Place a slab by object boundaries - Intergraph Smart 3D - Help - Hexagon

Select Structural Tab > Slab Command to display the Place Slab Controls.

Select the parent system for the slab.

Select the Type, Composition, Face Position, and Thickness for the slab.

Select the support plane of the slab. You can select multiple planes to place multiple slabs at the same time. For example, if you have a multi-story building with the same floor geometry and you want the same size and type of slab on each floor, you can select the plane for each floor. You can select each floor elevation plane, and then define the boundaries on one floor. The software uses the same boundaries for each elevation level and places the slabs. After placement, the slabs are unrelated to each other and can be edited as individual entities.

• Select Coincident to specify that you want the slab placed on the support plane that you select in the model. This plane could be an elevation plane of a coordinate system, an existing slab, the top plane of a flange, or any other flat surface that the software allows you to select. If this selected plane moves after the slab is placed, the slab moves with it.

• Select 3 Points Plane to specify the support plane using three points that you specify in the model.

Optionally, type an offset distance from the selected support plane.

Select Define Boundaries when you are finished selecting support planes.

Define the outside boundaries of the slab. You can define the slab boundaries by selecting objects in the model or by drawing the boundary. If you select objects in the model and those objects are moved, the software automatically resizes the slab to maintain the boundary relationship. For example, you can select the outside edge of a beam flange as a boundary along one side of a slab. Later, if the section size for the beam is changed and the flange edge moves out an inch, the software automatically moves the edge of the slab an inch to match the new location of the flange edge.

As you select boundary objects, make sure they form a closed shape (that is, there is an edge for each of the four directions).

The selected boundary objects highlight in blue.

Define an offset distance for each boundary that you have defined. Select a row to highlight the boundary in the model. Then, type the distance from the boundary to place the edge of the slab. Type 0 to place the slab edge on the boundary. Type a negative number to offset the slab inside the boundary. Type a positive number to offset the slab outside the boundary.

To remove a boundary, select the boundary in the list and select Delete . Select Remove All to delete all selected boundaries.

Select Accept to indicate that you are finished selecting boundaries.

Complete the placement:

• Select Finish or press CTRL + ENTER to save your changes and exit the command.

• Select Finish and Modify or press CTRL + SHIFT + ENTER to save your changes, and then start the modification of that object.

• Select Finish and Repeat or press SHIFT + ENTER to save your changes, and then restart the command using the same options.