Question

common scales used for floor plans are

select one:
a. 1:20 or 2:1
b. 1:50 or 1:100
c. 1:200 or 1:500
d. 1:5 or 1:2

Explanation:

Analyze floor plan scale requirements

In Architectural Drawing Reading, selecting an appropriate scale is crucial for representing building layouts clearly on standard paper sizes. A floor plan must show room arrangements, wall thicknesses, and door swings in sufficient detail while fitting on a manageable sheet.

Evaluate standard metric scales

Let's analyze the common metric scales used in construction documentation:

• \(1:5\) or \(1:10\) are highly detailed scales, typically reserved for construction details, joinery, or component drawings.
• \(1:20\) is used for detailed room layouts (like bathrooms or kitchens) or larger construction sections.
• \(1:50\) and \(1:100\) are the standard industry scales for residential and commercial floor plans. They offer the perfect balance of detail and overall layout visibility.
• \(1:200\) and \(1:500\) are typically used for site plans, block plans, or large-scale urban planning layouts.

Match with options

Comparing our analysis to the given choices:

• Option (a) \(1:20\) or \(2:1\) contains an enlargement scale (\(2:1\)), which is not used for floor plans.
• Option (b) \(1:50\) or \(1:100\) represents the standard scales for architectural floor plans.
• Option (c) \(1:200\) or \(1:500\) represents site plan scales.
• Option (d) \(1:5\) or \(1:2\) represents detail drawing scales.

Answer:

• a. 1:20 or 2:1
• b. 1:50 or 1:100 (Correct answer)
• c. 1:200 or 1:500
• d. 1:5 or 1:2