Steel assemblies Tekla Structures creates basic assemblies of steel parts when you use a workshop weld or bolt to join parts. Assemblies and their main parts are automatically defined when you: • Create single workshop welds or bolts. • Apply automatic connections which create workshop welds or bolts. You can also create nested assemblies by adding sub-assemblies to existing assemblies, or by joining assemblies together. Concrete cast The concrete structures in Tekla Structures are modeled as single parts. By default, each part is units considered a separate cast unit. For construction purposes you may need to merge several concrete parts into one cast unit. For example, a single cast unit could consist of a column with corbels. You need to specify which parts form the cast unit. Cast units can include reinforcement, as well as concrete parts. Main parts The main part in a steel assembly has other parts welded or bolted to it. By default, the main part is not welded or bolted to any other parts. The main part in a concrete cast unit is the one with the largest volume of concrete. You can change the main part in an assembly or a cast unit. Checking To visually check the objects in a cast unit or an assembly, click Tools > Inquire > Assembly contents Objects. Select a part in the cast unit or assembly. Tekla Structures highlights the other parts that belong to the same cast unit or assembly. Tekla Structures uses different colors to highlight different objects: |
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To check the sub-assemblies in a nested assembly, right-click the assembly and select Assembly > Show Assembly from the pop-up menu. Tekla Structures draws an orange box around each assembly. |
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3. Right-click and select Assembly > Add as sub-assembly on the pop-up menu. 4. Select the assembly to add to. To join existing assemblies without adding any loose parts: 1. Ensure that the Select assemblies switch is active. 2. Select the assemblies you want to join. 3. Right-click and select Assembly > Make into Assembly from the pop-up menu. When you use this method to create a nested assembly, by default the assembly with the largest volume will become the main assembly. To change the main assembly, use the Set as New Main Object of Assembly command. Creating sub-assemblies of assembly parts You can create sub-assemblies of parts that are already in an assembly. Usage 1. Ensure that the Select objects in assemblies switch is active. 2. Select the parts you want to include in the sub-assembly. 3. Right-click and select Make into Sub-Assembly from the pop-up menu. Removing objects from assemblies To remove parts from an assembly: 1. Select the part to remove. 2. Right-click and select Assembly > Remove from Assembly on the pop-up menu. To remove sub-assemblies from an assembly: 1. Select the sub-assembly to remove. 2. Right-click and select Assembly > Remove from Assembly on the pop-up menu. To explode an assembly: 1. Select the assembly. 2. Right-click and select Assembly > Explode on the pop-up menu. |
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When you explode a nested assembly, Tekla Structures breaks the assembly hierarchy level by level, always starting from the highest level. You need to use the Explode command several times to break a nested assembly back to single parts. | |||
T | Use the Explode Sub-Assembly command to explode sub-assemblies to single parts without breaking the entire assembly hierarchy. | ||
Usage | Exploding sub-assemblies You can explode sub-assemblies to single parts without breaking the entire assembly hierarchy. 1. Select the sub-assembly you want to explode. 2. Right-click and select Assembly > Explode Sub-Assembly from the pop-up menu. |
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Working with cast units | |||||||
Creating cast units | To create a cast unit: 1. Click Modeling > Cast unit > Create. 2. Select the objects to form the cast unit. 3. Click the middle mouse button to create the cast unit. To add objects to a cast unit: 1. Click Modeling > Cast unit > Add to. 2. Select the object to add. 3. Select an object in the cast unit. |
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Adding objects | |||||||
v | You can also add custom components to cast units using the Add to command. | ||||||
To add a custom part to a cast unit: | |||||||
1. Ensure that the Select components switch | *Ji | is active. | |||||
2. Click Modeling > Assembly > Add as Sub-Assembly. 3. Select the custom part. 4. Select the cast unit. |
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Removing objects | To remove objects from a cast unit: 1. Click Modeling > Cast unit > Remove from. 2. Select the object to remove. To explode a cast unit: 1. Click Modeling > Cast unit > Explode. 2. Select an object in the cast unit. When you select cast units for copying, ensure that the Select assemblies switch active. |
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Exploding cast units | |||||||
Copying cast units See also |
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Cast unit type To define whether a concrete part is precast or cast in place: 1. Open the concrete part properties dialog box. 2. Go to the Cast unit tab. |
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TEKLA STRUCTURES 14.0 Parts | 77 | ||||||
3. In the Cast unit type list box, select Precast or Cast in place. | |||
T | Tekla Structures checks the cast unit type of the cast unit main part each time you create or modify a cast unit. Tekla Structures does not mix precast and cast-in-place parts inside a cast unit. | ||
Defining and showing the top-in-form face To indicate the casting direction of a concrete part, you can define the top-in-form face of the part and show it in model views. The top-in-form face will appear in the front view in drawings. Preconditions Create the concrete part. Usage To define the top-in-form face of a concrete part: 1. Click Modeling > Cast Unit > Set Top in Form Face. 2. Select the part face which will face upwards in the form. To show the top-in-form faces of concrete parts in a model view: 1. Click Modeling > Cast Unit > Show Top in Form Face. 2. Select the parts. Tekla Structures highlights the top-in-form faces in red: |
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You can also right-click the part and then select Cast Unit > Set Top in Form Face or Cast Unit > Show Top in Form Face from the pop-up menu. | |||
To hide the top-in-form faces from a model view, select the view, right-click, and then select Update Window from the pop-up menu. | |||
In drawings, use the Fixed coordinate system to show the top-in-form face in the front view. | |||
See also Defining concrete part orientation Coordinate system |
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Changing the assembly or cast unit main part | |||
Use the Inquire commands on the pop-up or pull-down menu to check which is the main part in an assembly or cast unit. To change the main part in an assembly or a cast unit: 1. Click Modeling > Assembly > Set as New Main Object of Assembly. 2. Select the new main part. |
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T* | You can also select the part first and then select Assembly > Set as New Main Part of Assembly from the right-click pop-up menu. | ||
Changing the main assembly | |||
You can also change the main assembly in a nested assembly: 1. Click Modeling > Assembly > Set as New Main Object of Assembly. 2. Select the new main assembly. |
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You can also select the assembly first and then select Assembly > Set as New Main Sub-Assembly from the right-click pop-up menu. |