Which angle projection is used in india

Third angle projection is widely used in the United States. In the third angle projection, the projection planes come between the object and observer.

The plane of projection is taken as transparent in the 3rd angle projection. Out of these six views, three views Front, Top, Right are important and most of the drawings usually have these three views. First angle projection and third angle projection can be broadly differentiate based on a couple of criteria as mentioned below.

In the first angle projection, the object is placed between the object and projection planes. In the third angle projection, the object is placed behind the projection planes. In the first angle projection, the projection planes are at the behind and bottom of the object. In the case of third angle projection, projection planes are front and top of the object. The only way to figure it out is by looking at the projection symbol.

The view Placement differs in 1st angle projection and 3rd angle projection due to the different positions of projection planes. But before that, we should know the rule of Orthographic Projection The Orthographic Projection states that you have to virtually rotate the horizontal plane clockwise to project the views in a 2D drawing. In the first angle projection, the front view is placed above the unfolded line and the top view is placed below.

When view are drawn in their relative position Top view comes below Front view, Right side view drawn to the left side elevation. A First Angle Projection drawing is identified by the first angle projection symbol. The angle of projection symbol typically appears in angle of projection block near to Title block. Mechanical Basics Third Angle Projection. Remember Me. Saturday, November 13, First Angle Projection.

This means that the vertical plane is behind the object and the horizontal plane is underneath the object. First angle projection method is used in Europe, India, Canada and the rest of world as a default projection system. Third angle projection is a method of creating a 2D drawing of a 3D object. In third angle, the object is placed in the third quadrant.

This means that the plane of projection is between the observer and the object. Similarly when the object is placed in the 4th quadrant both the top and front view will overlap. Therefore fourth angle projection is also not used. To sum up, Because of the overlapping of front and top views 2nd and 4th angle projections are not used.

First and third angle projection systems are recommended for orthographic projections. We will keep adding more information on why 2nd and 4th angle projection systems are not used to create engineering drawings.