: isometric, oblique,
perspective
Isometric scales and circles, oblique scales and curves.
One and two points perspective, including free hand
sketching.
14Orthographic projectionMultiplane,1st and 3rd angle projection.
15Auxiliary projectionsPrisms, cones, cylinder, cube, pyramid (right and
oblique), including second auxiliary projection.
16Sectional views and true shapesTrue shape of sections of prisms, cylinders pyramids
and cones, (ellipse, parabola, hyperbola, circle and
triangle).
17Development of surfacesSurfaces of right and oblique pyramids, prisms,
cylinders, cones and their truncated parts and frustum
.Transition pieces.
18Intersection /InterpenetrationIntersections of cylinders, cones, prisms and pyramids.
 SYMBOLS AND CONVENTIONS
19Symbols and conventions used in plane and
solid geometry
Example, the symbol used to indicate the diameter of a
circle.
 BUILDING DRAWING
1Freehand sketching and identification of
building tools
Both pictorial and orthographic sketches of building
tools.
2Foundations and FloorsTypes and parts of foundations and floors.
3Openings – windows, doors and archesTypes and parts of doors, windows and arches.
4Stairs and staircasesParts and types of staircases.
5RoofsTypes and parts of roofs.
6Constructional details of parts of buildingsIncludes wall, column, beam, lintel, etc.
7Working drawings of buildingsOrthographic projections and sectional views.
8Building materials, freehand sketching,
symbols and conventions
Including electrical and plumbing fittings.
 MECHANICAL DRAWING
1Freehand sketching and identification of
mechanical tools
Both pictorial and orthographic sketches of mechanical
tools.
2DimensioningLimits and fits, allowances, tolerances; emphasis on
correct techniques.
3Screw threads, fasteners and locking
devices
Include conventional representation, construction and
their applications.
4SectioningFull,half-part,offset,broken,removed,aligned and
revolved.
5Pictorial drawingIsometric and oblique drawing; including freehand
sketching.
6Working and assembly drawing.Orthographic and sectional views.
7Symbols, conventions and abbreviationsInclude electrical and plumbing fittings and welding
symbols.

Recommended NECO Technical Drawing Textbooks

1. M.A Parker and F. Pickup, Engineering Drawing with worked examples 1 & 2 (3rd edition). Nelson Thorns LTD

2. K. Morling, Geometric and Engineering.

3. A.Yarwood Geometric and Technical Drawing, ELB and Nelson.

4. A. Parkerson, Foundation of Technical Drawing.

5. W.E.Kudor, Technical Drawing with Mechanical Engineering & Drawing Option.

Frequently Asked Questions About the NECO Technical Drawing Exams

How many papers do I need to take for the NECO Technical Drawing exam?

There are three papers: Papers 1, 2, and 3. Paper 1 and Paper 2 are taken together in one sitting, while Paper 3 is separate. To complete the exam, you must take all three papers.

What's the structure of Paper 1?

Paper 1 has 40 multiple-choice questions, and you have one hour to answer them. It has two sections: Section A has 30 questions on plane and solid geometry, and Section B has 10 questions. For Section B, you can choose between Part I (Building Drawing) or Part II (Mechanical Drawing).

How long do I have for Paper 2, and what's it about?

You have 1¾ hours to answer three out of five essay questions. The questions cover plane geometry, solid geometry, and vector geometry. This part is worth 60 marks, so take your time to explain your answers clearly and use diagrams when needed.

What can I expect in Paper 3?

Paper 3 is in two sections and lasts 2¾ hours, with a total of 100 marks. Section A has three questions, one compulsory (worth 20 marks), and you choose one of the other two (worth 10 marks). This section focuses on sketches of objects, symbols, components, and tools from Building and Mechanical industries. Section B has two questions, one on Building Drawing and one on Mechanical Drawing, you choose one to answer in 2 hours, and it’s worth 70 marks.

Can I bring drawing tools into the exam?

Yes, you can bring basic drawing tools like pencils, erasers, rulers, compasses, and set squares. Check with your exam center for any specific rules they might have, but having these tools will help you create accurate and clear drawings.

Do I need to be good at math to do well in Technical Drawing?

Technical Drawing involves geometry, but it’s not heavily focused on complex math. As long as you understand basic geometric concepts and can apply them in your drawings, you should be fine. Just focus on practicing and getting familiar with the types of questions you’ll encounter.

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