Haunch (40)

Tekla Structures
Modified: 11 Dec 2023
2024
Tekla Structures

Haunch (40)

Haunch (40) connects a beam to a column using a welded haunch, or a profile haunch and a bolted end plate.

Objects created

  • End plate

  • Top plate

  • Stiffeners

  • Cap plate

  • Web plate

  • Haunch plates

  • Compression flange plates

  • Bolts

  • Welds

Use for

Situation Description

Beam connected to a column using a profile haunch and a bolted end plate.

Selection order

  1. Select the main part (column).

  2. Select the secondary part (beam).

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

Part identification key

Description

1

Haunch plate

2

Stiffener

3

End plate

4

Top plate

5

Compression flange plate

Picture tab

Use the Picture tab to define the connection dimensions, chamfers, double haunches, and rotation point.

Dimensions

Description

1

Tolerance dimension from the stiffener edge to the column web.

2

Gap dimension between the column and the end plate.

3

Vertical stiffener dimension from the creation point.

4

End plate top position from the top of the secondary beam.

5

End plate bottom position from the haunch plate lower edge.

Top plate chamfers

Description

1

Horizontal chamfer dimension.

2

Vertical chamfer dimension.

Option Option Description

No chamfer

Line chamfer

Convex chamfer

Concave chamfer

Horizontal rafter double haunch

You can select to create a double haunch if the beam is horizontal. All the plates welded to the lower haunch are mirrored on the upper haunch and the end plate is extended.

Option Description

Default

Lower haunch is created.

AutoDefaults can change this option.

Lower haunch is created.

Double haunch is created.

Double haunch with column stiffeners is created.

Select rotation point

Option Description

Default

Rotation point is in the middle of the beam lower flange.

AutoDefaults can change this option.

Rotation point is in the middle of the haunch flange.

Rotation point is in the middle of the beam lower flange.

Description

1

Define the tolerance value between the column and the end plate.

The maximum width is at the top of the end plate. There is no tolerance at the lowest point of the end plate.

2

Select whether the tolerance is defined as a distance or as a rotation angle (in degrees).

Parameters tab

Use the Parameters tab to define the part properties and to control stiffener creation.

Parts

Option Description

End plate

Thickness, width, and height of the end plate.

Add. stiffener

Thickness, width, and height of the additional stiffener.

Rafter bottom stiffener

Thickness, width, and height of the beam bottom stiffener.

Compr. stiffener

Thickness, width, and height of the compression stiffener.

Top plate

Thickness, width, and height of the top plate.

Cap plate

Thickness, width, and height of the cap plate.

Diagonal stiffener

Thickness and width of the diagonal stiffener.

Beam stiffener

Thickness, width, and height of the beam stiffener.

Morris stiffener

Thickness and width of the Morris stiffener.

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.

Finish

Describes how the part surface has been treated.

Compression flange plate position

Option Description

Compression flange plate edge distance to the end plate bottom edge.

If the haunch is not created, the plate is positioned on the beam flange.

Cap plate position

Description Default

1

Cap plate edge distance from the column flange.

5 mm

The cap plate is by default 5 mm smaller than the profile.

2

Cap plate edge distance from the column flange.

Define this dimension when the cap plate width has not been defined.

5 mm

Option Description

Default

Cap plate is created parallel with the beam.

AutoDefaults can change this option.

Cap plate is created parallel with the beam.

Cap plate is horizontal.

Additional stiffener

Option Description

Default

Cap plate or stiffener is not created.

AutoDefaults can change this option.

Cap plate or stiffener is not created.

Cap plate or stiffener is not created.

Define the vertical dimension for moving the column end fitting plane.

Cap plate and stiffener are created.

Define the vertical dimension for moving the cap plate or the column end fitting plane.

Horizontal stiffener is created.

Stiffener is created parallel with the skewed beam.

Bottom flange stiffener

Option Description

Default

Stiffener is not created.

AutoDefaults can change this option.

Horizontal stiffener is created.

Stiffener is not created.

Skewed stiffener is created.

Morris stiffener

If a haunch is not created, the Morris stiffener is not created either.

Option Description

Default

Horizontal stiffener is created.

Define the upper stiffener dimension from the column web.

AutoDefaults can change this option.

Horizontal stiffener is created.

Define the upper stiffener dimension from the column web.

Stiffener is not created.

Skewed stiffener is created.

Define the upper stiffener dimension from the column web.

Stiffener chamfer shape and dimensions

Option Description

No chamfer

Line chamfer

Convex chamfer

Concave chamfer

Description

1

Horizontal chamfer dimension.

2

Vertical chamfer dimension.

Beam stiffener

Option Description

Default

Vertical stiffener in the direction of the column.

AutoDefaults can change this option.

