Advanced Sections
Advanced Sections
The advanced sections that will be cover are the following.
- Aligned section
- Rib and web section
- Broken section
- Removed section
- Revolved section
Aligned Section
In order to include angled elements in a section, the cutting plane may be bent so that it passes through those features.
Conventions of Revolution
Features are revolved to the projection plane, and then projected over.
Rib and Web Section
To avoid a false impression of thickness and solidity, ribs and webs are not sectioned. If the cutting plane passes crosswise through the rib or web, we include section lines.
Broken Section
Sometimes only a partial or broken out section is needed. Hidden lines are shown in the non-sectioned area of a broken section.
Removed Section
A removed section is one that is not in direct projection of the view containing the cutting plane.
Revolved Section
The cross sectional shape of an object may be shown in the longitudinal view by means of a revolved section.
Non-Sectioned Parts
It is common practice to show standard parts 'in the round' or un-sectioned.
- Nuts
- Bolts
- Rivets
- Shafts
- Screws
Thin Sections
For extremely thin parts of less than 4 mm thickness, the parts should be shown in solid black or without section lines.
- Sheet metal
- Washers
- Gaskets