Interior Design  ·  Level 6
Interior Design Model Making
Chapter 1: Interpret interior design drawings
📚 4 Topics
⚑ What you will be able to do

By the end of this chapter, you will be able to:

  • Choose the right measurement tools to take accurate spatial measurements.
  • Recognize and use the latest trends in spatial measurement techniques.
  • Analyze what your client needs and clearly define the project specifications.
  • Set data requirements and understand constraints based on your organization’s guidelines.
  • Identify and document all important details for spatial data collection, including deliverables and main tasks.
  • Verify spatial data to make sure it is accurate and reliable.

These skills will help you create precise and professional interior design plans that meet client needs and stand out in the trade.

Interior design projects in Kenya demand precise communication between clients, designers, and contractors to ensure the envisioned space is realized accurately within budget and timelines. Understanding how to interpret interior design drawings is crucial for cost estimation, resource allocation, and quality control. This chapter introduces model making as a vital tool for visualizing and refining design concepts, enabling professionals to foresee challenges, validate spatial arrangements, and communicate ideas effectively.

1.1 Introduction to model making

Model making is a hands-on approach that complements interior design drawings by providing a tangible, scaled representation of proposed spaces. In Kenya's dynamic interior design industry, models help bridge the gap between two-dimensional plans and three-dimensional reality, facilitating clearer communication with clients and stakeholders. This section explores the purpose, types, materials, and tools involved in model making to equip interior designers with essential skills for project costing and presentation.

1.1.1 Purpose of model making in interior design

Model making serves multiple critical functions in the interior design process, particularly in the Kenyan context where client engagement and regulatory approvals often rely on clear, demonstrative presentations.

  • Visualization of spatial relationships: Models allow designers and clients to perceive how furniture, fixtures, and circulation paths interact within a room, enhancing understanding beyond flat drawings.
  • Communication tool: Physical models help bridge language or technical knowledge gaps with clients, contractors, and artisans, ensuring all parties share a common vision.
  • Design refinement: By constructing a model, designers can identify potential design flaws or impractical elements early, reducing costly mistakes during implementation.
  • Cost estimation aid: Seeing a three-dimensional representation assists in more accurate quantity take-offs for materials and furnishings, improving budgeting accuracy.
  • Presentation and marketing: Models serve as compelling visual aids during client pitches or tender submissions, increasing the likelihood of project approval.

1.1.2 Types of models used in interior design

Different models serve distinct purposes depending on the project phase, budget, and complexity. Kenyan interior design professionals select appropriate model types to optimize communication and decision-making.

  • Conceptual models: These are rough, often abstract representations focusing on the overall form and spatial concepts without intricate detail. They are quick to produce and useful in early design stages.
  • Presentation models: More detailed and refined, presentation models showcase finishes, textures, and furniture placement to give clients a near-realistic preview.
  • Working models: These functional models are used by designers and contractors to test specific design elements, such as joinery details or lighting arrangements.
  • Digital models: Increasingly common, 3D computer-generated models complement physical ones by allowing virtual walkthroughs and quicker iterations.
  • Scale models: Built to precise scale ratios (e.g., 1:20 or 1:50), scale models provide accurate dimensional context vital for estimating material quantities and costs.

1.1.3 Materials used in model making

Choosing suitable materials is essential for creating effective models that balance durability, appearance, and cost, especially within Kenya’s resource availability.

  • Foam board: Lightweight and easy to cut, foam board is ideal for constructing walls and furniture shapes in both conceptual and presentation models.
  • Cardboard: Economical and readily available, cardboard is suitable for quick prototypes and testing spatial layouts.
  • Balsa wood: This softwood is easy to shape and sand, making it perfect for detailed elements like mouldings or furniture in presentation models.
  • Acrylic sheets: Transparent acrylic simulates glass or open partitions, adding realism to windows or display cases in models.
  • Clay and plaster: Used for sculptural or textured surfaces, these materials help represent finishes or organic forms.
  • Paper and fabric: These materials simulate upholstery or wall coverings, enhancing model realism.

