Introduction to EngineeringSection Views - 1

AgendaWhy section views are neededTypes of section views

Reference Bertoline, Chapter 3, Sections 3.1-3.4

Section views are used when important hidden details are in the interior of an object. These details appear as hidden lines in one of the orthographic principal views; therefore, their shapes are not very well described by pure orthographic projection.

Section Views

Types Of Section Views

Full sectionsHalf sectionsOffset sectionsBroken-out sectionsRevolved sectionsRemoved sections

Cutting Plane

Section views show how an object would look if a cutting plane (or saw) cut through the object and the material in front of the cutting plane is removed

Figure 3.3

Section Lines

Section lines (crosshatching) are used to show where the cutting plane passed through solid material

Figure 3.9

Section Lines

Section lines can be used to show different types of materials or different parts of the same material.

Refer to text for a complete list (Figure 3.8)

Full Section View

In a full section view, the cutting plane cuts across the entire object

Note that hidden lines become visible in a section view

Full Section View

Show cutting plane in the top viewMake a full section on the front view

Full Section View

Note how the cutting plane is drawn and how the crosshatching lines mark the surfaces of material cut by the cutting plane. No hidden lines on the section view, if possible.Note: Interior lines behind cutting plane became visible.

Half Section View

The cutting planes do not cut all the way through to the object. They cut only half way, stopping at the centerline.

Half Section View

Half Section used mainly for symmetric objects

Video #17Drawing Full and Half Sections

Assignment #32: Full & Half Sections Handout

Read Bertoline, Chapter #3, Sections 3.1-3.4

Assignment #32 (Start in Class) Follow the instructions to make full and half

section views on the handout provided. On a piece of isometric grid paper, draw an

isometric view of a full section of the object in Assignment #32.