Modelling Slabs_1

Last modified by Thomas Gitsas on 2024/12/12 10:47

4.1 Building and Floor Settings Overview

  1. Access Floor Settings:

    In the Project Manager’s model tree, right-click on Model and select Buildings & Floors.

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  2. Review Floor Plan Drawings:

    Open the floor plan GA-0101 from the Project Manager by expanding the drawing node and double-clicking the file name.

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  3. Architectural Reference:

    The Lev_1_arch_xref.dwg file will serve as an architectural reference, and should be visible when you open the drawing.

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4.2 Adding Crane and Setup Marking

  1. Customize Element Data:

    In Precast Plan > Settings Plan, customize the element’s information display by turning on markers for element ID, elevation, and mass.

  2. Add Crane:

    Go to Precast Plan > Cranes > Draw Crane.

    Activate the crane for all floors and phases, setting restrictions if needed for angle and floor movement.

  3. Crane Capacity:

    The crane’s capacity lines will appear. If desired, you can turn off the crane’s visibility without impacting the element’s capacity checks.

4.3 Drawing Slabs by Area

  1. Define Slab Sections by Area:

    • The slab layout divides into nine areas: A to I. Draw the following slab types in each area:

      Area A: Hollow Core Slabs

      Area B: Prestressed Solid Slab

      Area C: Double Tee Slabs

      Area D, I and E: Solid Slabs

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Draw Hollow Core Slabs:

Go to Precast Plan > Hollowcore > Draw Hollowcore. 1733911184091-449.png

In the General tab, select section and strand patterns as needed, then proceed with Endcaps and Model tabs for additional settings.

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 Draw Window of Slabs for Area A. Make sure you move the cut slab back and forth and then press apply.

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The following .gif shows the whole process (including mirroring).

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4.5 Creating Balconies (Left Side, Area E)

Draw Balcony Slabs:

Use Polyline to outline the balcony slab, and then select the command draw slav, setting the thickness to 150 mm.

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For symmetry, draw one side of the balcony and mirror it to the opposite side.

Assign Endcaps:

In Properties, set endcaps and support lengths for each side of the balcony slab.

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Mirror Slabs for Symmetry:

With Precast Plan > Slab > Mirror Slab, mirror slabs from areas A–E to areas F–I, using the building’s centerline as a reference.

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Add Recesses on the Right Side:

Draw any additional recesses unique to the right side of the layout using Precast Plan > Components > Recess > Draw Recess.

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  1. Draw Prestressed Slab:

    • Use Precast Plan > Slab > Draw Prestressed Slab to create prestressed slabs in Area B, adjusting slab properties as needed.

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    Once you have picked the points you get the option to go around the edges and set endcap.

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  2. Draw Double Tee Slabs:

    • For Area C, use the Hollowcore tool to draw Double Tee slabs by changing the section to match the double tee specifications. 1733911184091-449.png

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  3. Draw Solid Slabs:

    • For areas D and E, go to Precast Plan > Slab > Draw Slab and select Solid Slab. Use the window method to define boundaries.

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    4.4 Drawing Slab Recesses

    Define Recess Locations:

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    Using Precast Plan > Components > Recess > Draw Recess, start defining the recesses in the slab according to the architectural layout.

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    After starting the command, click None on the command line, and then click on slab

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    Choose Recess Type:

    In the dialog box, select either Circle or Rectangle as needed. Check Cut Reinforcement if you want the bar mesh to be cut within the recess.

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    Note: Skip the large cut-out in the upper left slab area for now; this will be added later as a hanger detail.

  4. Column Recess Gap:

    For columns, add a 50 mm gap around each recess by either drawing or stretching with the offset command in AutoCAD.

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    5.1 Modifying Hollow Core Slab Properties

    1. Access Hollow Core Slab Settings:

      Go to Precast Plan > Hollow Core > Edit Hollow Core to open the edit properties for slabs (or Select the Slabs > Double -Click > Properties).

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OR

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  1. Change Strand Pattern:

    In Area A and Area F, set the strand pattern to 6. This pattern is pre-configured in the software.

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  2. Set Endcap Parameters:

    In the Endcaps tab, set the endcap to U4.

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    Adjust the Core Recess:

    Set the Top Recess Core to 5.

    For indent length (L3), enter 80 mm.

    Set the recess length (L4) to 600 mm.

5.2 Adding Lift Points

  1. Insert Lifts:

    In areas A and F, add lifts to hollow core slabs using Precast Plan > Hollow Core > Insert Lift. 

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    This adds lifting points, improving stability during transportation.

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  2. Core Filling Around Lifts:

    IMPACT will automatically add a core filling around each lift to reinforce the slab structure.

5.3 Adding Core Fillings

  1. Draw Core Filling:

    In Precast Plan > Hollow Core > Draw Core Filling, mark the area requiring fillings, such as the short side of the slab near a cut-out.

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  2. Edit Fillings as Needed:

    Adjust the filling area to fit design needs. For example, remove unnecessary cores from the filling area to maintain design integrity.

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  3. Update Mirror Settings:

    If any slabs in Area F were previously mirrored, delete the mirrored slab, make the updates to the original slab, and then re-mirror to ensure changes are applied correctly.

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5.4 Hanger Details

5.4.1 Configuring Hangers

  1. Access Hanger Setup:

    Open Precast Plan > Hollow Core > Hangers.

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  2. Set Hanger Support Length:

    Set the support length to 380 mm and hanger width to 100 mm.

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5.4.2 Creating Custom Hanger Detail

  1. Define Hanger and Plate Setup:

    Use Precast Plan > Hollow Core > Hanger Details to combine the hanger and cast-in plate details.

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    Set values for the distance from edge, adjusting as needed to control hanger position within the slab.

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  2. Customize Parameters:

    Test and adjust parameters in the dialog box to achieve a hanger detail similar to your specifications.

5.4.3 Drawing Hanger Details

Add Hanger to Slab:

Apply the hanger detail to slabs by selecting Precast Plan > Hollow Core > Draw Hanger Details.

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Place the hanger detail on relevant slabs to ensure stability and support.

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5.5 Saving Slabs

Finalizing and Saving Slabs

  1. Set Element Marking Standards:

    Assign specific element marks to different slab types:

    Hollow Core Slabs: HC100–HC199

    Double Tee Slabs: DT100–DT199

    Prestressed Solid Slabs: PS100–PS199

    Solid Slabs: S100–S199

    Balconies: E100–E199

  2. Save Elements to Database:

    Use Precast Plan > Slab > Save Slab to store the slab details in the database. The software will prompt you to specify the slab type if multiple types were selected for saving.

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Continue to the next part of the training here

 

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