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Modify the distribution of a load

Last updated March 12, 2019 by Tekla User Assistance tekla.documentation@trimble.com

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Modify the distribution of a load

Modify the distribution of a load

You can modify the way Tekla Structures distributes loads.

  1. Double-click a load to open its properties dialog box.
  2. Go to the Load panel tab.
  3. In the Spanning list, select whether to distribute the load in one or two directions.
  4. If you set Spanning to Single , define the primary axis direction. If you set Spanning to Double , you need to define the primary axis direction to be able to manually define the primary axis weight.

    Do one of the following:

    • To align the primary axis direction with a part, click Parallel to part or Perpendicular to part , and then select the part in the model.

    • To distribute the load in the global x, y, or z direction, enter 1 in the corresponding Primary axis direction box.

    • To distribute the load between several global directions, enter the components of the direction vector in the relevant Primary axis direction boxes.

    To check the primary axis direction of a selected load in a model viewview that is represented in the modeling mode

    Model view is available also in the drawing mode and it is represented in its own window.

    , click Show direction on selected loads. Tekla Structures indicates the primary direction using a red line.

  5. In the Automatic primary axis weight list, select whether Tekla Structures automatically weights the primary direction in load distribution.

    If you select No , enter a value in the Weight box.

  6. In the Load dispersion angle box, define the angle by which the load is projected onto the surrounding parts.
  7. In the Use continuous structure load distribution list of a uniform load, define the distribution of support reactions in the first and last spans of continuous slabs.
    • Select Yes for the 3/8 and 5/8 distribution.

    • Select No for the 1/2 and 1/2 distribution.

  8. Click Modify to save the changes.


When using double spanning, automatic primary axis weight and the weight value affect the proportions of the load which is applied to the primary axis and to the perpendicular axis.

  • If Automatic primary axis weight is Yes , the proportions will be in proportion to the third power of the span lengths in these two directions. This means that the shorter the span, the bigger the proportion of the load. The Weight value does not matter.

  • If Automatic primary axis weight is No , the given Weight value (0.50 in this example) is used to divide the load.

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