# How Do You Start An Orthographic Drawing?

## How many views do an orthographic drawing have?

three viewsAlthough 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 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 3 regular views of an object?

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 6 views of orthographic drawing?

views that are produced by six mutually perpendicular planes of projection. 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.

## What are the two types of orthographic projections?

First angle projections and third angle projections are the two main types of orthographic drawing, also referred to as ‘working drawings’. The difference between first and third angle projection is in the position of the plan, front and side views.

## What is orthographic projection and how it is obtained?

Orthographic projection, common method of representing three-dimensional objects, usually by three two-dimensional drawings in each of which the object is viewed along parallel lines that are perpendicular to the plane of the drawing.

## What are the types of orthographic projections?

There are four types of projection but out of that only first angle projection and third angle projections are used.First angle projection.Second angle projection.Third angle projection.Fourth angle 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.

## What are the 6 views of an object?

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

## What is orthographic projection used for?

An orthographic projection is a way of representing a 3D object by using several 2D views of the object. Orthographic drawings are also known as multiviews. The most commonly used views are top, front, and right side.

## What do orthographic drawings show?

An orthographic drawing represents a three-dimensional object using several two-dimensional views of the object. It is also known as an orthographic projection. For example, you can see in this image the front, top and side views of an aircraft.

## What are the advantages of orthographic drawing?

Orthographic Projection: The advantages of using orthographic are: They can show hidden detail and all connecting parts. They can show all dimensions necessary for manufacture. They can be annotated to display material and finishes.

## What is the 1st angle projection?

First angle projection is a method of creating a 2D drawing of a 3D object. It is mainly used in Europe and Asia and has not been officially used in Australia for many years. In Australia, third angle projection is the preferred method of orthographic projection. Note the symbol for first angle orthographic projection.

## What is 1st angle and 3rd angle?

To get the first angle projection, the object is placed in the first quadrant meaning it’s placed between the plane of projection and the observer. For the third angle projection, the object is placed below and behind the viewing planes meaning the plane of projection is between the observer and the object.

## What is the most important view in an orthographic drawing?

The 3 main views used in orthographic projection/drawing are the Front, Side, and Plan (Top) view. With only these 3 views, you can already have a very clear idea of how the object looks, and you can detail it quite well if you try to build a 3D version of it.

## Which lines on a drawing should be the thickest?

Here, the typical rule is the closer the object, the darker the line; the further away, the lighter the line. This is because read thicker, heavier lines as being closest to us, whereas lighter lines recede into the background.

## What are projection lines?

Projection lines are extensions of lines that assist in 2D drawing. … For example, in a drawing, you can use projection lines on an auxiliary view to enable creation of additional views with proper alignment and size.