Vertical stiffener in the direction of the column.

Stiffener is created perpendicular to the beam axis.

Beam stiffener offset

Option Description

Beam stiffener offset from the default position where the beam stiffener is created. The default position is in the place where the haunch profile flange touches the secondary beam.

Extra length for haunch flange plate

Define the distance that extends the flange plate of a welded haunch.

Parameter to avoid solid error

Define the distance value to avoid solid errors. If a haunch profile is selected, and a chamfer is created in the profile, the haunch profile may disappear. You can solve this issue by increasing this value. The default value is 0.5 mm.

Haunch tab

Use the Haunch tab to define the haunch plate properties, type, and geometry.

Parts

Option Description

Haunch prof

In Haunch type, select Profile or Default.

Select the haunch profile from the profile catalog.

Vert haunch pl

In Haunch type, select Welded plates.

Thickness of the haunch plate.

Horiz haunch pl

In Haunch type, select Welded plates.

Thickness and width of the haunch plate.

Closure plate

Thickness and height of the closure plate.

Comp. flange pl

Thickness, width, and height of the flange plate.

Haunch prolongation

If the connection is created with an open beam, the beam bottom flange can be extended to reach the end plate.

Select to extend the beam bottom flange on the Open beam tab.

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.

Finish

Describes how the part surface has been treated.

Haunch parameters

Description Default

1

Select the first dimension for the haunch geometry.

If the selected dimension cannot be used for the geometry, a red component symbol is displayed.

For profile hauches: If only one dimension is selected (first or second), a symmetrical haunch is created using the symmetrical cut for profile haunch options.

A, L1 dimension where L1 = 1/5 from the beam length.

Profile haunch: a symmetrical haunch using the symmetrical cut for profile haunch options.

2

Select the second dimension for the haunch geometry.

If you select two dimensions that cannot be used for the geometry, a red component symbol is displayed.

For profile haunches: If only one dimension is selected (first or second), a symmetrical haunch is created using the symmetrical cut for profile haunch options.

A, L1 dimension where L1 = 1/5 from the beam length.

Profile haunch: a symmetrical haunch using the symmetrical cut for profile haunch options.

Symmetrical cut for profile haunch

Select the calculation method, and define the tolerance value (t) and saw plate thickness (s) to create a symmetrical profile haunch. This setting is not used for welded plates.

When measured, the tolerance distance might have an error between 0 mm – 2 mm, resulting from the approximations done during calculation. Check that the result is as intended. Note that if you define the vertical cut distance at the upper end of the hauch, the tolerance value is not used.

With saw plate thickness, you can control how much of the material will be wasted because of the sawing.

Option Description

Default

Inner haunch flange to outer beam flange calculation.

AutoDefaults can change this option.

Define the tolerance value from the outer haunch plate flange, and the saw plate thickness.

Define the tolerance value from the inner haunch plate flange, and the saw plate thickness.

Define the tolerance value from the haunch plate web, and the saw plate thickness.

Inner haunch flange to outer beam flange calculation.

Welds in the vertical haunch plate

Option Description

Default

Both welds are created.

AutoDefaults can change this option.

Weld is created on the secondary beam.

Both welds are created.

Cut at the upper end of the haunch

Using this option you can select if the haunch is created as fitted to the secondary beam, or if there should be some material left, as specified with the d option.

Option Description

Default

Vertical cut at the upper end of the haunch. Define the cut distance.

AutoDefaults can change this option.

The cut is perpendicular to the beam flange.

Vertical cut at the upper end of the haunch. Define the cut distance.

Haunch is not cut.

Haunch end cuts parallel (only for profiles)

Select Yes to create the haunch cut at the upper end and the haunch cut at the lower end parallel to each other.

Cut at the lower end of the haunch (only for profile haunch)

Option Description

Default

Vertical cut at the lower end of the haunch.

AutoDefaults can change this option.

Vertical cut at the lower end of the haunch.

Haunch is not cut.

Extra plates

Use the Extra plates tab to define the web plate and bolt plate properties.

Parts

Option Descripton

Web plate

Thickness, width, and height of the web plate.

Upper bolt plate

Thickness and width of the upper bolt plate.

Lower bolt plate

Thickness and width of the lower bolt plate.

Plate on column

Thickness and width of the plate on the column.

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.

Finish

Describes how the part surface has been treated.

Bolt plate

Option Description

Default

One bolt plate for each bolt in the group.

AutoDefaults can change this option.

One bolt plate for each bolt in the group.

One bolt plate for each column of bolts in the group.

One bolt plate for all the bolts in the group.

Bolt plate is not created.

One bolt plate for each row of bolts in the group.

Bolt plate dimensions

Option Description

Define the bolt plate height when creating one bolt plate for each bolt in the group.

