During meshing process, the program post several warning messages in Meshing Process Status dialog. They are briefly explained here.

Failed to Mesh Diaphragm x on Story y. The Diaphragm Will be Set to Rigid.

Solution:

Check slab edges and exterior beams. In order to generate a valid mesh, a closed exterior polygon is necessary. Check openings inside diaphragms. Any openings crossing each other or touching each other at several points might cause problems. Check that any lateral member is crossing an opening. Even though the program is capable of handling this case, it is still possible that it may not resolve it completely. As a final resort, changing Diaphragm Boundary flag from slab edge boundaries to exterior beam boundaries (or vice versa) might provide a temporary solution.

Failed to Mesh Diaphragm x on Story y for Load Polygons. Gravity Loads on Diaphragm will be ignored.

Solution:

Check surface load polygons applied in the Modeler. If possible, remove unnecessary load polygons applied to diaphragms (for instance, surface load polygons found in overlapped regions). If possible, avoid too many overlapping load polygons.

Failed to Mesh Diaphragm x on Story y for Mass Load Polygons (Simplifying Surface Load Polygons on this Diaphragm May Resolve it)

Solution:

Check surface load polygons applied in the Modeler. If possible, remove unnecessary load polygons applied to diaphragms (for instance, surface load polygons found in overlapped regions). If possible, avoid too many overlapping load polygons.

Failed to Create Closed Beam-Loop for Diaphragm x on Story y. Slab Edges are Used for Diaphragm Exterior Boundaries.

Solution:

Make sure that there is a valid closed beam-loop for the diaphragm (closed beam-loop is constructed from the most exterior beams along diaphragm edges).

Deck properties for some elements on story y for diaphragm x cannot be identified. These elements are not included in analysis. Please check the mesh on this diaphragm.

Solution:

This message indicates that diaphragm is successfully meshed but the program fails to identify properties for each finite element (i.e., E, thickness, poisson’s ratio, etc…). These finite elements are excluded in analysis (see meshed diaphragm on screen, and they can be easily identifiable). Make sure that valid deck properties are assigned to each deck.

No Dead Load Case Selected for Analysis P-Delta Effects for Semirigid Diaphragms are not calculated.

Solution:

In order to calculate P-Delta effects for semirigid diaphragms, at least dead load case is needed to be selected for analysis. Otherwise, the program skips P-Delta effects for semirigid diaphragms.