Diagonal splice (53)

Tekla Structures
Tekla Structures

Diagonal splice (53)

Diagonal splice (53) connects two beams to a column using connection plates bolted to the column and beam flanges.

Objects created

  • Connection plates

  • Bolts

Use for

Situation Description

Beams are connected to a column with bolted connection plates.

Selection order

  1. Select the main part (column).

  2. Select the first secondary part (beam).

  3. Select the second secondary part (beam).

  4. Click the middle mouse button to create the connection.

Part identification key



Connection plate

Picture tab

Use the Picture tab to define the geometry of the connection.


Description Default


Define a vertex to the connection plate at the lowermost and uppermost intersection point of the column edge and the plate upper or lower edge.


Rectangular plate is created.


Define the distance to the first selected and second selected secondary part from the column center line to the secondary part end.

If the beams are perpendicular to the column, the default value for this distance is equal to the column flange width.

Otherwise, the default distance is calculated so that the beam does not collide with the column.


Define the plate tolerance.

You can use this dimension to increase the plate width.

10 mm

Parts tab

Use the Parts tab to define the part properties.


Option Description

Create as

Select whether to create a connection plate or a profile.


Thickness of the connection plate.


Select the profile from the profile catalog.

Spacer plate

Thickness, width, and height of the spacer plate.

If the main part profile is higher than the profile of the diagonal parts, spacer plates can be created between the connection plate and the diagonal parts to fill the empty space. To do this, the diagonal parts should be centrally connected to the main part.

By default, the thickness of the plate is equal to the width of the gap between the connection plate and the secondary beam. If the thickness is defined, the component creates as many plates as can be fitted in the gap.





Prefix and start number for the part position number.

Some components have a second row of fields where you can enter the assembly position number.

The default part start number is defined in the Components settings in File menu > Settings > Options.


Material grade.

The default material is defined in the Part material box in the Components settings in File menu > Settings > Options.


Name that is shown in drawings and reports.

Parameters tab

Use the Parameters tab to define the connection plate positions.

Twin profiles

If you are using twin profiles as secondary parts, select Yes in this option.

When selecting the secondary parts to this connection, select the outer part of the twin profiles.

Plate position

Option Description


Plates are created on both sides.

AutoDefaults can change this option.

Plate is created on the left side.

Plates are created on both sides.

Plate is created on the right side.

Plates are created on both sides.

Long bolts go through the column and beam flanges.

Bolts tab

Use the Bolts tab to define the bolt group dimensions and bolt properties.

Bolt group dimensions



Dimension for horizontal bolt group position.


Bolt edge distance.


Number of bolts.


Bolt spacing.

Use a space to separate bolt spacing values. Enter a value for each space between bolts. For example, if there are 3 bolts, enter 2 values.


Bolt group offset from the connection plate center line.


Dimension for vertical bolt group position.

Bolt basic properties




Bolt size

Bolt diameter.

Available sizes are defined in the bolt assembly catalog.

Bolt standard

Bolt standard to be used inside the component.

Available standards are defined in the bolt assembly catalog.


Gap between the bolt and the hole.

Thread in mat

Defines whether the thread may be within the bolted parts when bolts are used with a shaft.

This has no effect when full-threaded bolts are used.



Location where the bolts should be attached.


Slotted holes

You can define slotted, oversized, or tapped holes.





Vertical dimension of slotted hole.

0, which results in a round hole.


Horizontal dimension of slotted hole, or allowance for oversized holes.

0, which results in a round hole.

Hole type

Slotted creates slotted holes.

Oversized creates oversized or tapped holes.

No hole does not create holes.

Rotate Slots

When the hole type is Slotted, this option rotates the slotted holes.

Slots in

Part(s) in which slotted holes are created. The options depend on the component in question.

Bolt assembly

The selected check boxes define which component objects (bolt, washers, and nuts) are used in the bolt assembly.

If you want to create a hole only, clear all the check boxes.

To modify the bolt assembly in an existing component, select the Effect in modify check box and click Modify.

Bolt length increase

Define how much the bolt length is increased. Use this option when, for example, painting requires the bolt length to be increased.

Staggering of bolts




Not staggered

AutoDefaults can change this option.

Not staggered

Staggered type 1

Staggered type 2

Staggered type 3

Staggered type 4

General tab

Click the link below to find out more:

General tab

Design tab

Click the link below to find out more:

Design tab

Analysis tab

Click the link below to find out more:

Analysis tab

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