Isometric projections

sushmachinta 861 views 18 slides May 10, 2020
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About This Presentation

isometric projections of prism , pyramid, cone, cylinder, difference between isometric projections and isometric drawing


Slide Content

Isometric Projections

Isometric Projections Isometric projection  is a method for visually representing three-dimensional objects in two dimensions in technical and engineering drawings.  It is a pictorial projection of an object and is a single view , in which all three dimensions of the object are revealed.

Isometric Projection

Q1 .Draw the isometric view of a square prism, with side of base 40 and length of axis 70. When its axis is ( i ) vertical (ii) horizontal

( i ) axis vertical

( i ) axis vertical

Q2.Draw the isometric view of a hexagonal prism, with side of base 25 and axis 60 long. The prism is resting on its base on H.P with an edge of the base parallel to V.P .(Use Box Method)

Q3.Draw the isometric view of a pentagonal pyramid, with side of base 25 and axis 60 long. The pyramid is resting on its base on H.P with an edge of the base (away from the observer) parallel to V.P .(Use Box Method)

Q4.Draw the isometric drawing of a cylinder, of base diameter 40 and axis 70 long with axis i )vertical and ii) horizontal .(Use Box Method)

Q4.Draw the isometric drawing of a cone, of base diameter 40 and axis 70 long with axis i )vertical and ii) horizontal .(Use Box Method)

The biggest visual difference between isometric drawings and isometric projections is the size of the two images. The isometric drawing is drawn using 100% true length measurements on the height, width, and depth axes. However, in isometric projections the height, width and depth are displayed at 82% of their true length. Isometric projection Vs Isometric drawing

Isometric projection Vs Isometric drawing Drawn to fore shortened dimension Reduced by 0.82 (1/1.224) Drawn to full given dimension Since all the dimensions fore-shortened by same amount Isometric projection: Isometric drawing: