In architectural drawings, dimension terminations typically use diagonal tick marks or filled dots at the extension-line ends rather than arrowheads, which are more common in mechanical drafting. Decide whether this statement about standard architectural dimensioning practice is correct.

Difficulty: Easy

Correct Answer: Correct

Explanation:


Introduction / Context:
Architectural drawings communicate sizes and locations of walls, openings, fixtures, and site elements. While mechanical drawings commonly terminate dimensions with arrowheads, architectural practice often prefers tick marks or small dots for a clean graphic style that reads well at building scales. We evaluate whether this convention is correct and why it is used.


Given Data / Assumptions:

  • Scale is typically 1:100, 1:50, 1:200, or similar.
  • Architectural sheets prioritize clarity across large plans and elevations.
  • Dimension strings often stack along grids and building lines.


Concept / Approach:
Tick marks (commonly at 45 degrees) or filled dots reduce visual clutter when dozens of dimensions appear in series. They remain legible at reduced scales and align well with architectural lineweights. The dimension standard still requires clear extension lines, readable text, and consistent placement; only the termination glyph differs from arrows.


Step-by-Step Solution:
1) Establish extension lines from the features to be dimensioned.2) Place a dimension line offset from the object, maintaining consistent gaps.3) Terminate the dimension line with tick marks or dots (per office standard).4) Insert dimension text centered above the line; avoid crossing graphics.


Verification / Alternative check:
Many firm CAD/BIM templates ship with tick-mark styles for architectural dimensions and arrowhead styles for mechanical sheets. This separation reflects readability and tradition in each discipline.


Why Other Options Are Wrong:
“Incorrect”: Ignores widely adopted architectural conventions.“Only centerlines are ticked”: Centerlines are separate annotations; dimension terminations are independent.“Ticks only for electrical plans”: Electrical plans are part of architecture but do not uniquely own tick usage.


Common Pitfalls:
Mixing arrowheads and ticks randomly; placing ticks inside the extension lines; inconsistent tick angle or length; crowding text near tick marks.


Final Answer:
Correct

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