Why San Francisco's Millennium Tower Is Sinking and Tilting

Practical Engineering · Explainer · 14 min · 2021 · YouTube title: What Really Happened at the Millennium Tower?

Why it's here

HN commenters point to it as the well-made, detailed explanation of the Millennium Tower debacle whenever the tower comes up.

What it covers

Practical Engineering explains why San Francisco's Millennium Tower is sinking and tilting, covering how geology and foundation design (friction piles in the Colma Formation) affect skyscrapers. It also covers the fix being attempted.