Section Views

• Sections are used to clarify interior construction that cannot be clearly described by hidden lines in exterior views.
• Section views are obtained by an imaginary cutting plane passed through the object perpendicular to the line of sight.
• The portion of the object between the cutting plane and the observer is assumed to be removed and section lines indicate the exposed surfaces.
• Hidden lines behind the cutting plane are omitted in section views.
• The cut surfaces are indicated using cross hatching

Section Views

Cutting Plane Lines

Cutting Plane Lines

Hatch Styles

Full Section View

Full Section View Process

Hidden Lines

Edges

Multiple Sections

Half Section

Used to show features of 1/2 the part (usually these parts have circular symmetry)

Offset Section

Used to include features not found on a single plane but on parallel planes.

Broken Views

Shows only a small portion of the part's interior

Conventional Breaks

Conventional Break Symbols

Revolved View

Show the internal features of a part in one of the standard views.

Removed View

Shows internal features along the length of a part

Multiple Removed Views

Aligned Views

Used to show features not on a single cutting plane, nor parallel cutting planes, but on cutting planes that intersect through a single axis

Ribs, Webs, Lugs, Flanges

Webs

Aligned Lugs

Aligned Ribs

Aligned Spokes

Alternate Web Section

Sectioned Assemblies

Standard Parts

Thin Parts

Section Example