1.1.4 Tools and equipment for model making

Effective model making requires specific tools that enable precision and efficiency. Interior design professionals in Kenya should maintain these tools in good condition to ensure quality models.

Name Specification Use
Cutting mat Self-healing, A3 or larger size Protects surfaces while cutting
Precision knife Replaceable blades, ergonomic handle Cutting materials accurately
Metal ruler Stainless steel, 30 cm or longer Guiding straight cuts
Tweezers Fine-pointed, stainless steel Handling small model components
Glue applicator Fine nozzle, quick-drying adhesive Assembling model parts
Sandpaper Various grits (80-400) Smoothing edges and surfaces
  • Cutting mats prevent damage to work surfaces and prolong blade life.
  • Precision knives allow clean cuts on foam board, cardboard, and balsa wood.
  • Metal rulers ensure straight, accurate cuts essential for scale accuracy.
  • Tweezers help position delicate or tiny components without damage.
  • Glue applicators provide controlled adhesive application, reducing mess and improving bond strength.
  • Sandpaper refines edges and surfaces to achieve professional finishes.

Practice Questions

  1. Explain five reasons why model making is important in interior design projects in Kenya. (10 marks)

  2. Differentiate between conceptual and presentation models, giving three features of each. (10 marks)

  3. List six materials commonly used in interior design model making and explain the suitability of each. (12 marks)

  4. Identify four essential tools for model making and describe their specific uses. (8 marks)

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🔒1.2 Interpretation of architectural and interior design drawings

Interpretation of architectural and interior design drawings is a critical skill for interior design professionals in Kenya. These drawings provide precise visual information necessary for planning, costing, and executing interior design projects within divers…

🔒1.3 Spatial elements in interior design

In the Kenyan interior design industry, understanding spatial elements is crucial for creating functional, aesthetically pleasing, and culturally appropriate environments. Interior designers must interpret spatial layouts from drawings to optimise the use of a…

🔒1.4 Scaling models writing

Scaling models writing is a critical skill for interior design professionals in Kenya, as it ensures that physical or digital models accurately represent the intended design within manageable dimensions. Proper scaling enables clear communication between desig…

Chapter Summary

This chapter provides a comprehensive overview of interpreting interior design drawings with a strong emphasis on model making as a practical tool for visualizing design concepts. It begins by introducing model making techniques that help translate two-dimensional drawings into tangible three-dimensional forms. The discussion then moves to the interpretation of architectural and interior design drawings, highlighting the importance of understanding symbols, annotations, and layout plans. Spatial elements are examined next, focusing on how space is organized and utilized within interior design to create functional and aesthetic environments. The chapter concludes by addressing the principles of scaling models and the correct methods for writing and applying scale in design documentation. Through these topics, students gain the skills necessary to accurately read, interpret, and represent interior design projects effectively.

Self-Assessment

🔒 PDFDownload this self-assessment, with answers

A. Written Assessment

  1. What is the primary purpose of making a physical model in interior design? (2 marks)
  2. Identify three common types of architectural drawings used in interior design interpretation. (3 marks)
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Chapter Examination Questions

🔒 PDFDownload these examination questions, with worked answers

SECTION A (40 Marks) - Answer ALL Questions

  1. Explain the purpose of model making in interior design projects for a corporate office in Nairobi. (4 marks)
  2. Identify three common architectural drawings used by interior designers and describe their significance. (4 marks)
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Chapter Practical Activities

Practical 1: Construct a scale model of a 4m x 3m interior living room space from provided interior design drawings

Interior Design · Level 6
Interior Design Model Making
PRACTICAL ASSESSMENT
TIME: 5 HOURS
⬇ PDFCandidate Instructions (Candidate Tool)

