Braced girder (89)
Braced girder (89) creates braced girders between selected points in a precast concrete part, such as in a thin-shell slab or in a sandwich wall 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 concrete.
Objects created
The girders consist of the following parts:
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Two bottom reinforcing bars
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One or two top reinforcing bars
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Two connecting reinforcing bars
Instead of using reinforcing bars, you can use profiles and plates to create the braced girders.
Use for
Situation | Description |
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Braced girders are created in the precast concrete slab. |
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Braced girders are created in the precast concrete sandwich panel. |
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Braced girders are created in a wide plate floor with an opening. |
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Braced girders are created in a hollow wall. |
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Profile as a girder. |
Selection order
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Select the concrete part.
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Pick the starting point of a girder.
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Pick the end point of a girder.
Part identification key
Part |
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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 reinforcement bars.
Reinforcing bar dimensions and shape
Description |
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1 |
Distance between the end of the top reinforcing bar and the picked point. |
2 |
Distance between the end of the connecting reinforcing bar and the picked point. |
3 |
Distance between the end of the bottom reinforcing bar and the picked point. |
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 |
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Girder creation
Option |
Description |
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Create |
Select the type of the bottom, top and connecting reinforcing bars (Bar a, b, c):
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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 bar properties for the top, bottom and the connecting reinforcing bars.
Option |
Description |
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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. |
Create as rebar assembly
You can add the created reinforcement as a rebar assembly to the cast units with a predefined assembly type, name, prefix, and start number.
Option | Description |
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Create as rebar assembly |
Select Yes to create all reinforcement as one rebar assembly, and to include it to the cast unit of the input part. |
Add to existing rebar assembly |
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Rebar assembly type |
Select the rebar assembly type. If you do not select the type, the default value of the rebar assembly is used. |
Name, Profile, Start number |
Define the name, profile, and start number. If you do not define these, the default values of the rebar assembly are used. |
Parts tab
Use the Parts tab to control the positioning and number of girders.
Workplane orientation
Option |
Description |
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Workplane position |
Use this setting to control to which side of the input part the girders are created.
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Position in plane Rotation Position in depth |
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.
Example |
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Braced girders are positioned to picked points. The braced girders are related to the top side of the part.
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Geometry
Option |
Description |
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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:
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Girder position in y direction
Select how the girders are positioned in the y direction.
Examples |
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Extra girders
Select whether additional girder groups are created.
Examples |
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For example, if you have selected this option:
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Extra girder groups is set to None: No additional girder groups are created between 2 existing braced girders.
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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.
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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.
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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 line.
Option |
Description |
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Examples |
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Existing girders |
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Additional girders |
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Geometry tab
Use the Geometry tab to control how openings and part length affect the girder creation.
Option |
Description |
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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 |
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No minimum length defined:
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Defined minimum length (no girder created):
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Double wall
Use the Double wall tab to select how a second concrete element affects the girders.
Look up sec concrete element
Select whether a second concrete element affects the creation of the girders. Define the class 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 |
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A hollow core wall where inside and outside shells have different geometry. Look up second concrete element = No
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A hollow core wall where inside and outside shells have different geometry. Look up second concrete element = Yes
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UDA tab
You can define UDAs.