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Committee continues tall-building safety hearing after engineer of record testifies Millennium Tower remains seismically safe today
Summary
At an eighth hearing prompted by the Millennium Tower—s settling and tilt, the committee heard under-oath testimony from the structural engineer of record that the building is seismically safe today but that geotechnical questions remain; the committee will continue the item and summon geotechnical experts for follow-up.
The Government Audit and Oversight Committee held the eighth hearing on tall-building seismic safety on Oct. 18, focusing on the Millennium Tower (301 Mission Street) after the tower—s post-construction differential settlement and lean became publicly scrutinized. The committee subpoenaed and heard under oath Derek Rorta, a structural engineer who served as the project—s structural lead while at DeSimone, and received updates from the Department of Building Inspection (DBI).
Supervisor Aaron Peskin summarized the concern driving the hearings: the Millennium Tower has settled and tilted more than originally projected, which raised questions about peer review, foundation design and whether current permitting practices adequately protect public safety. DBI assistant director Ron Tom told…
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