Section Views Orthographic views showing all hidden lines

Section Views Orthographic views showing all hidden lines may not be clear enough to describe an objects internal details. This shortcoming can be overcome by imagining that part of the object has been cut away and shown in a cross-sectional 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 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 3 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., SJSU 5 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

7 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 and Aerospace Engineering Dept., SJSU 9

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 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 foundation, roof details, or wall sections. Ken Youssefi Mechanical and Aerospace Engineering Dept., SJSU

13 AutoCAD Crosshatching Ken Youssefi Mechanical and Aerospace Engineering Dept., SJSU 14