Moment connection (181)
Moment connection (181) connects a beam to a column or to a beam with a single shear tab or double shear tabs. The shear tab is welded to the main part and bolted to the secondary part web. The secondary beam can be leveled or sloped. Top and bottom flange plates may be welded to the secondary beam and site-welded to the main column.
Objects created
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Shear tab (1 or 2)
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Top flange plate
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Bottom flange plate
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Stiffeners (4) (optional)
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Web doubler plate (optional)
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Bolts
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Welds
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Cuts
Use for
Situation |
Description |
---|---|
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Moment connection welded to a column flange. The secondary part is sloped. |
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Moment connection welded to a column flange. Beam weld preparation and weld access hole options. |
Selection order
-
Select the main part (column or beam).
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Select the secondary part (beam).
The connection is created automatically when the secondary part is selected.
Part identification key
Part |
|
---|---|
1 |
Shear tab |
2 |
Top flange plate |
3 |
Bottom flange plate |
4 |
Top stiffener plate |
5 |
Bottom stiffener plate |
Tekla Structures uses values in the joints.def file to create this component.
Picture tab
Use the Picture tab to control the position of the shear tab, and the beam flange and the web cuts.
Dimensions
Description |
|
---|---|
1 |
Site welding distance from the edge of the top flange plate to the main part flange. |
2 |
Site welding distance from the edge of the bottom flange plate to the main part web. |
3 |
Distance from the edge of the shear tab to the top edge of the secondary part. |
4 |
Chamfer dimension of the shear tab. |
5 |
Distance from the main part flange to the edge of the secondary part. |
Beam end cut
Define how the secondary beam end is cut. The beam is viewed from the side.
Option |
Description |
---|---|
Default Bevel AutoDefaults can change this option. |
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Automatic If the secondary beam is sloped less than 10 degrees, the beam end is cut square. Otherwise, the beam end is cut bevel. |
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Square Cuts the end of the secondary beam square. |
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Bevel Cuts the end of the secondary beam parallel to the edge of the main part. |
Beam flange cut
Define how the secondary beam flange end is cut. The beam is viewed from the top.
Option |
Description |
---|---|
Default Bevel AutoDefaults can change this option. |
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Bevel Cuts the end of the flange bevel. |
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Square Cuts a part of the flange square and leaves a part of it bevel. |
Plates tab
Use the Plates tab to control the size, position, number, and shape of the shear tab.
Plates
Option |
Description |
---|---|
Tab plate |
Shear tab plate thickness, width and height. |
Option |
Description |
---|---|
Top plate |
Top plate thickness, width and height. |
Bottom plate |
Bottom plate thickness, width and height. |
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 . |
Material |
Material grade. |
The default material is defined in the Part material box in the Components settings in . |
Name |
Name that is shown in drawings and reports. |
Shear tab dimensions
Description |
|
---|---|
1 |
Distance from the edge of the main part flange to the edge of the top and bottom plate. |
2 |
Distance from the flange of the secondary part to the edge of the top and bottom plate. |
3 |
Width of the chamfered end of the top and bottom plate. |
4 |
Chamfering dimension of the top and bottom plate. |
Shear tab position
Define the number and the side of shear tabs in single shear tab connections.
Option |
Description |
---|---|
Default Far side shear tab AutoDefaults can change this option. |
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Automatic The component automatically selects either the near side or the far side shear tab. The tab is created to the side of the secondary part when the angle between the main part and the secondary part is less than 90 degrees. |
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Far side shear tab |
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Near side and far side shear tab |
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Near side shear tab |
Stiffeners tab
Use the Stiffeners tab to control the stiffener plate dimensions, orientation, position and type.
Stiffener plate dimensions
Option |
Description |
---|---|
Top NS |
Top near side stiffener thickness, width and height. |
Top FS |
Top far side stiffener thickness, width and height. |
Bottom NS |
Bottom near side stiffener thickness, width and height. |
Bottom FS |
Bottom far side stiffener thickness, width and height. |
Option |
Description |
Default |
---|---|---|
Pos_No |
Prefix and start number for the part position number. |
The default part start number is defined in the Components settings in . |
Material |
Material grade. |
The default material is defined in the Part material box in the Components settings in . |
Name |
Name that is shown in drawings and reports. |
Stiffener positions
Description |
|
---|---|
1 |
Size of the gap between the stiffener and the beam web edge. |
2 |
Size of the gap between the top near side stiffener and the beam flange edge. |
3 |
Size of the gap between the bottom near side stiffener and the beam flange edge. |
4 |
Size of the gap between the bottom far side stiffener and the beam flange edge. |
5 |
Size of the gap between the top far side stiffener and the beam flange edge. |
Stiffener orientation
Option |
Description |
---|---|
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Default Stiffeners are parallel to the secondary part. AutoDefaults can change this option. |
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Stiffeners are parallel to the secondary part. |
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Stiffeners are perpendicular to the main part. |
Stiffener creation
Option |
Description |
---|---|
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Default Stiffeners are created. AutoDefaults can change this option. |
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Automatic Stiffeners are created when necessary. |
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No stiffeners are created. |
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Stiffeners are created. |
Stiffener shape
Option |
Description |
---|---|
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Default Line chamfered stiffener plates AutoDefaults can change this option. |
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Automatic Line chamfered stiffener plates |
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Square stiffener plates Stiffener plates with a gap for the main part web rounding |
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Line chamfered stiffener plates |
Stiffener gap
Description |
|
---|---|
1 |
Distance from the edge of the flange to the edge of the stiffener. |
2 |
Size of the gap between the flanges and the stiffener. |
Chamfer dimensions
Description |
Default |
|
---|---|---|
1 |
Vertical dimension of the chamfer. |
10 mm |
2 |
Horizontal dimension of the chamfer. |
10 mm |
Chamfer type
Option |
Description |
---|---|
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Default. Line chamfer AutoDefaults can change this option. |
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No chamfer |
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Line chamfer |
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Convex arc chamfer |
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Concave arc chamfer |
Notch tab
Use the Notch tab to automatically create notches for the secondary beam and to control the notch properties. The Notch tab has two sections: automatic properties (top section) and manual properties (bottom section). Automatic and manual notching properties work independently from each other.
