Here in earthquake country, we prefer that our high-rises not sink or tilt. So the more Millennium Tower settled into soft bay landfill, the more unsettled San Franciscans became.

Yet even as Millennium undergoes an expensive, complex foundation fix, a developer has proposed the tallest tower of the post-sinkage era — and it’s eager to share the engineering techniques it will employ to avoid a similar fate.

Earthquakes, sinking and wind: Here’s what it takes to build a skyscraper in S.F.

A scale model of the high-rise development at 50 Main St., in black, with the surrounding downtown skyline. (CPP)

Earthquakes, sinking and wind: Here’s what it takes to build a skyscraper in S.F.

A parking garage currently stands at 50 Main St., where a 1,000-foot building is planned. (Kevin N. Hume/The Examiner)

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Infrastructure reporter

Benjamin Schneider is the Examiner's housing, transportation and infrastructure reporter.

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