Overlaying Mesh for Complex Urban Geometries

Hi everyone,

Another peculiar problem that might actually be the cause of the issue. As seen in the two figures taken from identical angles, the floor elevation consisting of a sloped gradient has disappeared in the meshing phase.

Original Model before meshing

After meshing (Red is the elevated flat floor)

Any ideas on what might be causing the floor to disappear? I suspect once this is fixed, the meshing issues will be resolved.

Cheers.

Regards,
Barry