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Offset generation

Last updated September 28, 2016 by Steel Extensions tekla.extensions-steel@trimble.com

Software version: 
Not version-specific
Environment: 
Not environment-specific

Offset generation

Contents

 

Purpose and description
System requirements
Installing Offset generation
Using Offset generation
Picture
Example
See also
 

Purpose and description

Use Offset generation to create offset clearances easily for purposes of avoiding/preventing part clashes and perform weld work.

System requirements

Tekla Structures version: Not version specific
Environments: All

Installing Offset generation

To install the extension:

  1. Download the Offset tools installer package from Tekla Warehouse. For more information see Downloading an application from Tekla Warehouse.
  2. Install the file package.

Using Offset generation

To use the extension:

  1. Open a Tekla model.
  2. Click the Applications & components button  in the side pane to open the Applications & components cataloguser interface for displaying or modifying information in categorized lists

    For example, profile catalog and shape catalog are catalogs.

    .
  3. Search for Offset generation and then double-click to open it..
  4. The Offset generation dialog window will open and you can enter the desired offset values.
  5. Create three or five beams as showed in Picture tab.
Situation Description
Offset generation applied on three beams (two vertical – primary beams and one skewed – adjusted beam).
Offset generation applied on five beams (two vertical – primary beams, two horizontal – boundary beams - and one skewed – adjusted beam).
  1. For selection order, please see the table below:
Picture Description
For three beams:
  1. Select the first primary beam.
  2. Pick the first boundary point.
  3. Select the beam to be adjusted.
  4. Select the second primary beam.
  5. Pick the second boundary point.
  1. Select the first primary beam.
  2. Select (pick) the first boundary beam (point).
  3. Select the beam to be adjusted.
For five beams:
  1. Select the first primary beam.
  2. Select the first boundary beam.
  3. Select beam to be adjusted.
  4. Select the second primary beam.
  5. Select the second boundary beam.

Picture

Use Picture tab to control gapany space between two objects

The term ’gap’ is used in its general sense in Tekla Structures.

and offset of the part created in the Offset generation component.

  1. Gap/offset dimensions


      Description Default
    Define gap/offset between the adjusted beam and the second primary beam. 0 mm
    Define gap/offset between the adjusted beam and the first primary beam. 0 mm
    Define the rounding of the offset.
    The option are:
    • Round off

    Eg: rounding value = 5

    1. offset is 322,8 mm => rounded offset is 325,0 mm
    2. offset is 322,1 mm => rounded offset is 320,0 mm
    3. offset is -322,8 mm => rounded offset is -320,0 mm
    4. offset is -322,1 mm => rounded offset is -325,0 mm
    • Round up - The value is rounded to the next number that is divided by rounding value.

    Eg: rounding value = 5

    1. offset is 322,8 mm => rounded offset is 325,0 mm
    2. offset is 322,1 mm => rounded offset is 325,0 mm
    3. offset is -322,8 mm => rounded offset is -320,0 mm
    4. offset is -322,1 mm => rounded offset is -320,0 mm
    • Round down - The value is rounded to the previous number that is divided by rounding value.

    Eg: rounding value = 5

    1. offset is 322,8 mm => rounded offset is 320,0 mm
    2. offset is 322,1 mm => rounded offset is 320,0 mm
    3. offset is -322,8 mm => rounded offset is -325,0 mm
    4. offset is -322,1 mm => rounded offset is -325,0 mm
    • Do not round - The value is not rounded.
    Round off
    Define the rounding value. 1 mm
    1/16 in
    Define whether or not to draw temporary lines (are lines that show you were the gap or offset is measured. They can be cleared with Redraw view command and don’t affect in any way the model.).
    The options are:
    • Off – no temporary lines are drawn;
    • On – temporary line are drawn.
    Off
  1. Creating offset/gap options

    Note: Parts will be offset in the current work planeplane that the user has chosen in a model and that is currently active for working on in a model view

    Newly created, copied, or moved model objects comply with the work plane. For example, shifting the work plane to follow a sloped plane makes it easier to model sloped structures.

    along primary beams; moving the end point relative to a different plane introduces rotation around the axis. So for example, if working on a sloped jacked face, set the work plane to the jacket face in order to keep the rotation of seams relative to the jacket face constant.

    Option Description
    Part gap
    Default
    Part offset
    Point gap
    Point offset
    No offset or gap.

Example

  1. Coplanar case: primary, boundary and adjusted beams center lines are in the same plane

Note: All beams can have any profile with any given rotation.

  • The Gap is measured as the distance between the intersection points of the primary solid center line and the closest boundary and adjusted extrema solid lines projected on the parts center lines plane.

Coplanar gap

The Gap can have negative values.

Coplanar negative gap
  • The Offset is measured as the distance between the intersection of primary center line with the boundary and adjusted center lines.

Coplanar offset
  1. Top flush case: boundary, adjusted and primary solid top level are in the same plane
    and
    3D case: primary, boundary and adjusted center lines are in different planes

Note: All beams need to be round profiles. Negative gap is not defined.

  • The Gap is measured as the minimum distance between the intersection points of the primary beam with boundary and adjusted beams.

Top flush – gap

3D – Gap
  • The Offset is measured in the plane that intersects the primary center line and is parallel to the boundary center line.

Top flush – rounded offset

Offset points are at the intersection of the adjusted and boundary center lines projections on this plane and primary center line.
If one center line projection is parallel to the primary center line then the offset point is at the intersection of primary center line with secondary center line.

  • If Point gap or Point offset option is selected, the gap or offset is measured along the primary part up to the normal plane that goes through selected point.

Point gap

Point offset

See also

Offset check
Offset generation manager

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