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Measurement Skills for Floor Plans

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Measurement Skills for Floor Plans

Floor plan with measuring tools

📚 Help Sheet - Floor Plan Measurement Guide

🔢 Units of Measurement

Converting units:

• 1 metre (m) = 100 centimetres (cm) = 1000 millimetres (mm)

• To convert cm to m: divide by 100

• To convert mm to m: divide by 1000

📏 Reading Scales

Scale format: 1:50 means 1 cm on the plan = 50 cm in real life

To find actual size: Measure on plan × scale number

Example: 1:100 scale, 3 cm on plan = 3 × 100 = 300 cm = 3 m actual

📐 Key Formulas

Perimeter (rectangle): P = 2 × (length + width)

Area (rectangle): A = length × width

Area (square): A = side × side

🏠 Common Floor Plan Symbols

━━ Wall (thick black line)

⌐ ⌐ Window (gap in wall)

Door swing (arc)

═══ Sliding door (parallel lines)

💡 Tips for Success

• Always check your units - are you working in cm, m, or mm?

• Show your working clearly for scale calculations

• Double-check conversions between cm and metres

📐 Part 1: Scale and Measurement

1. A floor plan has a scale of 1:100. If a room measures 4 cm on the plan, what is the actual length in metres?

4 metres

40 metres

0.4 metres

400 metres

2. On a floor plan with scale 1:50, a kitchen is 6 cm × 8 cm. Calculate the actual dimensions:

Length: _________ metres Width: _________ metres

3. Which units are most appropriate for measuring room dimensions on an actual floor plan? (Select all that apply)

Millimetres

Centimetres

Metres

Kilometres

4. A bedroom on a 1:75 scale plan measures 5.2 cm by 4.8 cm. Show your working to find the actual area in square metres:

🏠 Part 2: Floor Plan Analysis

5. Match each floor plan symbol to its meaning:
Double parallel lines
Rectangle with X
Arc symbol
Thick black line
Window
Door swing
Wall
Sliding door
6. A rectangular living room measures 6.5m × 4.2m. Calculate:

a) Perimeter: _________________ metres

b) Area: _________________ square metres

7. Explain why accurate measurements are crucial when creating floor plans for builders:

✏️ Part 3: Design Challenge

8. Design a simple rectangular bedroom (4m × 3m) on the grid below using a scale of 1:50. Include a door and window using correct symbols:
9. A house has three rooms with the following areas: Kitchen 15m², Lounge 28m², Bedroom 12m². If carpet costs $45 per square metre, calculate the total cost to carpet all three rooms:
10. List three important measurements you would need to include when drawing a bathroom floor plan:

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