ORTHOGRAPHIC PROJECTIONS

IT IS A TECHNICAL DRAWING IN WHICH DIFFERENT VIEWS OF AN OBJECT ARE PROJECTED ON DIFFERENT REFERENCE PLANES  OBSERVING PERPENDICULAR TO RESPECTIVE REFERENCE PLANE

    

Different Reference planes are

    

  Horizontal Plane (HP),                                                                                                                           Vertical Frontal Plane ( VP )                                                                                                                         Profile Plane ( PP)

                                                       And

                                                         

                                     Different Views are Front View (FV), Top View (TV) and  Side View (SV)

                                   FV is a view projected on VP.
                                    TV is a view projected on HP.
                                       SV is a view projected on PP.

IMPORTANT TERMS OF ORTHOGRAPHIC PROJECTIONS:

(1) Planes                                                                                                                                                        (2) Pattern of planes & Pattern of views.

          (3) Methods of drawing Orthographic Projections

                                                                 

                                           Pattern of planes & Pattern of views.