Add overhangs to existing slab or mat edges

Tekla Structural Designer
2021
Tekla Structural Designer

Add overhangs to existing slab or mat edges

At times, the edge of a slab or mat may extend beyond a grid line, either to the edge of the beam which supports the edge of the slab, or around the perimeter of the building to meet the inside face of the cladding. In order to take these cases in to account, Tekla Structural Designer allows you to define overhangs to the edges of a slab. An overhang may extend across many slab items in one slab and can be curved, or tapered if required.

Any loads that you define over an overhang are included in the total loading on your building.

You can only create overhangs in 2D views.

Add an overhang along the full length of a supporting beam

Note: This method can only be used if a beam exists along the entire slab/mat edge to which the overhang is to be added.
  1. Open a 2D view of the level containing the slab/mat for which you want to create the overhang.
  2. Do one of the following:
    To Do this
    Create an overhang over a supporting beam to a slab edge
    1. On the Model tab, click the arrow in the top right corner of the Slabs group.

    2. In the list that appears, select Slab Overhang.

    3. In the Properties window, check LengthOfBeam.
    4. If necessary, in the Properties window, modify the width and other properties of the overhang.
    5. Click on the beam over which the overhang is to extend.
    Create an overhang over a supporting beam to a mat edge
    • On the Foundations tab, the arrow under Mat Opening.

    • In the list that appears, select Mat Overhang.

    • In the Properties window, check LengthOfBeam.
    • If necessary, in the Properties window, modify the width and other properties of the overhang.
    • Click on the beam over which the overhang is to extend.

    Tekla Structural Designer creates the overhang along the length of the beam.

Add an overhang to a slab or mat edge between two points

Note: In order to define a slab overhang between two points, you must have already defined the slab to which it applies.
  1. Open a 2D view of the level containing the slab/mat for which you want to create an overhang.
  2. Do one of the following:
    To Do this
    Create an overhang to a slab edge
    1. On the Model tab, click the arrow in the top right corner of the Slabs group.

    2. In the list that appears, select Slab Overhang.

    Create an overhang to a mat edge
    • On the Foundations tab, the arrow under Mat Opening.

    • In the list that appears, select Mat Overhang.

    The slab or mat overhang properties are viewed in the Properties window.

  3. Ensure the LengthOfBeam property is unchecked.
  4. If necessary, in the Properties window, modify the width and other properties of the overhang.
  5. Click along the edge of an existing slab item or mat panel to define the start point of the overhang, or press F2 to define its exact position.
  6. Click along the same edge to define the end point of the overhang, or press F2 to define its exact position.

    Tekla Structural Designer creates the overhang between the two points.

Add a curved overhang to a slab or mat edge

While following one of the above procedures to add an overhang along the length of a supporting beam, or between two points:

  1. In the Properties window, uncheck the Edge parallel property.
  2. In the Properties window, define the Curvature of the overhang.
  3. Continue to create the overhang in the normal way.

Add a tapered overhang to a slab or mat edge

While following one of the above procedures to add an overhang along the length of a supporting beam, or between two points:

  1. In the Properties window, check the Tapered property.
  2. Use the Width1 property to define the length of overhang at end 1.
  3. Use the Width2 property to define the length of overhang at end 2.
  4. Continue to create the overhang in the normal way.
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