Units used in architectural dimensioning In building plans and elevations prepared to common North American conventions, architectural dimensions are typically expressed in which units?

Introduction / Context:
Unit conventions vary by discipline and region. Mechanical drawings often use millimeters, while North American architectural drawings customarily use feet and inches. Understanding this prevents errors in interpretation and construction.

Given Data / Assumptions:

• The context is architectural drawings in North America.
• Dimensions describe building lengths, heights, and locations.
• Clarity for trades is a priority.

Concept / Approach:
Architectural dimensioning commonly uses feet and inches with punctuation and tick marks for clarity (for example, 9'-6' for nine feet six inches). Decimal feet or metric may be used in some jurisdictions, but the traditional standard remains feet and inches.

Step-by-Step Solution:
Identify the regional convention requested.Select the composite unit system used by architecture in the region.Choose “Feet and inches.”

Verification / Alternative check:
Building code documents and architectural drafting standards illustrate feet-inch notation on plans, elevations, and sections.

Why Other Options Are Wrong:

• Even numbers: not a unit system.
• Feet only / inches only: insufficient precision or awkwardly large numbers for typical scales.

Common Pitfalls:
Mixing mechanical (decimal) and architectural (feet-inch) conventions on the same sheet; always maintain consistent units and annotation styles.

Final Answer:
Feet and inches