Architect’s scale vs. engineer’s scale – inch divisions An architect’s scale is divided into tenths (0.1) of an inch. Evaluate this statement.

Difficulty: Easy

Correct Answer: Incorrect

Explanation:


Introduction / Context:
Understanding the difference between architect’s and engineer’s scales avoids reading errors on drawings. Architect’s scales use fractional-inch relationships to feet; engineer’s scales use decimal subdivisions of an inch.



Given Data / Assumptions:

  • Architect’s scale: common graduations like 1/8 in = 1 ft, 1/4 in = 1 ft, 1/2 in = 1 ft, etc.
  • Engineer’s scale: decimal divisions such as 10, 20, 30, 40, 50, 60 divisions per inch.
  • Claim states architect’s scale is in tenths of an inch.


Concept / Approach:
The statement confuses the two tools. The architect’s scale is not divided in tenths; that is the hallmark of the engineer’s scale. Architect’s scales are arranged to read feet and fractions thereof conveniently from fractional-inch drawings.



Step-by-Step Solution:

Identify the task: read building dimensions from a plan with fractional-inch scale.Use the architect’s scale matching the drawing ratio (e.g., 1/4 in = 1 ft).Observe that markings represent feet/inches via fractional-inch conversions, not decimal tenths.Therefore, the claim about tenths belongs to engineer’s scale, not architect’s.


Verification / Alternative check:
Inspect a physical architect’s and engineer’s scale to see their graduation schemes; all reputable drafting references make this distinction.



Why Other Options Are Wrong:
“Correct” would imply architect’s scales are decimalized; they are not.



Common Pitfalls:
Using the wrong scale for a given drawing; mixing up imperial fractional and decimal conventions; misreading small graduations.



Final Answer:
Incorrect

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