Spanning

Defines the directions in which Tekla Structures distributes the load.

• Single distributes the load only in the direction of the primary axis.

• Double distributes the load along the primary and secondary axes.

Primary axis direction

Defines the direction of the primary axis using one of the following methods:

• A value (1) in the x, y, or z box distributes the load in the corresponding global direction.

• Values in multiple boxes distribute the load between the corresponding global directions. The values are the components of the direction vector.

• Clicking Parallel to part, or Perpendicular to part, and then selecting a part in the model aligns the primary axis direction with the part.

If Spanning is Double, you need to define the primary axis direction to be able to manually define the primary axis weight.

To check the primary axis direction of a selected load in a model view, click Show direction on selected loads. Tekla Structures indicates the primary direction using a red line.

Automatic primary axis weight

Defines whether Tekla Structures automatically weights the directions in load distribution.

The options are:

• Yes: Tekla Structures automatically calculates the load portions for the primary and secondary directions 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.

• No: You can enter the weight for the primary direction in the Weight box. Tekla Structures calculates the weight for the secondary direction by subtracting this value from 1.

Load dispersion angle

The angle by which the load is projected onto the surrounding parts.

Use continuous structure load distribution

Use for uniform loads on continuous slabs. Defines the distribution of support reactions in the first and last spans.

The options are:

• Yes: The distribution of support reactions is 3/8 and 5/8.

  

• No: The distribution of support reactions is 1/2 and 1/2.