Introduction / Context:
A section view is produced by cutting through a part to expose interior details. The statement claims that section views cannot replace any of the normal orthographic views. In practice, drawings aim for clarity and sufficiency, not a fixed count of views. If a section view communicates the necessary information better than a standard exterior view, it can legitimately replace that view.
Given Data / Assumptions:
- Engineering drawings must fully define form, fit, and function.
- Views are selected for clarity; unnecessary duplication is discouraged.
- Section views follow established conventions (cutting plane, arrows, section lining).
Concept / Approach:
Standards allow any combination of principal, auxiliary, detail, and sectional views that clearly communicate design intent. A section view often clarifies internal cavities, ribs, and passages better than exterior silhouettes. Therefore, a section view may replace one of the typical views if it improves communication and the drawing still contains all required information.
Step-by-Step Solution:
Determine what interior information is required (holes, pockets, ribs, bosses).Choose a cutting plane that reveals those features most clearly.Create the sectional view and verify it conveys all necessary dimensions and notes.Remove redundant external views if the sectioned view provides the needed clarity and completeness.
Verification / Alternative check:
Perform a design review with manufacturing/inspection; if they can unambiguously interpret the part using the section view and remaining views, replacement is valid.
Why Other Options Are Wrong:
Correct: Claims a universal prohibition that does not exist; it depends on clarity and completeness.Only if printed at 1:1 scale / Only for sheet-metal parts: Scale or material type does not determine whether a section view can replace a standard view.
Common Pitfalls:
Retaining redundant views that clutter the sheet.Failing to dimension features in the replacing section view, leading to missing information.
Final Answer:
Incorrect
Discussion & Comments