Design (special)

Precast Slab module

Owing to the wide range of parameters available for the factory configurations, catalogs and the parameters currently set by the user during the process of element design or modification and the current geometry of the element (outline or recesses), it can happen that bars or lattice girders of the basic reinforcement are not created and, consequently, individual parts of the element (e.g. corners with acute angles, narrow webs between recesses or between recesses and the edges) are not reinforced. The program does not check that all the bars and lattice girders are actually created.

That is why you need to spend some time thinking about how to handle non-rectangular element outlines and recesses. These considerations can be described as "engineering thinking". This is exactly the reason why working with the Precast modules requires some experience. In particular, you should not create production data without checking the reinforcement beforehand.

Note: The procedure for slab element design for half floors varies depending on the option you have selected in the Catalogs and Configurations module - Configurations - Configuration Menu - Half Floor - Entry - BS number:

• Specific type of entering slab spans selected
• Specific type of entering slab spans not selected

The following description applies when you have selected the specific type of entering slab spans. This options is only available for half floors.

To enter a roof/slab span

1. Click Design (How).
   

   Activate Design in one of the following ways

   • Menu bar: Create Precast Factories Precast Floor

   • Palette: Tools Create area in the following module(s):

   Precast Floor

2. Select the Half Floor slab type.

   Note: Other slab types are always entered as described in specific type of entering slab spans not selected .
   The slab types that are available to you depend on the configuration you have purchased.

3. Depending on the license, you can create half floors with additional filling objects by clicking Create filling objects. You can define settings for filling objects and spreader ribs in the ‘Filling Objects, Spreader Ribs’ dialog box.
4. Depending on the license, you can create a layer of tiles at the bottom by clicking Create facing layer at bottom. A dialog box opens where you can select an entry from the placement pattern catalog.

   The selected placement pattern is created as soon as you confirm the settings on the Design Placing Region Context toolbar. The starting point of the placement pattern is located at the element's origin. Tiles are not created in the area of the defined support widths.
   Note: It is not possible to install the tiles rotated at an angle or define tile areas with special placement conditions, as with walls with facing layers.

5. Click Properties to enter the basic parameters for designing and reinforcing the slab/roof panels.
6. Click the button to see more parameters for modification.
7. If you want to design a slab, enter the placement polygon. If you are designing a roof, click the required roof surface and then draw the placement polygon.
8. Enter a value (in degrees) for the span direction in the dialog line or use the context toolbar to define the span direction in one of the following ways:
   • Click to define the span direction by entering two points.
   • Click the data entry box to enter a value for the span direction at the keyboard.
   • Click to change the direction of span in the active placing region by +90 degrees.
9. Click OK to confirm.
10. If you selected the prompts for the support values, bar overlaps or bending shapes in the design parameters, the program will prompt for the supports, bar overlaps or bending shape numbers for the selected edges of the placement polygon in the dialog line.
11. Enter the values for the supports and bar overlap (in cm) and press ENTER to confirm each value.
12. Specify the bending shape by entering a number. You can assign a number to each bending shape using the Configurations (Catalogs and Configurations module - Configuration Menu -Half Floor - Entry - BS Number). Use the +/- keys on the numeric key block to select a bending shape. Confirm your entries by pressing ENTER.
13. Then go on to the next edge of the placement polygon. Repeat step 8 and the following steps. If you cancel part way through this process, then all the remaining entries are filled with default values.
14. When all the supports, bar overlaps and numbers of the bending shapes have been entered, you can then select your required division parameters e.g., direction of span, half or standard panels, set points for element design etc. by clicking Design Placing Region in the context toolbar.
    Note on designing slabs:
    If you want to change the support conditions, click the side of the slab.
15. Click OK to confirm your entries, reinforcing the active placement. If you want, you can still change the placement or basic reinforcement later by clicking Modify Design (How).
    

    Activate Modify Design in one of the following ways

    • Menu bar: Modify Precast Factories Precast Floor

    • Palette: Tools Modify area in the following module(s):

    Precast Floor