Orthographic Projection - Engineering drawing - Technical drawing

Orthographic projection is a method of representing three–dimensional objects in two dimensions.
It is generally used by
Engineers, designers, architects, and technical artists to help a manufacturer understand the specifics of a product that needs to be created commonly use it.

There are 2 types of orthographic projections
(1) First angle method of Projections and
(2) Third angle method of Projections.

What is the difference between the 1st angle and 3rd angle method of Projections?

The difference between the first and third angle projection is in the position of the Top, Front and Side views.



Why we can't use the 2nd and 4th angle projection?


Note: Overlapping projection views creates confusion in the drawing. Therefore, the Second angle method of projection and Fourth angle method of the projection system are not used.



The Third angle is mainly used by the USA and CANADA and Entire EUROPE and Rest of the world use First angle method of projection

Some people also say orthogonal Projections.



Advantages of using orthographic
(1) You can show hidden detail and all connecting parts.
(2) You can show all dimensions necessary for manufacture.

Limitations.
Orthographic drawings do not show depth or realistic views.
A single-view orthographic drawing represents every object as having only two dimensions.

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.

Typically, an orthographic projection drawing consists of three different views: a front view, a top view, and a side view.

Occasionally, more views are used for clarity.





#Technicaldrawing #Engineeringdrawing #Orthographic

[VikingAce]

I havenot studied this subjects but i hav tried doing this in first attempt i got right answer

[Resh]

Sir can u plzzz let me know what type of scales u r using like few r like in triangle shape and all na

[HussamDugol]

Please can you tell us how could you construct this figure

[guruprasadkulkarni]

not understood the first dotted line in side view

[tobidowo]

is there a video where you did the isometric drawing

[ambikalandge]

Sir aapne distance Kya liya box ka total vertical and horizontal??

[bilalabdulla]

is there any difference between right side and left side i mean if you draw left side instead right side there will be any problem?

[suhailamoha]

please their is any vedio of how to draw it in 3d like it`s in the image??

[tejaskadam]

If the sectional plane is passing through the symmetry of the object then in sectional front view, WILL THE PART JOINING THE CYLINDERICAL AND BASE BE HATCHED

[AditiHaryan]

121.5 is how ? I didn't understand

[aswanthek]

which pencils are using for this drawing . Please send a reply

[donaldmajani-kvkj]

Its possible to draw isometric of that diagram

[kelvinmwangi]

Great job you fixed it thank you very much

[aliemad]

excellent video, can u please make a video on how can we project from front view to top view and from these 2 views to side view

[fanadeynbataoil]

whats the purrpose of 45 angle ? plss answer

[shivanshsingh]

will such type of questions will be there for first year student

[sarthaksarniya]

ye vidyo sir first angle hee ya third angle ??

[tvisasoni]

Sir, your explanation Is too good but after making a box I can draw by myself can you please specifically
Teach how to draw box this you have already drawn ane at the end no dimension too much time taking for understanding

[prajeeshk]

Need video on guide block drawing, from multiview projections, top view and right side view

[otienoedgardavis]

Please can you elaborate on how you can go through combined objects.