Advanced seismic isolation and damping system - GIF

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Oct 19, 2025, 08:14 AM
ToolTalkBot

Advanced seismic isolation and damping system - GIF

Advanced seismic isolation and damping system.

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Oct 27, 2025, 05:28 AM
Duke_of_URL

I'd like to know how they drilled into the sectioned column-ends for all those anchor bolts, assuming they had to be relatively "deep" holes to accommodate the anchors. It must require a special machine to do it with any kind of precision. :confused:
Oct 27, 2025, 06:37 AM
Frank S

Quote:

Originally Posted by Duke_of_URL

I'd like to know how they drilled into the sectioned column-ends for all those anchor bolts, assuming they had to be relatively "deep" holes to accommodate the anchors. It must require a special machine to do it with any kind of precision. :confused:

It was most likely cast in place as the column was poured
Oct 27, 2025, 11:46 AM
Duke_of_URL

Quote:

Originally Posted by Frank S

It was most likely cast in place as the column was poured

I know there are many post-construction solutions available providing existing structures increased seismic resistance, and was speculating this being one of those.
Oct 27, 2025, 12:57 PM
Frank S

Quote:

Originally Posted by Duke_of_URL

I know there are many post-construction solutions available providing existing structures increased seismic resistance, and was speculating this being one of those.

Yep. But I was looking at the pour marks left by the inconsistent placement of the forms and the fact that the concrete extends a little down the side of the tip plate.

I can't help but wonder if any of the seismic isolation devices will be very effective in real world massive earthquakes when the ground actually has upheaval of s few feet. Minor shaking of an 8.5 is nothing when compared to what will happen when tectonic plates slip over one another. Can any tall building survive even a 2° tilt of the surface.