Create pile caps

Tekla Structural Designer
Tekla Structural Designer

Create pile caps

A pile cap is an isolated piled foundation that supports a single column.


Before you can create pile caps, the Pile Catalogue must contain at least one pile type.

To create pile types, see Create a pile type catalogue.

Create pile cap under a specific column

  1. On the Foundations tab, click Pile Cap Column.
  2. In the Properties window, adjust the pile cap properties according to your needs.
  3. Click anywhere in the column under which you want to place the pile cap.

    Tekla Structural Designer places a pile cap under the selected column.

Create multiple pile caps

  1. On the Foundations tab, click Pile Cap Column.
  2. In the Properties window, adjust the pile cap properties according to your needs.
  3. Move the mouse pointer to a corner of an imaginary box that will encompass the columns under which you want to place pile caps.
  4. Hold down the left mouse button.
  5. Drag the mouse pointer to the opposite corner of the box.
  6. Release the mouse button.

    Tekla Structural Designer places pile caps under all columns within the box.

Create a user-defined pile arrangement

If necessary, you can modify the pile arrangement in a pile cap and create user-defined pile arrangements. Creating user-defined pile arrangements can be particularly useful when you want to check a pile cap where the pile positions on site do not exactly match the originally specified arrangement.

Do the following:

  1. In the model, select the pile cap that you want to modify.
  2. In the Properties window, go to Pile arrangement.
  3. Click the ... button next to Pile arrangement.

    The Pile Arrangement dialog box opens.

  4. In the Pile Arrangement dialog box, select the User Defined Arrangement option.

    If the Auto-design piles option is selected in the Properties window, Tekla Structural Designer asks you whether you want to turn off the option. Click Yes.

  5. Specify the pile arrangement properties according to your needs:
    1. Select the pile type.
    2. Define the pile length and width.
    3. If necessary, define the eccentricity of the pile cap centroid from the centroid of the column it supports in X and Y directions.

    To add more piles into the arrangement, click Add.

  6. If necessary, in the table below the properties, adjust the position of piles by defining the eccentricity of the pile centroid from the pile cap centroid.
  7. Click OK.

    Tekla Structural Designer creates the pale arrangement that you defined.

Override the loaded area to be used in the pile cap punching check

When you create a pile cap, initially the punching shear loaded area is based on the area of the column section being supported. If you require the punching check to consider an unmodeled base plate or pedestal you can do so by specifying a User loaded area as follows:

  1. Select the pile cap.
  2. In Properties window, go to the Foundation Parameters section and select User loaded area.
  3. Specify a Loaded Area Breadth and Loaded Area Depth appropriate to the base plate or pedestal.
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