Technical Drawing Section View

Technical drawing tutorial doug smith memorial university of newfoundland october 18 2012.

Technical drawing section view. Sectional views reveal hidden details in a mechanical drawing. A section view is a view used on a drawing to show an area or hidden part of an object by cutting away or removing some of that object. A section view is made by passing the cutting plane normal to the viewing direction and removing the portion of an object in front of it.

Concept example example kinds of sections the sectioned and unsectioned portions are separated by a break line. Section views in drawings you create a section view in a drawing by cutting the parent view with a cutting or section line. The diagonal lines on the section drawing are used to indicate the area that has been theoretically cut.

Sectional views in engineering technical drawings. Sections normally comprise of two parts firstly the section cut indicator with identification. A half section is a view of an object showing one half of the view in section as in figure 19 and 20.

The section view can be a straight cut section or an offset section defined by a stepped section line. These views assume that a cutting plane has removed portions of the object represented by the drawing displaying the appropriate section of the interior. They are created by using a cutting plane to cut the object.

Such sections are labeled section a a section b b etc corresponding to the letter designation at the ends of the cutting plane line. The section line can also include concentric arcs. A section removed from its normal projected position in the standard arrangement of views is called a removed section.

Sections and sectional views are used to show hidden detail more clearly. The cut line is called a cutting plane and can be done in several ways. The lines are thin and are usually drawn at a 45 degree angle to the major outline of the object.