A 2" rotation at 645' from the ground would tilt a horizontal floor plate at 1" level change per 322'-6". If I am not mistaken, that is a 1:3,870 slope ratio. I'm not sure if that would cause a glass marble roll on a hard polished floor, but I don't think anyone would otherwise notice.
As for the foundation settlement, I am hoping that it has now somewhat stabilized. Maybe it is something like stepping in wet sand or mud. You tend to sink down a little then stop. I am more concerned about earthquake affects. Is anyone here an expert on soils or structural foundations?
16 inches of vertical change seems great. Has anyone noticed any affect around the sidewalks and streets like stress cracks? The building height or distance measured for ground to top of structure is probably unchanged at 645'. I suspect more likely the ground elevation has lowered relative to sea level in and around the area. The building may be shorter relative to its surroundings rather than to itself.
Last edited by SFView; Aug 2, 2016 at 8:29 PM.
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