Welded beam to beam (123)

Welded beam to beam (123) connects two beams using a fully welded connection. The beams can have welding preparations. Stiffener plates with welding preparations can also be created.

Limitations

You can only use I-section beams.
You cannot use beams that are horizontally skewed or vertically sloped.

Objects created

Stiffeners
Cuts
Welds

Use for


Situation	Description
	Fully welded beam to beam connection

Selection order

Select the main part (beam).
Select the secondary part (beam).

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

Part identification key


	Description
1	Front stiffener
2	Back stiffener

Picture tab

Use the Picture tab to define the beam and stiffener offset dimensions.

Dimensions


	Description
1	Gap dimension between the main part web and the secondary part edge.
2	Secondary part offset dimension from the main part flange.
3	Secondary part offset dimension from the underside of the main part flange.
4	Back stiffener offset dimension from the main part web.
5	Front stiffener offset dimension from the main part web.

Parameters tab

Use the Parameters tab to define the stiffener plate properties, and whether weld preparations are required.

Plates


Option	Description
Btm stiff plate	Thickness and width of the stiffener on the main beam side.
Back stiffener	Thickness and width of the stiffener located behind the secondary beam.


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.

Weld preparation creation, beam web and flange thickness


Option	Description	Default
Are weld preparations required	Select whether to create weld preparations.	Weld preparations are not created.
Root face thickness of web at U/S of flange	Set the minimum thickness of the main beam web after the weld preparation cut. The minimum value is `2.0` mm. If you do not enter a value, the minimum value is used. Note that if you have defined a double-sided weld preparation, the root face thickness is centred on the web of the beam.
Root face thickness of web	Set the minimum thickness of the incoming beam web after the weld preparation cut. The minimum value is `2.0` mm. Note that if you have defined a double-sided weld preparation, the root face thickness is centred on the web of the beam.
Root face thickness for front stiffener	Set the minimum thickness of the front stiffener after the weld preparation cut. The minimum value is `2.0` mm. Note that if you have defined a double-sided weld preparation, the root face thickness is centred on the stiffener.	The default value is the thickness of the flange, that is, no weld preparation other than a gap can be created unless you define a root face thickness.
Root face thickness for rear stiffener	Set the minimum thickness of the back stiffener after the weld preparation cut. The minimum value is `2.0` mm. Note that if you have defined a double-sided weld preparation, the root face thickness is centred on the stiffener.	The default value is the thickness of the flange, that is, no weld preparation other than a gap can be created unless you define a root face thickness.
Use flange slope ratio	Select whether the flange slope ratio is used in notch cuts.

Define weld preparations

You can apply various weld preparations to the main beam flanges and web, and to the stiffener plates.

By default, the connection automatically detects whether the top and bottom flanges of the main beam clash with the flanges of the secondary beam. This determines how the weld preparations are handled.

If the main beam does not have the same section size as the secondary beam, the connection detects which flange is free based on which of the top or the bottom flanges are still clashing.

The following explains the basic weld preparation situations of each section of the main beam:


Situation	Description
Default	The top flange is cut back to avoid the top flange of the secondary beam. You can define the secondary part offset from the main part flange in and on the Picture tab. Set Are weld preparations required on the Parameters tab to Yes.
Weld from the outside	To create a weld preparation that shapes the top flange so that it can be welded from the outside, first set Are weld preparations required on the Parameters tab to Yes. Click the Welds button to define the weld settings: For top flange: For weld number 1, change the top half of Type from fillet weld to penetration weld . You can also define the size and angle of the weld. For the bottom flange: Modify weld number 3.
Weld from the inside	To create a weld preparation that shapes the top flange so that it can be welded from the inside, first set Are weld preparations required on the Parameters tab to Yes. Click the Welds button to define the weld settings: For weld number 1, change the bottom half of Type from fillet weld to penetration weld . You can also define the size and angle of the weld. For the bottom flange: Modify weld number 3.

Main beam web

Note that if you define any weld preparation on the beam web, the weld preparation is created on the vertical face of the web and the horizontal face of the web at the underside of the secondary beam flange.


Situation	Description
Default situation	The default weld preparation of the main beam web is to fit the beam to the side of the secondary beam web. Set Are weld preparations required on the Parameters tab to Yes. If needed, define that a gap is created between the two webs in on the Picture tab.
Weld from the near side	Set Are weld preparations required on the Parameters tab to Yes. Click the Welds button to define the weld settings. For weld number 2, change the top half of Type from fillet weld to penetration weld . You can also define the size and angle of the weld. Check on the Parameters tab that the root face thickness values are as needed.
Weld from the far side	Set Are weld preparations required on the Parameters tab to Yes. Click the Welds button to define the weld settings. For weld number 2, change the bottom half of Type from fillet weld to penetration weld . You can also define the size and angle of the weld. Check on the Parameters tab that the root face thickness values are as needed.
Weld from both sides	Set Are weld preparations required on the Parameters tab to Yes. Click the Welds button to define the weld settings. For weld number 2, change both the top and the bottom halves of Type from fillet weld to penetration weld . You can also define the size and angle of the weld. Check on the Parameters tab that the root face thickness values are as needed.

Front and back stiffener plates

If you define any weld preparation on the front and back stiffener, it is created on the three stiffener sides that are welded to the main beam and the secondary beam.


Situation	Description
Default situation	For the default situation, see the description of the main beam web. The welds you need to define are weld number 5 for the front stiffener and weld number 6 for the back stiffener.
Weld from the near side	See the description of the main beam web. The welds you need to define are weld number 5 for the front stiffener and weld number 6 for the back stiffener.
Weld from the far side	See description of the main beam web. The welds you need to define are weld number 5 for the front stiffener and weld number 6 for the back stiffener.
Weld from both sides	See the description of the main beam web. The welds you need to define are weld number 5 for the front stiffener and weld number 6 for the back stiffener.

Chamfers tab

Use the Chamfers tab to define the weld access hole dimensions.

Secondary beam weld access hole dimensions


	Description
1	Vertical flange dimension.
2	Flange cut shape.
3	Weld access hole shape.
4	Radius of the weld access hole.

Beam end dimensions


	Description
1	Length of the secondary beam web. This is the flange cut distance from the start of the web.
2	Vertical chamfer dimension.
3	Horizontal chamfer dimension.