Automatic notching
Automatic notching options affect both the top and the bottom flange.
Notch shape
Automatic notching is switched on when you select a notch shape.
Option |
Description |
---|---|
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Default Creates notches to the secondary beam. AutoDefaults can change this option. |
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Creates notches to the secondary beam. The cuts are square to the main beam web. |
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Creates notches to the secondary beam. The cuts are square to the secondary beam web. |
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Creates notches to the secondary beam. The vertical cut is square to the main beam, and the horizontal cut is square to the secondary beam. |
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Turns off automatic notching. |
Notch size
Option |
Description |
---|---|
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Default The notch size is measured from the edge of the main beam flange and from underneath the top flange of the main beam. AutoDefaults can change this option. |
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The notch size is measured from the edge of the main beam flange and from underneath the top flange of the main beam. |
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The notch size is measured from the center line of the main beam and from the top flange of the main beam. |
Enter the horizontal and vertical values for the cuts.
Flange cut shape
Option |
Description |
---|---|
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Default Secondary beam flange is cut parallel to the main beam. AutoDefaults can change this option. |
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Secondary beam flange is cut parallel to the main beam. |
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Secondary beam flange is cut square. |
Notch dimension rounding
Use the notch dimension rounding options to define whether the notch dimensions are rounded up. Even if the dimension rounding is set to active, the dimensions are rounded up only when necessary.
Option |
Description |
---|---|
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Default Notch dimensions are not rounded. AutoDefaults can change this option. |
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Notch dimensions are not rounded. |
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Notch dimensions are rounded. Enter the horizontal and vertical rounding values. |
The dimensions are rounded up the nearest multiple of the value you enter. For example, if the actual dimension is 51 and you enter a round-up value of 10, the dimension is rounded up to 60.
Notch position
Option |
Description |
---|---|
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Default Creates the cut below the main beam flange. AutoDefaults can change this option. |
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Creates the cut below the main beam flange. |
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Creates the cut above the main beam flange. |
Notch chamfer
Option |
Description |
---|---|
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Default The notch is not chamfered. AutoDefaults can change this option. |
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The notch is not chamfered. |
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Creates the notch with a line chamfer. |
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The notch is chamfered according to the radius you enter. |
Enter a radius for the chamfer.
Manual notching
Use manual notching when a part that does not belong to the connection clashes with the secondary beam. When you use manual notching, the connection creates cuts using the values you enter in the fields on the Notch tab. You can use different values for the top and the bottom flange.
Side of flange notch
The side of flange notch defines on which side of the beam the notches are created.
Option |
Description |
---|---|
|
Default Creates notches on both sides of the flange. AutoDefaults can change this option. |
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Automatic Creates notches on both sides of the flange. |
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Creates notches on both sides of the flange. |
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Creates notches on the near side of the flange. |
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Creates notches on the far side of the flange. |
Flange notch shape
The flange notch shape defines the notch shape in the beam flange.
Option |
Description |
---|---|
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Default The entire flange of the secondary beam is cut as far back as you define. AutoDefaults can change this option. |
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Automatic The entire flange of the secondary beam is cut as far back as you define. The default depth for the notch is twice the thickness of the secondary flange. The cut always runs the entire width of the secondary flange. |
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Creates chamfers in the flange. If you do not enter a horizontal dimension, a chamfer of 45 degrees is created. |
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Creates cuts to the flange with default values unless you enter values in the fields 1and 2. |
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The flange is not cut. |
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Creates cuts to the flange according to the value in the field 1 to make it flush with the web. |
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Creates cuts to the flange according to the values in the fields 1 and 2. |
Flange notch depth
Option |
Description |
---|---|
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Default Flange notch depth. AutoDefaults can change this option. |
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Flange notch depth. |
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Flange notch depth with a dimension from the secondary beam web center line to the edge of the notch. |
Enter the value for flange notch depth.
