Turning the Structural Analytical Model on, we see that the Beams’ 1D Members (axes) are not connected to the Slab: there is no continuity, which is necessary for structural analysis.
The solution is to generate a rule that offsets the Beam axes to the Slab.
•Members Group 1: Beam
•Members Group 2: Slab
•Method: one to the other (adjust Beams to Slabs)
•Adjuster type: Offset
•Additional options, including the maximum allowed offset.
In this case, let’s use the global Z direction.
Note: The defined tolerances are length-type values: the units specified for Length in Preferences > Working Units apply.
Click OK to apply the rule. As expected, the Beam axes are offset to the plane of the Slab (straight up, in the Z direction).
But one of the Beams’ axes (the center Beam) stayed in place. This seems to be an error.
Select the center Beam and check its Settings. Here, it is clear that this Beam did not participate in the Offset rule, because the element-level Offset setting, in Beam Settings - Structural Analytical Parameters panel, is unchecked.
To fix the problem:
•Activate the Offset checkbox in Beam Settings.
•Click OK to close the Settings dialog.
Now the model automatically applies the defined Generation Rules. The Beam axis is now offset, according to the rule:
The current rule offsets Beams to Slabs in the Z direction. This model can be considered structurally correct.
You may prefer a different option: Beam axes should be offset to the edge of the Slab.
Adjust this option in Generation Rules:
Click OK to apply the rule.
As expected, the axes of the two edge Beams are offset to the edge of the Slab plane (instead of straight up, as in the previous example, in which only “Global Z offset” was enabled).
If the element could be offset to several target elements, define which element should be the target.
The preview drawing helps you understand each option:
