@Reverse Bias:
Well, it was dark, and looking straight down on a scene where not much horizontal shift had occurred, it might not be obvious from above that anything had happened directly below.
Having said that, I think it likely that at least some of the occupants of the west part of the...
IEGeezer,
If the column failed at the bottom, would you not expect the first signs of detachment to appear at the bottom first? I would expect that as the column tore itself away from the floor slabs, they would fail progressively upwards.
cheers
tony
Assuming that Josh's theory about the slab failing in tension at the southern boundary is correct (and it sounds feasible), on failure, I would expect the southern edge of the slab to jerk away from the wall on failure, but surely it would move no more than a fraction of an inch - Josh estimated...
