Section Views Orthographic views showing all hidden lines

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Section Views Orthographic views showing all hidden lines may not be clear enough to

Section Views Orthographic views showing all hidden lines may not be clear enough to describe an object’s internal details. This shortcoming can be overcome by imagining that part of the object has been cut away and shown in a crosssectional view. This view is called a section view. Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 1

Type of Section Views • • • Ken Youssefi Full section view Offset section

Type of Section Views • • • Ken Youssefi Full section view Offset section view (multiple offset views) Half section view Broken section view Aligned and Revolved section views Removed view Mechanical and Aerospace Engineering Dept. , SJSU 2

Section View – Full Section Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU

Section View – Full Section Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 3

Section View – Offset Section Offset cutting plane Ken Youssefi Mechanical and Aerospace Engineering

Section View – Offset Section Offset cutting plane Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 4

Section View – Multiple Offset Sections Ken Youssefi Mechanical and Aerospace Engineering Dept. ,

Section View – Multiple Offset Sections Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 5

Section View – Half Section Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU

Section View – Half Section Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 6

Section View – Broken Section Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU

Section View – Broken Section Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 7

Section View – Aligned & Revolved Section Ken Youssefi Mechanical and Aerospace Engineering Dept.

Section View – Aligned & Revolved Section Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 8

Section View Removed sections placed outside of the view Hatch lines Ken Youssefi Mechanical

Section View Removed sections placed outside of the view Hatch lines Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 9

Section View – review • • • All visible edges and contours behind the

Section View – review • • • All visible edges and contours behind the cutting plane should be shown. Hidden lines should be omitted in section views. A section view should always be bounded by a visible outline. There should be no lines in the hatched area. Section lines should be in the same direction. Use standard section lines (hatch) to show materials. Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 10

Breaks and Sectioning Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 11

Breaks and Sectioning Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 11

ANSI Standard Section Lines for Various Materials ANSI-31 ANSI-133 American National Standards Institute Ken

ANSI Standard Section Lines for Various Materials ANSI-31 ANSI-133 American National Standards Institute Ken Youssefi ANSI-134 Mechanical and Aerospace Engineering Dept. , SJSU 12

Architectural Drawing Crosshatching patterns for various building materials that go into the construction of

Architectural Drawing Crosshatching patterns for various building materials that go into the construction of foundation, roof details, or wall sections. Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 13

Auto. CAD Crosshatching Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 14

Auto. CAD Crosshatching Ken Youssefi Mechanical and Aerospace Engineering Dept. , SJSU 14