Cut dimensions
Description |
Default |
|
---|---|---|
1 |
Dimensions for the horizontal flange cuts. |
10 mm |
2 |
Dimensions for the vertical flange cuts. |
The gap between the notch edge and the beam flange is equal to the main part web rounding. The notch height is rounded up to the nearest 5 mm. |
Bolts tab
Use the Bolts tab to control the properties of the bolts that connect the shear tab to the secondary part.
Bolt group dimensions
Bolt group dimensions affect the size and shape of the shear tab.
Description |
|
---|---|
1 |
Dimension for horizontal bolt group position. |
2 |
Bolt edge distance. Edge distance is the distance from the center of a bolt to the edge of the part. |
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.
|
7 |
Define which bolts are deleted from the bolt group. Enter the bolt numbers of the bolts to be deleted and separate the numbers with a space. Bolt numbers run from left to right and from top to bottom. |
Staggering of bolts
Option |
Description |
---|---|
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Default Not staggered AutoDefaults can change this option. |
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Not staggered |
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Staggered type 1 |
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Staggered type 2 |
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Staggered type 3 |
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Staggered type 4 |
Bolt group orientation
Option |
Description |
---|---|
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Default Square AutoDefaults can change this option. |
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Automatic Square |
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Staggered Bolts are staggered in the direction of the secondary part. |
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Square Square bolt group is positioned horizontally. |
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Sloped Square bolt group is sloped in the direction of the secondary part. |
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 or tapped holes. No hole does not create holes. |
|
Rotate Slots |
When the hole type is Slotted, this option rotates the slotted holes. |
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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.
Beam cut tab
Use the Beam cut tab to control the weld access holes, beam end preparations, and flange cuts.
Weld access hole dimensions
Description |
|
---|---|
1 |
Gap between the secondary part top flange and the main part. |
2 |
Vertical dimensions for the top and the bottom weld access holes. |
3 |
Horizontal dimensions for the top and the bottom weld access holes. |
4 |
Gap between the secondary part web and the main part. Tekla Structures adds the value you enter here to the gap you enter on the Picture tab. |
5 |
Gap between the secondary part bottom flange and the main part. Tekla Structures adds the value you enter here to the gap you enter on the Picture tab. |
Weld access holes
Option |
Option |
Description |
---|---|---|
|
|
Default Round weld access hole AutoDefaults can change this option. |
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Round weld access hole |
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Square weld access hole |
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Round weld access hole with a radius that you can define in |
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Extended cone-shaped weld access hole with a radius and dimensions that you can define in |
|
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Cone-shaped weld access hole with radiuses that you can define in and Capital R defines the large radius (height). Small r defines the small radius. |
Beam end preparation
Option |
Description |
---|---|
Default Top and bottom flange are prepared. AutoDefaults can change this option. |
|
Automatic Top and bottom flange are prepared. |
|
Beam end is not prepared. |
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Top and bottom flange are prepared. |
Beam end alignment
Option |
Description |
---|---|
|
Default Beam end is not aligned. Secondary part flange is not aligned with the top and bottom plates. AutoDefaults can change this option. |
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Beam end is not aligned. |
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Beam end is aligned. |
Flange cut
Option for top flange |
Option for bottom flange |
Description |
---|---|---|
|
|
Default Flange is not cut. AutoDefaults can change this option. |
|
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Flange is not cut. |
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Flange is cut. |
Doubler plates tab
Use the Doubler plate tab to create doubler plates to strengthen the web of the main part.
Web plate
Option |
Description |
---|---|
Web plate |
Web plate thickness and height. |
Option |
Description |
Default |
---|---|---|
Pos_No |
Prefix and start number for the part position number. |
The default part start number is defined in the Components settings in . |
Material |
Material grade. |
The default material is defined in the Part material box in the Components settings in . |
Name |
Name that is shown in drawings and reports. |
Doubler plates
Option |
Description |
---|---|
|
Default Doubler plates are not created. AutoDefaults can change this option. |
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Doubler plates are not created. |
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Doubler plate is created on the far side. |
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Doubler plate is created on the near side. |
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Doubler plates are created on both sides. |
Doubler plate edge shape
Option |
Description |
---|---|
|
Default Bevel doubler plates AutoDefaults can change this option. |
|
Bevel doubler plates Enter the angle in |
|
Square doubler plates |
Doubler plate cuts
Option | Description |
---|---|
Default Doubler plates are not cut. AutoDefaults can change this option. |
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Doubler plates are not cut. |
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Doubler plates are cut in the area that connects the main part web and flange. |
General settings
Description |
|
---|---|
1 |
Edge distance from the column flange. |
2 |
Doubler plate edge distance. Edge distance is the distance from the center of a hole to the edge of the part. |
3 |
Edge distance of the doubler plate in relation to the bottom of the secondary part. |
4 |
Number of holes. |
5 |
Hole spacing. Use a space to separate hole spacing values. Enter a value for each space between holes. For example, if there are 3 holes, enter 2 values. |
Weld hole size
Description |
|
---|---|
1 |
Hole diameter. |
2 |
Slot length. |
3 |
Slot width. |
General tab
Click the link below to find out more:
Design type tab
Click the link below to find out more:
Analysis tab
Click the link below to find out more:
Welds
Click the link below to find out more: