Braced girder (88)

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

Software version: 
2019i

Braced girder (88)

Braced girder (88)

Braced girder (88) creates braced girders in a precast concrete part, such as in a thin-shell slabplate that represents a concrete structure

In Tekla Structures, a slab is created by picking three or more points.

Slab may be part of a floor, for example.

or in a sandwich wallplate that represents a structure such as a wall or roof panel

In Tekla Structures, a panel is created by picking two or more points.

In cast-in-place concrete the term wall refers to a concept similar to panel.

panel. The girders are cast into the concrete part and they also work as a part of the reinforcement and as a connector between the precast and cast-in-place concretecast unit type where the concrete is formed, poured, and cured in its final position

.

Objects created

The girders consist of the following parts:

  • Two bottom reinforcing bars

  • One or two top reinforcing bars

  • Two connecting reinforcing bars

Instead of using reinforcing bars, you can use profiles and plates to create the braced girders.

Use for

Situation Description

Braced girders are created in the precast concrete slab.

Braced girders are created in the precast concrete sandwich panel.

Braced girders are created in a wide plate floor with an opening.

Braced girders are created in a hollow wall.

Profile as a girder.

Selection order

  1. Select the concrete part.

    The girders are created automatically.

Part identification key

 

Part

1

Top reinforcing bar

2

Connecting reinforcing bar

3

Bottom reinforcing bar

Picture tab

Use the Picture tab to control the creation, shape and dimensions of reinforcing bars.

Reinforcing bar dimensions and shape

 

Description

1

Distance between the end of the top reinforcing bar and the part end.

2

Distance between the end of the connecting reinforcing bar and the part end.

3

Distance between the end of the bottom reinforcing bar and the part end.

4

Radius of the connecting reinforcing bar.

5

Distance between bendings.

Define the distance between the bottom reinforcing bars, and the distance between the top and bottom reinforcing bars.

If you add two reinforcing bars at the top, you can define the distance of these reinforcing bars from the top of the connecting reinforcing bars.

Examples

Girder creation

Option

Description

Create

Select the type of the bottom, top and connecting reinforcing bars (Bar a, b, c):

  • Reinforcing bar
  • Steel rod
  • No (The reinforcing bar is not created.)

Profile

Profile selection is activated when you select the following girder option:

Define a prefix and a start number for the part position number, and material, name, comment, and class.

Plate

Plate creation is activated when you select the following girder option:

Define a prefix and a start number for the part position number, and material, name, comment, and class.

Add as

Select the method that is used to connect the girders to the cast unit:

Sub-assembly , Welded , No

Reinforcing bar properties

Define the reinforcing barreinforcement that represents a steel bar used to reinforce a concrete structure

The steel bars are usually ribbed and they are used to increase the tensile strength of concrete.

properties for the top, bottom and the connecting reinforcing bars.

Option

Description

Size

Size of the reinforcing bar.

Grade/Material

Grade of the reinforcing bar.

Name

Prefix

Start number

Comment

Class

A name, a prefix and a start number for the part position number, and comment and class for the reinforcing bar.

Parts tab

Use the Parts tab to control the positioning and number of girders.

Workplane orientation

Option

Description

Workplane position

Use this setting to control to which side of the input part the girders are created. The Model option creates them according to the current work plane in the model.

  • Part XY plane
  • Part YZ plane
  • Part ZX plane
  • Model
 

Use the Position in plane , Rotation and Position in depth options to define the orientation of the girder on the work plane.

Girder position in z direction

Select how the girders are positioned in the z direction.

Examples

Geometry

Option

Description

Multiple L factor

Define the accuracy for the rounding of the girder length.

The default value is 1.0. With the default value, there are no decimals in the girder length.

Geometry

Select the geometry for the connecting reinforcing bars.

Examples:

Girder position in y direction

Select how the girders are positioned in the y direction.

Examples

Extra girders

Select whether additional girder groups are created.

Examples

For example, if you have selected this option:

Extra girder groups is set to None : No additional girder groups are created between 2 existing braced girders.

Extra girder groups is set to By number : Additional girder groups are created based on the entered number. Distances between the groups are equally divided.

Extra girder groups is set to By distance : The number of additional girder groups is based on the defined distance. The distances between the girder groups are equally divided.

Girder group

Define whether additional girders are created from the existing girders.

Number is the number of girders in the girder group.

Distance list is the distance between the girders in the girder group.

e = is the position of the girders from the reference lineline between two reference points

For example, if the user picks two points to position a beam, these points form the reference line, and handles appear at the line ends.

Reference lines can be used in snapping in a snap switch.

.

Option

Description

  • Girder group is positioned in the middle of the reference line.

  • Girder group is positioned on the right side of the reference line.

  • Girder group is positioned on the left side of the reference line.

Examples

Existing girders

Additional girders

Geometry tab

Use the Geometry tab to control how openings and part length affect the girder creation.

Option

Description

Create always girders

Select whether girders are always created.

If you select Yes , girders are created even when the girder is placed fully outside the concrete part.

Openings

Select whether girders are created in openings.

Length

Select how girders adapt to the part shape.

Minimum length

Define the minimum length of the girder.

Maximum length

Define the maximum length of the girder.

The girder is split when the maximum length is reached.

Examples of minimum length

No minimum length defined:

Defined minimum length (no girder created):

Double wall tab

Use the Double wall tab to select how a second concrete element affects the girders in Braced girder (88).

Look up sec concrete element

Select whether a second concrete element affects the creation of the girders. Define the classpart property that groups parts according to identifiers given by the user

The identifiers of classes are usually numbers. Classes can be used for defining the color of parts in the model, for example. Class does not influence the numbering of model objects.

of the second wall in the Class box.

Select the first wall, and if the second wall matches the defined class, a girder is created. You can also enter a series of classes. You can use this creation method in combination with the options defined for openings on the Geometry tab.

The example below shows a hollow wall where inside and outside shells have different geometry.

Examples

A hollow core wall where inside and outside shells have different geometry.

Look up second concrete element = No

A hollow core wall where inside and outside shells have different geometry.

Look up second concrete element = Yes

UDA tab

You can define UDAs.

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