Unit Aim
The aim of this unit is to provide Learners with the knowledge, understanding and skills in the essential principles and techniques of technical drawing. This unit focuses on drawing standards, geometric constructions, orthographic projection, perspective drawing and computer-aided design (CAD). This unit focuses on developing precision and clarity in technical sketches and drawings.
Unit Content
Know technical drawing principles and practices including drawing standards and conventions.
Basic principles and objectives of technical drawing
Importance of technical drawing in interior design and architecture
Technical drawing in design communication and documentation
Standard drawing practices (e.g. ISO, BS, ANSI)
Line types, weights and their meanings
Dimensioning, annotation and symbol conventions
Title blocks, scales and drawing sheet organisation
Be able to produce technical drawings using industry standards and conventions.
Types of drawings
Accuracy and scale
Drawing tools and software
Design objectives: translating client briefs and design concepts into technical representations.
Line types: solid (visible edges), dashed (hidden elements), centre lines, break lines.
Line weights: differentiating between structural elements, furniture and annotations.
Hierarchy and clarity: using line variation to guide the viewer’s eye and emphasise key elements.
Drawing conventions
Dimensioning rules: placement, alignment and spacing of dimensions; using consistent units.
Symbols: standard architectural symbols (e.g., electrical outlets, lighting, plumbing fixtures).
Annotations: clear, legible text for labels, notes and material specifications.
Consistency: uniform use of fonts, line weights, symbols and layout across all drawings.
Clarity: avoiding overcrowding, overlapping elements and ambiguous labels.
Industry standards
Be able to explore geometric constructions accurately.
Construction of basic geometric shapes (e.g. triangles, circles, polygons)
Techniques for constructing angles, arcs, tangents and bisectors
Use of compasses, set squares and templates
Application of geometric constructions in design
Be able to generate orthographic projections of objects.
Principles of orthographic projection
First-angle and third-angle projection methods
Drawing front, top and side views of objects
Interpreting and creating orthographic drawings
Communicating design intent through orthographic drawings
ICM Certificate in Interior Design Qualification Specification
Be able to produce isometric and axonometric drawings.
Isometric, dimetric and trimetric projections
Isometric and axonometric applications
Drawing techniques for isometric views
Axonometric drawing for spatial representation
Comparison of isometric and axonometric applications
Be able to develop perspective drawings with depth and realism.
One-point, two-point and three-point perspective principles
Horizon lines, vanishing points, and eye level
Constructing interior and exterior perspectives
Enhancing depth and realism in perspective drawings
Be able to demonstrate proficiency in detail and assembly drawing.
Creating detailed component drawings
Exploded views and sectional drawings
Assembly drawings for furniture and fixtures
Labelling and dimensioning for construction clarity
Be able to use technical sketching techniques.
Freehand sketching techniques for technical communication
Sketching orthographic and isometric views
Using sketching to explore and refine design ideas
Improving visual communication through sketching practice
