# What is the purpose of construction lines and object lines?

## What is the purpose of construction lines and object lines?

Construction lines are used to guide where you will draw your object lines to form lines and shapes. Object lines are what compose the shape/figure.

## What are the benefits of using a multiview sketch to communicate a design?

Answer Expert Verified A Multiview sketch shows two or three views of an object. Multiview sketch gives the shape description of the object. It also serves as the main form of communication between manufacturers and sketchers.

What is the purpose of hidden lines in construction drawings?

The purpose of hidden lines is to show where other faces exist that are not seen. Center lines show the diameter of circles in a sketch.

### How do you determine the orientation of orthographic projections in a multiview drawing?

How do you determine the orientation of orthographic projections in a multiview drawing? drawing by where the drawing is positioned, whether its the front, back, top, etc. 2.

### What are the most common views on a multiview drawing?

Although six different sides can be drawn, usually three views of a drawing give enough information to make a three-dimensional object. These views are known as front view, top view and end view. Other names for these views include plan, elevation and section.

What are the three principal views of an object?

Views are normally selected so that most of the features will be visible in the three principal views. The front, top, and left or right side views are most commonly drawn. Many objects are quite complex, and the three principal views may not best present the geometry of the part.

## What are the 6 principal views of an object?

What are the six principal views of an object? Front, top, right side, left side, rear, and bottom.

## What are the five principal views of an object?

What are the six possible views of an object?

In orthographic projection there are six possible views of an object, because all objects have six sides – front, top, bottom, rear, right side, and left side.

### What are the different types of projection?

This group of map projections can be classified into three types: Gnomonic projection, Stereographic projection and Orthographic projection.

• Gnomonic projection. The Gnomonic projection has its origin of light at the center of the globe.
• Stereographic projection.
• Orthographic projection.

### What is 3rd Angle Projection?

3rd Angle project is where the 3D object is seen to be in the 3rd quadrant. It is positioned below and behind the viewing planes, the planes are transparent, and each view is pulled onto the plane closest to it. The front plane of projection is seen to be between the observer and the object.

Is isometric a pictorial drawing?

Isometric drawing is the first subcategory of pictorial drawing. Isometric drawings project all sides of a three-dimensional object in a non-foreshortened way. It is based on 30° angles and the same scale is used for all axes.

## What are the 4 types of pictorial drawing?

There are many types of pictorial drawings and these include isometric, oblique, axonometric and planometrics and the four drawings figures 164 – 167 illustrate the differences between them. Of these, isometric drawings are the most common.

## What are the 3 pictorial drawings?

The three main types of pictorial drawings that are extensively used in architectural presentations are perspective drawings, isometric drawings, and oblique drawings.

Is Cavalier a pictorial drawing?

2. Oblique projection. Oblique projection is probably the simplest method of producing a pictorial drawing because surfaces are directly in front of the viewer will look very similar to the front view in an orthogonal drawing. (Diagram 1.1) These are Cavalier and Cabinet projection.

### What are the advantages of pictorial drawing?

Benefits

• Very detailed (Easier for the manufacturer to understand.
• Perpendicular lines.
• Shows all 3 sides of the drawing, top, side and front.
• Can have more than 3 views to show viewable angles on complex designs.
• Used by manufacturers in the UK and USA.
• Doesn’t take as a long to draw the different views as there is less.

### What are the 3 main categories of sketching?

There were 3 main types of sketches:

• Croquis. A croquis was intended to remind the artist of some person or scene he wished to remember in a more permanent form – they were not necessarily for a finished product.
• Portrait Sketch.

Is axonometric a pictorial drawing?

Axonometric projection is a type of orthographic projection used for creating a pictorial drawing of an object, where the object is rotated around one or more of its axes to reveal multiple sides.

## Is perspective a pictorial drawing?

In making a pictorial drawing, the viewing direction that shows the object and its details to the best advantage is chosen. Perspective drawings provide the most realistic, and usually the most pleasing, likeness when compared with other types of pictorial views.

## Which projection has only one view?

Explanation: Orthographic projection is the representation of two or more views on the mutual perpendicular projection planes. But for oblique projection, the object is viewed in only one view.

# What is the purpose of construction lines and object lines?

## What is the purpose of construction lines and object lines?

The purpose of construction lines is to give you an outline of what you are about to draw. Object lines are used for outlining the shape and giving it its main features.

## What are the benefits of using a multiview sketch to communicate a design?

5.3 ADVANTAGES OF MULTIVIEW DRAWINGSThe advantage of multiview drawingsover pictorial drawings is that multiview drawings shows the true size and shapeof the various features of the object, whereas pictorials distort true dimensions which are critical in manufacturing and construction.

What is the purpose of hidden lines in construction drawings?

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. Often they are omitted in an isometric view.

