Table of Contents
Section lines shown in opposite directions indicate a different part. Rule 3: All the visible edges behind the cutting plane should be shown. Rule 4: Hidden features should be omitted in all areas of a section view. Exceptions include threads and broken out sections.
Do you draw hidden lines in section views?
Section views do not include hidden lines. Any material cut when a section view is defined is hatched using section lines. There are many different styles of hatching, but the general style is evenly spaced 45° lines.
What is the purpose of drawing section views?
What is a “Section View” ? 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. The cut line is called a “cutting plane”, and can be done in several ways.
Why are hidden lines generally omitted in a sectional view?
The purpose of hidden lines is to show hidden features. If a section exposes the hidden features, no hidden lines are required. Why are some symmetrical features, like spokes and webs, revolved in the sectional view?.
How do you visualize section views?
When sketching an object or part that requires a sectional view, they are drawn by eye at an angle of approximately 45 degrees, and are spaced about 1/8” apart. Since they are used to set off a section, they must be drawn with care. It is best to use the symbol for the material being shown as a section on a sketch.
What are the rules for lines in section views?
Rules of Sectioning Rule 1: A section lined area is always completely bounded by a visible outline. Rule 2: The section lines in all areas should be parallel. Section lines shown in opposite directions indicate a different part. Rule 3: All the visible edges behind the cutting plane should be shown.
What is a hidden line?
A hidden line, also known as a hidden object line is a medium weight line, made of short dashes about 1/8” long with 1/16”gaps, to show edges, surfaces and corners which cannot be seen. Sometimes they are used to make a drawing easier to understand.
Which line is used to represent a hidden feature in a drawing?
It is standard practice to use dashes to represent any line of an object that is hidden from view.
What are the 7 types of section views?
There are a number of different types of sectional views that can be drawn. A few of the more common ones are: full sections, half sections, broken sections, rotated or revolved sections, removed sections, offset sections, and assembly sections.
What does the area filled with section lines on a section view represent?
Section lined areas represent materials that have actually been in contact with the cutting plane line.
Which of the following types of lines are used to show hidden objects or objects above or below the cutting plane?
Hidden lines: indicate areas or objects not visible on the surface, or objects hidden behind others. They are also used to show objects above the cutting plane of a floor plan, such as wall cabinets, beams, arches, etc.
Which section view is the most commonly used?
If the imaginary cutting plane passes through the entire object, splitting the drawn object in two with the interior of the object revealed, this is called a “full section.” A full section is the most widely-used sectional view.
Is it permissible to show hidden lines on some portion of a half section?
A cutting plane line indicates where the part is being Is it permissible to show hidden lines on some portion of a broken section? yes. The sectioned and non-sectioned halves of a half section are separated by a ______ line.
How do you visualize a section view in Solidworks?
To create section views: On the Objects tab, click New Cutting Plane. In the model tree, select the cut plane. Type a Name for the plane. Use the Rotate and Transform options to modify the plane’s orientation. To add an additional cutting plane, click New Cutting Plane.
How do you draw a cutting line on a plane?
Cutting plane lines are used to define section views. Choose Home tab→Drawing Views group→Cutting Plane . Click a part view. Draw the cutting plane. When you are finished drawing the cutting plane, on the ribbon, click Close Cutting Plane . Click to define the section view direction.
What is section view Autocad?
A model documentation section view is a projected view from an existing drawing view, where you use a section line to cut through the drawing view in order to reveal what is inside.
Is a type of section where the cutting plane is drawn vertically?
Sectional Front View: When an object is cut by a vertical cutting plane or Auxiliary Vertical Plane, the front view obtained is called the Sectional Front View.
What is a section cut?
‘ In reference to architectural drawing, the term section typically describes a cut through the body of a building, perpendicular to the horizon line. A section drawing is one that shows a vertical cut transecting, typically along a primary axis, an object or building.
When the cutting plane cut the entire object the section is known as?
Explanation: When the cutting plane cuts the entire object the section is known as a full section. This method of sectioning is mostly used in sectioning work. It gives the total object details in one section.
Do isometric views have hidden lines?
Usually only the visible surfaces of an object are drawn in isometric, with hidden lines left out. Although this is considered the preferred practice, there are always times when hidden lines are needed to clarify very complex isometric drawings.
What are the three hidden views of isometric?
The term “isometric” is often mistakenly used to refer to axonometric projections, generally. There are, however, actually three types of axonometric projections: isometric, dimetric and oblique.
What is the purpose of hidden lines and centerlines?
Hidden lines show edges of details that are not visible from the point of view shown in the drawing. Center lines define the center of arcs, circles, or symmetrical parts.
When Should hidden lines be used?
Hidden lines in a drawing represent the edges where surfaces meet but are not directly visible. Hidden lines are omitted from pictorial drawings unless they are needed to make the drawing clear. Figure 3.46 shows a case in which hidden lines are needed because a projecting part cannot be clearly shown without them.
What is the purpose of a removed section view?
Removed section views show slices of the model at selected locations along a drawing view.
