1. Mechanical and Aerospace Engineering Dept., SJSU
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 cross-sectional view. This view is called a section view.
Ken Youssefi
Mechanical and Aerospace Engineering Dept., SJSU

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

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

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

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

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

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

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

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

10. Mechanical and Aerospace Engineering Dept., SJSU
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

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

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

13. 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

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