Define the vertical bolt plate edge distance for the first and last bolt in the group when creating one bolt plate for each column of bolts, or one bolt plate for all the bolts in the group.

Define the thickness of the horizontal bolt plate that continues the column flange.

If the first bolt in the beam bolt group is positioned above the beam – column collision area, a new bolt plate is created for the first bolt row in the group.

Create web plate

Option Description

Default

Web plate is not created.

AutoDefaults can change this option.

Web plate is not created.

One web plate is created on the right side of the column web.

One web plate is created on the left side of the column web.

Two web plates are created.

Web plate settings

Option Description Default

Web plate edge type

Select how the web plate is cut at the higher end.

Bevel cuts the web plate at the same angle the column cap plate is positioned. If the column cap plate is horizontal or does not exist, the web plate is cut Square.

Square

Number of holes

Define the number of holes in the web plate.

2

Hole diameter

Define the diameter of the holes in the web plate.

20 mm

Horizontal, Vertical

Define the web plate welding size:

  • Define the left and right weld between the column and the web plate.

  • Define the lower vertical edge for the web plate.

5 mm

Web plate dimensions

Option Description Default

1

Distance from the edge of the extra plate to the top of the cap plate.

5 mm

2

Hole edge distance of the first hole in the web plate.

30 mm + hole_diameter/2

3

Vertical spacing between the holes.

160 mm

4

Vertical hole edge distance to the lower edge of the web plate.

30 mm + hole_diameter/2

5

Number of holes in the columns.

1

6

Distance between the holes in the columns.

hole_diameter x 2

Slotted holes

You can define slotted or oversized holes.

Description

1

Vertical dimension of the slotted hole.

2

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

Chamfers tab

Use the Chamfers tab to define the chamfer type and dimensions.

Chamfers

Define the chamfer type and dimensions separately for each corner.

Chamfer Description Default

Chamfer 1

Select the chamfer type and define the dimensions.

This chamfer is available for both profile and welded plate haunches.

No chamfer

Chamfer 2

Select the chamfer type and define the dimensions.

This chamfer is available for welded plate haunches only.

No chamfer

Chamfer 3

Select the chamfer type and define the dimensions.

This chamfer is available for welded plate haunches only.

No chamfer

Holes tab

Use the Holes tab to control the galvanizing holes in the end plate.

Option Description

Bolt standard

Select the bolt standard.

Bolt type

Select the bolt type to define the location where the bolts should be attached.

Read data from

You can select to use the sinkholes.dat definition file to specify the default values for horizontal and vertical offsets, and the diameters for upper and lower holes.

The file is searched in the following order: Environment common system steel folder (..\Environments\common\system\Steel), model folder, XS_FIRM, XS_PROJECT and XS_SYSTEM folder.

You can also select to define the holes in the component dialog box.

Hole positions and number of holes

Define the hole positions and the number of holes in the end plate and the cap plate.

The hole group center in the end plate is the middle point of the rafter and the middle point of the haunch, if the haunch exists. The hole group center in the cap plate is the middle point of the column. The hole groups are composed of 0, 1, 2, or 4 holes.

Holes group in rafter Holes group in haunch Holes group in cap plate

Description Default

D1

Define the hole diameter for the holes positioned by the x1 and y1 dimensions.

20 mm

D2

Define the hole diameter for the holes positioned by the x2 and y2 dimensions.

20 mm

x1

Define the x1 position of the galvanization holes.

0

y1

Define the y1 position of the galvanization holes.

0

x2

Define the x2 position of the galvanization holes.

0

y2

Define the y2 position of the galvanization holes.

0

Bolts tab

Use the Bolts tab to define the bolt group dimensions and 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

Bolt edge distance.

Edge distance is the distance from the center of a bolt to the edge of the part.

4

Number of bolts.

5

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.

6

Dimension for vertical bolt group position.

7

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.

Bolting direction

Option

Description

Default

Bolting direction 1

AutoDefaults can change this option.

Bolting direction 1

Bolting direction 2

Open beam tab

Use the Open beam tab to create an open beam haunch. To create the haunch, the beam web is cut and the profile is opened at a desired angle. A welded plate is placed as the haunch web.

Create open beam

Option Description

Open beam is not created. This is the default.

Open beam is created.

If you create an open beam, the options on the Haunch tab are ignored.

Haunch dimensions

Description Default

1

Horizontal haunch dimension

300 mm

2

Vertical haunch dimension

300 mm

Beam extension

Option Description

Beam bottom flange is not extended. This is the default.

Beam bottom flange is extended to reach the end plate.

Haunch part to the beam

Option Description

The haunch is added to the beam.

The haunch is an independent part that is welded to the beam. This is the default.

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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