Slab Tool Settings

Slab Thickness: Enter a value for the slab’s thickness.
Note: If the structure of the slab is a composite, then the slab’s thickness is defined in Options > Element Attributes > Composites, and equals the sum of the skins’ thicknesses. A composite slab’s thickness cannot be edited in Slab Settings; you must go to Options > Element Attributes > Composites.
Offset to Home Story: Define an offset for the Slab’s reference plane from its Home Story. The reference plane has several possible settings. (See Reference Plane.)
Current: The Slab’s Home Story will be the Current Story.
Select Home Story: Choose a story to which to link the Slab. Click Select Story to bring up the full list of stories in the project, if they are not all shown in the list.
Offset to Reference Level: Define an offset for the Slab’s reference plane from the given Reference level (by default, this Reference level is Project Zero).
Note: This offset value serves as a calculation tool only, not a link. If you change the position of a Project Reference level, the Slab will not change its position.
Click one of these icons to define the Slab as Basic or Composite, and then choose an attribute that reflects its structural properties:
For a Basic Slab: use the pop-up to choose its Building Material.
For a Composite Slab: use the pop-up to choose its Composite structure.
Note: This pop-up shows only those Composite Structures whose “Use With” control includes Slabs. Composites are defined at Options > Element Attributes > Composites.
Note: You can set a different custom edge angle for any single edge(s). If you have done so, a yellow “custom” icon appears alongside the edge type setting control in Slab Settings.
Note: If the chosen composite structure has no core, then the core-related reference plane choices are grayed out.
Show on Stories: Use the pop-up list to set the stories on which to show the Slab.
Home Story only: The outline of the entire slab will be displayed and editable on its Home Story only.
All Stories: The outline of the entire slab will be displayed on every story of the project.
Other options are to display the slab on its Home story plus one story up and/or down.
Custom: Choose this option if you wish to show the slab on any other combination of stories. The Show on Stories: Custom Settings dialog box appears, where you can set separate story display options for the slab outline and its fill.
Note: Fills can only be displayed on stories where the outline is also visible.
Note: The line type of slabs displayed on remote stories is set in Options > Project Preferences > Legacy.
Cut Surfaces: In this section, set the attributes displayed for cut surfaces both in Section and on the Floor Plan.
For a basic Slab:
For either a basic or composite Slab:
Outlines: These settings apply to the line type and pen color of slab outlines that fall below (Uncut) the Floor Plan Cut Plane.
Overhead Lines will be displayed if the Floor Plan Display pop-up is set to “Projected with Overhead” or “Overhead All”.
Uncut Lines will be displayed if the Floor Plan Display pop-up is set to “Projected” or “Outlines Only.”
Cover Fills: Check this box to display a cover fill using the fill and pen settings chosen here.
Note: Only those Fills defined as Cover Fills in Options > Element Attributes > Fill Types are available here.
Use Fill from Surface: Check this box if you want your cover fill to resemble the element’s top surface (vectorial 3D hatch), either as defined in the Building Material or (if the override is on) its top surface override
Cover Fill Orientation: This control defines the orientation of the fill pattern. Select the control, then choose an orientation definition from the pop-up opened with the black arrow:
Link to Fill Origin: If you choose this option, then the cover fill will show a fill handle when you place the slab on the Floor Plan. You can then manipulate the fill orientation by selecting and moving the fill handle. (Use the “Move Sub-Element” command from the pet palette.)
Note: Fill handles are only displayed if you have enabled View > On-Screen View Options > Fill Handles.
Link to Project Origin: The fill pattern will start at the Project Origin, and the part of the pattern that falls within the Fill’s boundary will be displayed. No fill handle appears.
Distorted Fill: The Fill pattern can be distorted by altering the lengths and directions of its double fill handle.
Override Surfaces: Click the toggle button of any or all three pop-ups if you wish to override the surface assigned to this element (in its Building Material). You can override the surfaces of the Slab faces, and/or all Slab edges.
Click the chain icon to assign the last surface chosen to all faces and edges. Deselecting the chain icon will restore the surfaces that you originally set for each face/edge.
Note: The chain icon is available when all the surfaces use overrides.
Note: The top-side surface override, if it is a vectorial hatching, can also be applied as a cover fill for the Slab (by checking the “Use Fill from Surface” box in Floor Plan & Section panel of Slab Settings). Moreover, if the cover fill has a customized fill origin (via Link to Fill Origin option), the 3D Model will reflect that fill orientation too.
Custom Edge Surface: If you have customized any of the Slab’s Edge surfaces (in the Custom Edge Settings dialog box), a yellow “custom” icon appears alongside the surface setting control in Slab Settings, indicating that one or more edge surfaces have been changed from the general setting.
Custom Texture Alignment: If this message is activated, it indicates that the currently selected slab (already placed in the project) has been assigned a custom 3D texture.
In this case, the Reset Texture button is also activated. Click to restore the origin of the Texture of the selected slab.
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