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U.S. Base plate connection (71)

Last updated September 10, 2019 by Tekla User Assistance tekla.documentation@trimble.com

Software version: 
2019i

U.S. Base plate connection (71)

U.S. Base plate connection (71)

U.S. Base plate connection (71) creates a base platecomponent object that represents a plate welded to a column base

Base plates are used to distribute the concentrated load of the column over a wider area.

that connects a column to a beam.

Objects created

  • Base plate(1) part that represents a flat structure

    (1) In some contexts, for example in analysis, the term plate object may be used to refer to plates.

    (2) plate that represents a steel structure

    (2) Plate is mainly used as a connection piece or as a floor plate.

  • Stiffeners (can only be added if the column has a W, I, or a TS profile)

  • Beam stiffenercomponent object that represents a structure that strengthens a steel beam or column

    Stiffeners are usually plates.

    Stiffeners are used to prevent web buckling at supports or concentrated loads.

  • Bolts

  • Welds

Use for

Situation

Description

Base plate is connected to the beam.

Beam and column stiffeners are used.

Beam cantilever is connected to a column with a base plate.

Beam cantilever is connected to a sloped column with a base plate.

Beam cantilever is connected to a column with a base plate.

Beam stiffeners are used.

Beam cantilever is connected to the column with a base plate.

Beam and column stiffener are used.

Before you start

Create a beam and a column.

Selection order

  1. Select the main part(1) part that exists in a building object and that determines the position number for the assembly or cast unit and the direction of assembly or cast unit drawings

    (1) Main part can be an assembly main part or a cast unit main part.

    (2) input part that the user selects first when creating a component

    (2) Connections and details always have a component main part.

    (beam).

  2. Select the secondary part(1) part that exists in a building object and that is connected to the main part

    (1) Secondary part can be an assembly secondary part or a cast unit secondary part.

    (2) input part that the user selects after selecting the component main part when creating a component

    (2) A component can have none, one or more component secondary parts.

    (column).

    The connection is created automatically.

Part identification key

 

Part

1

Beam stiffener

2

Stiffeners 1, 2, 4, 5

3

Base plate

4

Stiffeners 3, 6, 7, 8

Picture tab

Use the Picture tab to control the stiffener chamfering and the base plate chamfers.

Stiffener chamfering

 

Description

1

Top chamfer width for stiffeners 1, 2, 4, 5.

2

Top chamfer height for stiffeners 1, 2, 4, 5.

3

Bottom chamfer height for stiffeners 1, 2, 4, 5.

4

Bottom chamfer width for stiffeners 1, 2, 4, 5.

5

Top chamfer width for stiffeners 3, 6, 7, 8.

6

Top chamfer height for stiffeners 3, 6, 7, 8.

7

Bottom chamfer height for stiffeners 3, 6, 7, 8.

8

Bottom chamfer width for stiffeners 3, 6, 7, 8.

9

Weld gap.

Base plate chamfering

 

Description

1

Width of base plate chamfer 1.

2

Height of base plate chamfer 1.

3

Height of base plate chamfer 2.

4

Width of base plate chamfer 2.

5

Width of base plate chamfer 3.

6

Height of base plate chamfer 3.

7

Height of base plate chamfer 4.

8

Width of base plate chamfer 4.

Parts tab

Use the Parts tab to control the dimensions of the base plate, stiffeners, and beam stiffener.

Plate

Option

Description

Default

Plate

Base plate thickness, width and height.

Thickness = 20 mm

Width depends on the column profile.

Height depends on the column profile.

The default name is BASEPLATE.

Stiffeners 1,2,4,5

Stiffener 1, 2, 4, 5 thickness, width and height.

Stiffeners 3,6,7,8

Stiffener 3, 6, 7, 8 thickness, width and height.

Beam Stiff

Beam stiffener 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 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 control the square cut corners, plate offset and bolt properties.

Plate properties

Option

Description

Square cut corners (1-4)

Cuts made on the corners of the base plate.

If you enter a number corresponding to one of the corners of the base plate, the corner has a square cut instead of a diagonal chamfer. You can enter the numbers for one or all the corners.

Plate aligned with

Define whether the plate is aligned with the column or the connection symbol.

Base plate offset

 

Description

1

Base plate horizontal offset from the column center.

2

Base plate vertical offset from the column center.

Base plate with holes or bolts

Option

Description

Default

Bolts are created.

AutoDefaults can change this option.

