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    Isometric Projection

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    rahul
    Isometric projections show all three dimensions of an object in a single view with each dimension shown at equal angles of 120 degrees to each other. Dimensions need to be converted to isometric scale for accurate representation in drawings. An example shows an isometric view drawn from given orthographic views of an object.

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    © All Rights Reserved
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    Isometric Projection

    Uploaded by

    rahul
    38 views38 pages
    Isometric projections show all three dimensions of an object in a single view with each dimension shown at equal angles of 120 degrees to each other. Dimensions need to be converted to isometric scale for accurate representation in drawings. An example shows an isometric view drawn from given orthographic views of an object.

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    Isometric projections show all three dimensions of an object in a single view with each dimension shown at equal angles of 120 degrees to each other. Dimensions need to be converted to isometric scale for accurate representation in drawings. An example shows an isometric view drawn from given orthographic views of an object.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    38 views38 pages

    Isometric Projection

    Uploaded by

    rahul
    Isometric projections show all three dimensions of an object in a single view with each dimension shown at equal angles of 120 degrees to each other. Dimensions need to be converted to isometric scale for accurate representation in drawings. An example shows an isometric view drawn from given orthographic views of an object.

    Copyright:

    © All Rights Reserved
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    Isometric Projections:

    It is a type of pictorial projection in which all three dimensions of an


    object are shown in one view.
    In this, an object is so placed that, its three mutually perpendicular edges are
    equally inclined with the plane of projection. So all three dimensional axes appear
    at equal inclinations with each other (120o).

    b c
    Isometric Planes:
    The planes representing the faces of the cube are called Isometric Planes.

    Isometric scale:
    When one holds the object in such a way that all three dimensions are visible then
    in the process all dimensions become proportionally inclined to observer’s eye
    sight and hence appear apparent in lengths.

    In practice, while drawing isometric projection, it is necessary to convert true


    lengths into isometric lengths.
    D
    4

    2 C
    4

    1 3

    0
    1
    450
    0 300
    A B

    Isometric scale ( Line AC ) required for Isometric Projection


    A

    B D
    120o

    E C 120o
    120o

    F H

    30o 30o
    M G N Base Line
    T.V.

    F.V. L.H.S.V.

    T.V.
    T.V

    R.H.S.V F.V

    T.V
    Isometric view if the Shape is
    SHAPE
    F.V. or T.V.
    D
    H
    RECTANGLE D
    A D A
    C C
    A

    B C B B
    B
    H
    TRIANGLE 3 B
    ISOMETRIC 1 B 1 3
    OF A A
    PLANE FIGURES 3
    1
    2 A 2 2
    4
    PENTAGON H E
    1 E 1
    4 D 4
    D
    E
    A D A
    1 3
    3 A C
    C
    2 3 B B
    B C 2 2
    Ellipses can be in any of three planes
    34
    60

    25

    L= 60 mm
    H= 25 mm X
    D= 34 mm
    Example 2
    Draw isometric drawing from given orthographic view

    O
    Solution 2
    Isometric Projections

    SH1131 SEM-II Engineering Graphics


    Isometric Projections

    SH1131 SEM-II Engineering Graphics


    Isometric Projections

    SH1131 SEM-II Engineering Graphics


    Isometric Projections

    SH1131 SEM-II Engineering Graphics


    Isometric Projections

    SH1131 SEM-II Engineering Graphics


    Isometric Projections

    SH1131 SEM-II Engineering Graphics


    Isometric Projections

    SH1131 SEM-II Engineering Graphics


    FV 40

    X O 10 Y
    100
    10
    25
    TV
    10 30 10
    25
    30 R O
    20 D
    FV
    40

    10
    O
    30 D 45

    10
    50
    O

    80

    TV
    HEX PART
    30
    20
    20
    40
    20

    O 50
    20
    15

    O 30
    100 60
    34
    60

    25
    L= 60 mm
    H= 25 mm
    D= 34 mm

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