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Sectional Views. Sectional Views. Sectional views show internal details without the need for hidden lines. Objects are imagined to be cut apart along the cutting-plane line.
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Sectional Views • Sectional views show internal details without the need for hidden lines. • Objects are imagined to be cut apart along the cutting-plane line. • Along the cutting plane, the part of the object that is solid (cut by the cutting plane) is shown with section lines (thin lines drawn at 45°). • In a sectional view, many hidden lines are replaced by object lines because the internal surfaces are exposed when the object is imagined to be cut open.
Sectional Views • The section-lining symbol denotes the material of the object. • Ribs, webs, and spokes are not shown with section lining. • Symmetrical features like spokes and webs are revolved so the sectional view appears symmetrical. • Conventional breaks are used to represent various objects in shortened form.