Type: Individual

INSTRUCTIONS TO CANDIDATE:
1.  You are required to perform the following task:
i.  Construct a scale model of a 4000mm x 3000mm interior living room space at 1:20 scale as per the provided interior design drawing.
2.  You have been provided with the following resources for the practical task:
Tools & EquipmentMaterials
Metal ruler 300mmBasswood sheets 3mm thick
Precision craft knifePVA glue
Cutting compassMasking tape 1 cm wide
Pencil HBClear plastic sheet 0.5mm thick
Sandpaper fine grit
Interior design drawing printout (scale 1:20)
4 Y12R8 links25mm cover150mm3000mmSECTION A-A4000mm3000mmPLANConstruct a scale model of a 4…4000 x 3000 x 150 mmMain: 4Y12 Links: R8@200NTS
⬇ PDFResources Required (Cutting List)
S/NItemQuantity
1Basswood sheets 3mm thick1 sheet per Candidate
2Cutting mat1 Pc per Candidate
3Metal ruler 300mm1 Pc per Candidate
4Precision craft knife1 Pc per Candidate
5PVA glue1 bottle per 5 Candidates
6Pencil HB1 Pc per Candidate
7Interior design drawing printout (scale 1:20)1 set per Candidate
8Sandpaper fine grit1 sheet per Candidate
9Cutting compass1 Pc per Candidate
10Masking tape 1 cm wide1 roll per 5 Candidates
11Clear plastic sheet 0.5mm thick0.5 m2 per Candidate
⬇ PDFAssessor Guide
Items to be EvaluatedMarks AvailableMarks ObtainedComments
TASK 1: Model Preparation and Setting Out
Wore appropriate PPE including gloves and eye protection
(Award 2 marks for correct PPE use)
2
Accurately measured and marked basswood sheets using the scale 1:20 from the provided drawing
(Award up to 4 marks for precise measurement and marking)
4
Correctly cut basswood sheets cleanly along marked lines using craft knife and ruler
(Award up to 4 marks for clean, accurate cutting)
4
Prepared all model components including walls, floor base, and openings
(Award 3 marks for completeness of components)
3
Used sandpaper to smooth edges of cut components
(Award 2 marks for proper finishing)
2
Applied masking tape or clamps to hold parts temporarily during assembly
(Award 2 marks for correct temporary fixing)
2
Demonstrated proper use of PVA glue during assembly
(Award 3 marks for clean and adequate gluing technique)
3
Sub-Total20
TASK 2: Assembly and Detailing of Scale Model
Assembled the model accurately maintaining scale dimensions and proportions
(Award 5 marks for correct assembly maintaining scale)
5
Included openings for doors and windows as per drawing
(Award 3 marks for correct openings placement and size)
3
Installed clear plastic sheets correctly to represent glazing
(Award 3 marks for neat and proper glazing installation)
3
Ensured model is stable and joints are secure
(Award 4 marks for stability and secure joints)
4
Final model cleaned and free of excess glue or marks
(Award 3 marks for neatness and finishing)
3
Sub-Total18
PRODUCT CHECKLIST
Model dimensions correctly scaled (Length 200mm, Width 150mm representing 4000mm x 3000mm at 1:20 scale)
(Award 4 marks for correct scaled dimensions)
4
Model accurately represents interior layout including walls, openings, and glazing
(Award 5 marks for accurate representation of layout)
5
Model components are square, plumb, and well aligned
(Award 4 marks for squareness and alignment)
4
Joints are uniform and neat with no visible gaps
(Award 4 marks for joint quality)
4
Model is complete and ready for client presentation
(Award 3 marks for completeness and presentation quality)
3
Sub-Total20
GRAND TOTAL58
ASSESSMENT OUTCOME:   ☐ Competent    ☐ Not Yet Competent (competent if at least 50%)

Practical 2: Identify and mark spatial elements on an interior design plan 7000mm x 5000mm

Interior Design · Level 6
Interior Design Model Making
PRACTICAL ASSESSMENT
TIME: 4 HOURS
⬇ PDFCandidate Instructions (Candidate Tool)

