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  1. #1
    100 Club Binu Mathew's Avatar
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    Default Scaling in isometric View

    Good morning......... I have a doubt about isometric drawing preperation of piping.Is it possible to prepare in scale?that is angle and other dimensions in scale.Is it NTS or SCALED?normally it is NTS(not in scale)?please reply as soon as possible.Thanking you....

    With best regards,

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    Certified AUGI Addict jaberwok's Avatar
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    Default Re: Scaling in isometric View

    The concept of scale doesn't really apply in isometric views because the x and y scales are always different.

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    Certifiable AUGI Addict tedg's Avatar
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    Default Re: Scaling in isometric View

    Quote Originally Posted by BinuM View Post
    Good morning......... I have a doubt about isometric drawing preperation of piping.Is it possible to prepare in scale?that is angle and other dimensions in scale.Is it NTS or SCALED?normally it is NTS(not in scale)?please reply as soon as possible.Thanking you....

    With best regards,
    You can draw it with a scale in mind, but it wouldn't have a scale called out.
    You just want to avoid someone putting a scale on it to get dimensions.

    I've done some isometric drawings where lines were drawn and dimensioned at the correct length, but the scale was stated: "N.T.S."

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    All AUGI, all the time Richard.Kent's Avatar
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    Default Re: Scaling in isometric View

    Iso's can't be to scale since each line is foreshortened to the plane of projection. NTS is the only way to go.
    Last edited by Richard.Kent; 2008-08-27 at 10:27 PM. Reason: changed if to is

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    The Silent Type RobertB's Avatar
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    Default Re: Scaling in isometric View

    Quote Originally Posted by Richard.Kent View Post
    Iso's can't be to scale since each line is foreshortened to the plane of projection. NTS is the only way to go.
    Not entirely true. A 3D view set to one of the OOTB Iso (e.g. SW) can be scaled if you use a scale factor of 1.22474487*<desired scale>.
    R. Robert Bell
    Design Technology Manager
    Stantec
    Opinions expressed are mine alone and do not reflect the views of Stantec.

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    All AUGI, all the time Richard.Kent's Avatar
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    Default Re: Scaling in isometric View

    The OP asked about an isometric drawing which is a 2D drawing, so my comment stands. Even still, calling a 3D iso view to scale still seems wrong to me.

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    Certified AUGI Addict jaberwok's Avatar
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    Default Re: Scaling in isometric View

    Quote Originally Posted by RobertB View Post
    Not entirely true. A 3D view set to one of the OOTB Iso (e.g. SW) can be scaled if you use a scale factor of 1.22474487*<desired scale>.
    x and y scales in the view plane will be different.

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    Certifiable AUGI Addict dzatto's Avatar
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    Default Re: Scaling in isometric View

    Quote Originally Posted by RobertB View Post
    Not entirely true. A 3D view set to one of the OOTB Iso (e.g. SW) can be scaled if you use a scale factor of 1.22474487*<desired scale>.
    Well, techinially it can be dimensioned correctly in CAD using the scale factor, but it can't be scaled. In other words, when it's plotted, a sub can't put a scale on it to get a dimension in the field.

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    The Silent Type RobertB's Avatar
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    Default Re: Scaling in isometric View

    Quote Originally Posted by dzatto View Post
    Well, techinially it can be dimensioned correctly in CAD using the scale factor, but it can't be scaled. In other words, when it's plotted, a sub can't put a scale on it to get a dimension in the field.
    Wrong. Plot the attached DWF file and place a scale on it. That DWF is of a single 3D box, 1×4×9.
    Attached Files Attached Files
    R. Robert Bell
    Design Technology Manager
    Stantec
    Opinions expressed are mine alone and do not reflect the views of Stantec.

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    Certifiable AUGI Addict dzatto's Avatar
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    Default Re: Scaling in isometric View

    Well what do you know, it works. I learned something new today, time to go home.

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