Compare tolerance expectations: Architectural drawings generally allow looser construction tolerances than precision mechanical drawings, which demand tighter fits. Decide whether the statement “Architectural tolerances are just as close as mechanical tolerances” is correct.

Introduction / Context:
Tolerances specify allowable variation. Mechanical components (bearings, shafts, threads) often require micrometer-level control for interchangeability. Buildings, by contrast, are assembled on site with variable conditions and thus accept looser tolerances while still meeting performance and code. We assess the claim that architectural tolerances are “just as close” as mechanical tolerances.

Given Data / Assumptions:

• Mechanical parts are produced with machine tools and gauges.
• Architectural work involves concrete, masonry, framing, and field installation.
• Fit and function needs differ drastically between a gearbox and a wall.

Concept / Approach:
Mechanical fits use class systems and microns or thousandths of an inch; architectural tolerances are typically in millimeters or fractions of an inch at room or wall scale. Precision is applied where necessary (e.g., elevator rails, curtain wall fabrication), but overall building layout accepts larger variances.

Step-by-Step Solution:
1) Identify component function and required precision.2) Apply appropriate standard (mechanical fits vs architectural tolerances).3) Detail interfaces where tight control is critical (e.g., façade anchors).4) Allow reasonable field tolerances elsewhere.

Verification / Alternative check:
Specification sections for architectural work set tolerances at practical levels (e.g., plumbness, flatness), far looser than bearing fits or threaded class tolerances.

Why Other Options Are Wrong:
“Correct”: Misrepresents fundamental differences in manufacturing vs construction.“Equal only for glazing” / “Equal only for elevators”: Some subassemblies are tighter, but the global claim remains false.

Common Pitfalls:
Using machine-shop tolerances on site details; omitting shim spaces or adjustable anchors at interfaces between trades.

Final Answer:
Incorrect