What is a multiview sketch?

A multiview drawing is one that shows two or more two-dimensional views of a three- dimensional object. Multiview drawings provide the shape. description of an object. When combined. with dimensions, multiview drawings serve as the main form of communication between designers and manufacturers.

### Why it is called multiview drawing?

In technical drawing and computer graphics, a multiview projection is a technique of illustration by which a standardized series of orthographic two-dimensional pictures are constructed to represent the form of a three-dimensional object.

### How many dimensions can you view at one time for any pictorial drawing?

three

What are the 3 planes of projection?

[FIGURE 3-2] Projections of the point are made onto three of the surfaces that make up the box: the top or “H” (horizontal) plane, the front or “F” (frontal) plane, and the right side or “P” (profile) plane.

What are the 6 principal views of an object?

surfaces of the object positioned so that they are parallel to the sides of the box, six sides of the box become projection planes, showing the six views – front, top, left, right, bottom and rear.12

#### When making a multiview drawing of an object you need to draw?

When making a multiview drawing of an object, you need to draw how many views? Only as many views as are needed to describe the shape. IN MOST CASES, you can completely describe the shape and size of an object by drawing how many views? Two or three views.

#### What type of sketch is used to draw an object with very little thickness?

Drafting I Unit 3.00_A Apply Sketching Techniques

Object lines are indicated by Thick, solid lines.
Hidden edged are indicated by: Uniform 1/8″ long dashes.
The LEFT SIDE view consists of Depth and height.
What type of sketch is typically used for an object with very little thickness? Single-view

Which pictorial sketch is the most realistic?

perspective sketch

When making an orthographic drawing the thickest lines should be the?

center lines

## What is another term for orthographic drawing?

Orthographic projection (sometimes referred to as orthogonal projection, used to be called analemma) is a means of representing three-dimensional objects in two dimensions.

## What is the order of precedence of lines in a drawing?

Precedence of Lines Lines are shown on the views in a prescribed order of precedence. A solid line (object or continuous) takes precedence over a hidden line, and a hidden line takes precedence over a centerline.10

What is an advantage of a 3D model as compared to multiview drawings?

An advantage of 3D modeling as compared to multi-view drawing is: The 3D model increases an individual’s ability to understand the object’s complete shape.

Which figure represents the best example of drawing center lines?

005.01 Multiview Drawing Activity

A B
Where is the HIDDEN LINE drawn INCORRECTLY in the figure?, B
Which is the BEST example of drawing CENTER lines?, D
Which is a CENTER LINE?, B
Line AB in figure is a/an:, Miter line.

### What is another name for size description?

Drafting I – Dimensioning rules

Another name for SIZE DESCRIPTION is: Dimensioning
A thin, solid line extending from a note and terminated with an arrowhead is a/an: Leader
Current dimensioning practices require the DIAMETER symbol be: A circle with a slash extending through it

### Which CAD feature adjusts the amount that the crosshairs jump when you move the mouse?

Cards

Term What is the diameter of a R 1 1/2 circle? a. 41278 b. 41337 c. 3 d. 3.25 Definition c
Term to “SNAP” to the middle of a line, use the: Definition Midpoint Snap
Term Which CAD feature adjusts the amount that the crosshairs, “jump” when you move the mouse? Definition Snap

What is the best method for centering a symmetrical one view drawing?

003.03 Basic Drafting Skills Activity

A B
Use the corners of the paper (or work space) to draw diagonals What is the BEST method for centering a SYMMETRICAL, one-view drawing?
True True or False: The visible (object) line is thicker than a Center line.
Lean the compass What should be done when drawing circles with a compass?

Which is the best placement of the dimension?

006.02 Basic Dimensioning Skills Activity

A B
Which is the BEST example of dimensioning the object?, A
Which is the BEST placement of the dimension?, B
What is the size and quantity of the smallest sized hole(s)?, Ø5, 12
What is the size of the largest sized hole?, Ø10

Lock the layer

#### What CAD command allows you to remove portions of lines?

Trim command

Which CAD command fills an area with a non associative pattern?

arc

When the command line prompts the user for the start end radius the user is most likely trying to draw a an?

When the command line prompts you for the “Start, End, Radius” you are probably trying to draw a/an: Arc. When using CAD to draw a 45 degree lines that is 3 units long, you should input: @3<45.

## Which three dimensions do all objects have?

In geometry, a three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

## Which CAD command would most easily create the figures provided?

Drafting I – 2D CAD commands

A B
Which CAD commandwould most easily create this figure?, Mirror
The figure is an example of which CAD command?, Polyline
The CAD command PAN allows you to: Move the drawing around so that a different part of the drawing appears on the screen.

What zoom command remembers the last five zoomed views?

What ZOOM command remembers the last five zoomed views? A. Zoom, Window.12

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