Bolts are created.

Holes are created.

Bolt group rotation

You can define the bolt groupgroup of bolts that forms a connecting building object between an assembly main part and secondary parts

The number of bolts in a bolt group depends on the bolt group shape and the values of bolt distances.

rotation around its center. To rotate the bolt group, enter the rotation angle (in degrees).

Positive angle rotates the bolts in a counter-clockwise direction and negative angle in a clockwise direction.

 

Description

1

Bolt group rotation angle.

Bolt properties

Option

Description

Eliminate bolt numbers

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 down.

Eliminate external bolts

Define whether external bolts are deleted.

Using additional components

You can use additional system or custom components to modify the column end or the base plate. For example, you can create special backing plates, weld preparations, and weld access holes for the column end.

If you use additional system or custom components, you need to manage the column end or the base plate properties in the additional component in question. When using several components, there may be multiple welds and cuts.

Option

Description

Component

Define a system or a custom component by selecting it from the component catalog.

Attributes

Enter the name of the attribute file for the selected component.

Input

Define to which parts the selected component is applied.

  • Default is same as Base + Column.

  • Column sets the column as the main part. Use this option for details.

  • Column + Base sets the column as the main part and the base plate as the secondary part.

  • Base + Column sets the base plate as the main part and the column as the secondary part.

Stiffeners tab

Use the Stiffeners tab to control stiffener positions and offsets.

Stiffener positions (1-8)

Option

Description

Stiffener Positions (1-8)

Placement of the stiffeners.

Only the stiffeners whose numbers are entered in the field are attached to the column.

Stiffener offset

Stiffener offset allows the stiffeners to be moved. Enter a negative value to move the stiffener in the opposite direction.

 

Description

1

Stiffener 1 offset.

2

Stiffener 2 offset.

3

Stiffener 3 offset.

4

Stiffener 4 offset.

5

Stiffener 5 offset.

6

Stiffener 6 offset.

7

Stiffener 7 offset.

8

Stiffener 8 offset.

Beam Stiff tab

Use the Beam Stiff tab to control the beam stiffener alignment, stiffener side, chamfer dimensions and types.

Left stiffener

Option

Description

Default

Left stiffeners are created.

AutoDefaults can change this option.

Left stiffeners are created.

Left stiffeners are not created.

Center stiffener

Option

Description

Default

Center stiffeners are created.

AutoDefaults can change this option.

Center stiffeners are created.

Center stiffeners are not created.

Right stiffener

Option

Description

Default

Right stiffeners are created.

AutoDefaults can change this option.

Right stiffeners are created.

Right stiffeners are not created.

Stiffener alignment

Options

Description

Default

Stiffeners are aligned with the beam.

AutoDefaults can change this option.

Stiffeners are aligned with the beam.

Stiffeners are aligned with the column.

Stiffener creation

Option

Description

Default

Stiffeners are created on both sides.

AutoDefaults can change this option.

Stiffeners are created on both sides.

Stiffeners are created on far side.

Stiffeners are created on near side.

Stiffeners are not created.

Chamfer dimensions

 

Description

1

Horizontal dimension of the chamfer.

2

Vertical dimension of the chamfer.

Top and bottom chamfer type

Option for top chamfer

Option for bottom chamfer

Description

Default

No chamfer

AutoDefaults can change this option.

No chamfer

Line chamfer

Convex arc chamfer

Concave arc chamfer

Stiffener offset

Stiffeners can be moved from the center of the beam horizontally or vertically. Enter a negative value to move the stiffeners in the opposite direction.

 

Description

1

Left stiffener vertical offset.

2

Center stiffener vertical offset.

3

Right stiffener vertical offset.

4

Left stiffener horizontal offset.

5

Center stiffener horizontal offset.

6

Right stiffener horizontal offset.

Bolts tab

Use the Bolts tab to control the bolt properties.

Bolt group dimensions

 

Description

1

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.

2

Dimension for horizontal bolt group position.

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

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.

7

Dimension for vertical bolt group position.

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.

 

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 assemblyset of bolt elements that consists of a bolt, a stud, or a screw, and possibly the related washers and nuts

.

If you want to create a holesmall hollow open throughout a part or assembly that is usually used for fastening parts with bolts or other such objects

Hole is created in the same way as bolts and hole properties are defined in the bolt properties.

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

Option

Description

Default

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

Welds

Click the link below to find out more:

Create welds

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