Performing Engineering Transformations

The bars' lengths are given by the bar manufacturer and the default bar lengths are defined by the BIM manager for the civil engineering project. You can split a rebar layer into several ones so that the length of each bar fits the length of the manufacturer's bars. Then it is easier to place couplers between bars or manage bar overlapping.

  1. To split a Rebar layer feature, click Rebar Transformations from the Reinforcement section of the action bar.

    The Rebar transformations dialog box displays the list of the possible transformations. You also can perform other transformations.

  2. Expand the Engineering transformations section and click the Rebar Split command.
  3. Select a layer in the tree or in the 3D area.
  4. To reinitialize the rebar group distribution, do the following:
    • Edit the text in the Distribution box, for example: 300mm+2x400mm+335mm, or 3x300. The pattern will contain one axis system at 300mm, two axis systems every 400mm, and one more axis system at 335mm.

      With the textual distribution, it is no more necessary to edit the Pattern feature to modify or create Pattern Groups and their distribution. The general distribution text format is: C1 x S1 + C2 x S2 + C3 x S3.

      "Ci": is the number of axis of the group "i". If the number of axis of this group is equal to 1, it can be omitted.

      "Si": is the spacing length of this same group. It can be associated to a unit, or without unit. If it does not have unit, the unit set in Preferences is used. If a unit is used to define a length, the same unit must be used for all lengths

    • Create Pattern groups: Points must be created/selected in the 3D area to split existing groups into two parts.
    • When you initialize the rebar layer layout, there is only one group in the pattern. The Count and Spacing modes can be changed with the combo box. If you click:
      • Count : Only count value modification and only one group are allowed.
      • Spacing : Only spacing value modification and only one group are allowed.
      • Count and Spacing : Count and Spacing values modification is allowed and several groups can be created. If a Pattern end point is specified, a Limit Spacing option is available to shift the Pattern distribution.

      If the current mode is Count and spacing, it can contain as many groups as needed, separated by the plus sign. All the groups created are in the Count and spacing mode. There cannot be several groups with different modes. If you change the definition of one group, the text editor is grayed out. If a pattern end point is specified, a Limit Spacing option is available to shift the pattern distribution.

      If a start and/or end offset values are defined, distribution is done between these boundaries. The start and end offsets are not managed in the text editor, edit the pattern by clicking to modify their values.

    • Click to launch the pattern for more precise edition. If you quit the Rebar Split command, double-click Bars split in the tree, the Rebar Split command reopens.

    Click anywhere in the 3D area to validate the distribution text, and the preview of the Axis systems is refreshed. An error message may appear if the input distribution text is incorrect. The pattern distribution is reinitialized with this text. Then you can continue to edit the rebar layers.

  5. Select one of the bars.

    If the BIM manager has specified the default length in the ObjectType (BarLength=10m) of the bar, this value will be chosen for the positioning of cutting points (for example, every 10 meters). If this length has not been defined in ObjectType, you can define a first split via the Spacing command (5m for example) in the Group 1 dialog box of the Curvilinear Pattern command.

    There is a preview of the split bars in the 3D area with:

    • Text information (5m for example) on bars, when the preferences' length is taken into account. However, when the total length of the bar is lower than the chosen split value (5 meters), the bar will only be divided into two bars.
    • Blue dots to visualize the cutting points (the split) on each bar. They cannot be selected in preview, unlike the pattern's axis.
    • Red dots to display the cutting points when they are on bends, because split is always set on straight bars, not on bends, to reinforce rods in concrete.

  6. When a curvilinear pattern already exists, click Edit the pattern to edit it.
  7. Click Apply in the Curvilinear Pattern dialog box to launch the actual rebar split.
  8. Click OK.
  9. To modify a result layer independently from the input layer (for a local change: diameter for example), click the result feature in the tree, and select the Rebar Split desynchronization contextual command.
  10. Once the result layer is desynchronized, double-click it to modify it.
  11. To synchronize it back, select the Rebar Split synchronization contextual command appearing when the result feature is selected in the tree.

 

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