Sectional Views & Auxiliary Views Flashcards
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Read the first 7 Sectional Views & Auxiliary Views flashcards as text
What is the primary purpose of a full sectional view in technical drafting?
Answer: To reveal interior features by passing a cutting plane through the entire object
A full section passes a cutting plane completely through the object to expose interior details that would otherwise appear as confusing hidden lines.
What do section lines (cross-hatching) indicate in a sectional view?
Answer: Solid material that has been cut through by the cutting plane
Section lines indicate the solid material actually cut by the cutting plane, distinguishing it from open interior spaces visible behind the cut.
In a half-section view, how is the object divided to create the view?
Answer: Two cutting planes at 90° reveal one quarter in section and show three-quarters as exterior view
A half-section uses two cutting planes at 90° so one quarter of the object appears in section while the remaining three-quarters retains its exterior view.
What type of line is used to represent the cutting plane on a drawing?
Answer: A thick chain line (long-short-long dash) with arrows showing the viewing direction
The cutting plane line is a thick chain line with arrows at its ends indicating the direction from which the resulting section is viewed.
What is the primary purpose of an auxiliary view in engineering drawing?
Answer: To show the true size and shape of an inclined or oblique surface
Auxiliary views project perpendicular to an inclined surface so its true dimensions are preserved, avoiding the foreshortening seen in standard principal views.
What is a broken-out section?
Answer: A partial section that uses an irregular break line to locally expose an interior feature
A broken-out section uses a freehand break line to remove only a small portion of the exterior, exposing a specific interior feature without committing to a full or half section.
Which ANSI/ASME standard governs multiview and sectional view drawings?
Answer: ANSI/ASME Y14.3
ANSI/ASME Y14.3 specifically covers multiview and sectional view drawings, establishing requirements for cutting planes, section lines, and auxiliary views.