autocad 2d_i module 6: sectional views. module objectives 1.differentiate the different types of...
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AutoCAD 2D_I
Module 6: Sectional Views
Module Objectives
1. Differentiate the different types of sectional views.
2. Create sectional views drawing from a given isometric or oblique drawings.
3. Define hatching and explains it’s function
Introduction to Sectional Views
Introduction to Sectional Views
A sectional view is that view seen beyond an imaginary plane passing through an object at right angles to the direction of sight.
Sectional views are used to show the interior construction or details of hidden features that can not be shown clearly by outside views.
Introduction to Sectional Views
The cutting plane on which a section has been taken is indicated by a heavy dash line. Arrow heads at the ends of the cutting plane lines are used to indicate the direction in which the sections are viewed.
See the following figures
Types of sectional views
Types of sectional views
Half Section
Rib and Web Sections
Full Section
Non-sectioned parts
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Hatching
Hatching
Hatching lines are thin lines and should preferably be inclining at 45 degrees. They should be evenly spaced.
Hatching
If there are two or more adjacent sectioned parts, the hatching lines should either be of different spacing or different direction. See the following figures.However, hatching pattern should be the same for separate areas of a single object.
Examples on Sectioning
Examples on Sectioning
Example 1
Example 4Example 3
Example 2
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Worksheets and class Activities
Worksheets and Homework
Worksheet 1
HomeworkWorksheet 3
Worksheet 2
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Worksheet 2
Match the correct section view with the corresponding drawing. Write the correct sectional view letter beside the drawing number in the space provided.
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Worksheet 3
Use an A3 size drawing sheet to redraw the following views:1. The top view.2. The complete sectional front view at A-A.3. The side view.
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Homework
Using the THIRD angle projection, draw the following ORTHOGRAPHICviews of component shown below.1. A complete sectional side view from arrow S.2. A front view from arrow F.3. A plan view from arrow P
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The End