Seating (30)

Tekla Structures
Modified: 9 Oct 2023
2024
Tekla Structures

Seating (30)

Seating (30) connects two beams that cross but do not collide with each other. The beams are in parallel planes. When the distance between the beams is less than or equal to 50 mm, a plate is created between the beams. When the distance is more than 50 mm, a vertical plate with stiffeners is welded between the lower flange of the secondary beam and the connection plate. Horizontal angles between the beams can vary.

Objects created

  • Connection plate

  • Stiffeners (main part, secondary part, internal)

  • Bolts

  • Welds

Use for

Situation Description

Two beams connected with a bolted connection plate. Stiffeners are created.

Selection order

  1. Select the main part (beam).

  2. Select the secondary part (beam).

    The connection is created automatically when the secondary part is selected.

Part identification key

Description

1

Connection plate

2

Main part stiffeners

3

Secondary part stiffener

Picture tab

Use the Picture tab to define the connection dimensions and the plate type.

Dimensions

Description

1

Distance of the secondary part stiffener from the secondary beam edge

2

Secondary beam end cut dimension parallel to the main beam

If the overshoot is initially longer than the entered value, nothing is done to the secondary beam. If the value you enter is greater than the initial overshoot, the secondary beam will be stretched and fitted.

3

Secondary part stiffener tolerance

Define the dimension between the stiffener plate and secondary part flanges. By default, the value is zero.

4

Main part stiffener tolerance

Define the gap dimension between the stiffener plate and the main part flanges. By default, the value is zero.

Secondary beam fitting

Option Description

Default

Secondary part is fitted or not fitted.

AutoDefaults can change this option.

Secondary part is not fitted.

Secondary part is fitted.

Automatic

Secondary part is fitted or not fitted.

Connection plate type

Option Description

Default

Square plate

AutoDefaults can change this option.

Square plate

Round plate

Beam profile

Parts tab

Use the Parts tab to define the part properties.

Parts

Option Description Default

Prim stiffeners

Thickness, width, and height of the main part stiffeners

Thickness: 50% of bolt thickness rounded upwards to the next standard plate.

Width: If you do not enter the width, the stiffener width is defined based on the flange width.

Plate

Thickness, width, and height of the plate

If you have selected to use a beam profile as the plate on the Picture tab, select the beam profile in the profile catalog, and define the thickness.

Thickness: 50% of the bolt thickness

Width and height values define the dimensions of plates between the main part and secondary part. Width changes the value parallel to the main part.

If the gap between the main and secondary part is smaller than or equal to 50 mm, the plate thickness is set equal to the gap.

If the gap is greater than 50 mm, the thickness will affect the horizontal and vertical plate thickness, and the internal stiffener thickness.

Sec stiffeners

Thickness, width, and height of the secondary part stiffeners

Thickness: 50% of bolt thickness rounded upwards to the next standard plate.

Width: If you do not enter the width, the stiffener width is defined based on the flange width.

Int stiffeners

Thickness of the internal stiffeners of the plate that is created when the distance between the profiles is more than 50 mm.

10 mm

Option

Description

Default

Pos_No

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

Material grade.

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

Name

Name that is shown in drawings and reports.

Parameters tab

Use the Parameters tab to define the stiffener chamfer type and dimensions.

Chamfer type

Option Description

Default

Line chamfer

AutoDefaults can change this option.

No chamfer

Note that this can cause a clash between the stiffener and I profile rounding.

Line chamfer

Convex chamfer

Concave chamfer

Chamfer dimensions

Main part stiffeners Secondary part stiffeners

Description

1

Horizontal chamfer dimension

2

Vertical chamfer dimension

Bolts tab

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

Bolt group dimensions

Description

1

Dimension for horizontal bolt group position.

2

Select how to measure the dimensions for horizontal bolt group position.

  • Left: From the left edge of the secondary part to the leftmost bolt.

  • Middle: From the center line of the secondary part to the center line of the bolts.

  • Right: From the right edge of the secondary part to the rightmost bolt.

3

Number of bolts.

4

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.

5

Dimension for vertical bolt group position.

6

Select how to measure the dimensions for vertical bolt group position.

  • Top: From the upper edge of the secondary part to the uppermost bolt.

  • Middle: From the center line of the bolts to the center line of the secondary part.

  • Below: From the lower edge of the secondary part to the lowest bolt.

Bolt basic properties

Option

Description

Default

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.

Tolerance

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.

Yes

Site/Workshop

Location where the bolts should be attached.

Site

Slotted holes

You can define slotted, oversized, or tapped holes.

Option

Description

Default

1

Vertical dimension of slotted hole.

0, which results in a round hole.

2

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 holes.

No hole does not create holes.

Tapped creates tapped 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.

General tab

Click the link below to find out more:

General tab

Analysis tab

Click the link below to find out more:

Analysis tab

Was this helpful?
Previous
Next