Lineweight for cutting plane indication Should the cutting plane line be drawn at the same lineweight as object lines, or does it require a heavier emphasis?

Introduction / Context:
Cutting plane lines must attract attention so readers immediately see where a section is taken and in what direction. Lineweight hierarchy is a fundamental drafting principle that assigns visual priority to certain elements, including cutting plane indications.

Given Data / Assumptions:

• Object lines typically use a standard weight for visible edges.
• Cutting plane lines should be prominent for quick identification.
• Standards and company guides usually prescribe heavier weights for cutting planes than for object lines.

Concept / Approach:
The cutting plane line is typically drawn heavier (thicker) than object lines and accompanied by arrowheads and labels. Using the same or lighter lineweight can bury the cue within surrounding geometry, making the section source unclear. Consistent, heavier lineweight improves legibility and speeds interpretation.

Step-by-Step Solution:

Verification / Alternative check:
Review example sheets from your organization or standard references; heavier cutting plane lines are a widely adopted convention across disciplines.

Why Other Options Are Wrong:
“Correct” (same lineweight) reduces emphasis and can harm readability. “Use the lightest available lineweight” and “Match dimension lineweight” both under-emphasize the cutting plane. Restricting bold weight to “architectural drawings” is not standards-based.

Common Pitfalls:
Inconsistent lineweights across sheets, oversized arrowheads that crowd dimensions, and missing labels that make the section view hard to correlate.

Final Answer:
Incorrect