Type: Individual

INSTRUCTIONS TO CANDIDATE:
1.  You are required to perform the following task:
i.  Identify and mark spatial elements including zones, circulation paths, and functional areas on the provided interior design plan 7000mm x 5000mm.
2.  You have been provided with the following resources for the practical task:
Tools & EquipmentMaterials
Scale ruler (1:50 and 1:100)Interior design plan sheet 7000mm x 5000mm
Pencil HBTracing paper A3 size
Colored markers (red, blue, green, yellow)
Eraser
Measuring tape 5m
⬇ PDFResources Required (Cutting List)
S/NItemQuantity
1Interior design plan sheet 7000mm x 5000mm1 sheet per Candidate
2Scale ruler (1:50 and 1:100)1 per Candidate
3Pencil HB2 pcs per Candidate
4Colored markers (red, blue, green, yellow)1 set per Candidate
5Tracing paper A3 size2 sheets per Candidate
6Eraser1 per Candidate
7Measuring tape 5m1 per Candidate
⬇ PDFAssessor Guide
Items to be EvaluatedMarks AvailableMarks ObtainedComments
TASK 1: Identification and marking of spatial elements
Wears appropriate PPE (e.g. dust mask, gloves) before starting work
(Award 1 mark for correct PPE use, 0 if none)
1
Uses scale ruler correctly to measure and interpret dimensions on the plan
(Award 1 mark each for accurate use of 1:50 and 1:100 scales)
3
Identifies and accurately marks all designated zones (living, dining, kitchen, bedrooms) on tracing paper
(Award 1 mark per correctly identified and marked zone, max 5)
5
Draws and marks circulation paths clearly with appropriate colors on tracing paper
(Award 1 mark for clear and accurate circulation path marking)
4
Marks functional areas such as storage, utilities, and service zones accurately
(Award 1 mark for each functional area correctly identified and marked)
4
Maintains neatness and clarity in all markings and annotations
(Award up to 3 marks for neatness and clarity)
3
Sub-Total20
PRODUCT CHECKLIST
All spatial elements are correctly identified and marked on tracing paper according to the plan dimensions 7000mm x 5000mm
(Award 10 marks for accurate and complete spatial element marking matching plan size)
10
Use of color coding for zones, circulation paths, and functional areas is consistent and clear
(Award 5 marks for consistent and clear color coding)
5
Annotations and labels are legible, accurate, and correspond to spatial elements
(Award 5 marks for correct and legible annotations)
5
Sub-Total20
GRAND TOTAL40
ASSESSMENT OUTCOME:   ☐ Competent    ☐ Not Yet Competent (competent if at least 50%)
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🔒Measure and scale dimensions from architectural drawings for interior designPractical 3
🔒Construct a sectional scale model illustrating spatial relationships in an interior designPractical 4
🔒Prepare scaled sketches of interior room layout 7000mm x 5000mmPractical 5
🔒Assemble a 3D Interior Model Showing Furniture Placement in a 4500mm x 3500mm RoomPractical 6
🔒Analyze and interpret symbols on interior design drawingsPractical 7
🔒Calculate Scale Ratios for Interior Space ModelsPractical 8
🔒Layout of Spatial Zoning on a Blank Interior PlanPractical 9
🔒Construct a scale elevation model of an interior design wall 1200mm wide x 1800mm highPractical 10
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Am I competent?

At the start of this chapter we promised you would be able to:

  • Choose the right measurement tools to take accurate spatial measurements.
  • Recognize and use the latest trends in spatial measurement techniques.
  • Analyze what your client needs and clearly define the project specifications.
  • Set data requirements and understand constraints based on your organization’s guidelines.
  • Identify and document all important details for spatial data collection, including deliverables and main tasks.
  • Verify spatial data to make sure it is accurate and reliable.

Tick each one you can genuinely do.

So, are you there yet?

You're competent when you can confidently do 50% or more of what this chapter promised.

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