First test pile operation did not increase building settlement at troubled foundation fix of San Francisco's Millennium Tower.

By installing a pilot pile for the settling Millennium Tower's troubled foundation repair, Shimmick Construction hopes to prove the efficacy of revised construction methods so that work can continue without triggering accelerated building settlement.

Work on the nearly $100-million perimeter pile upgrade on the 645-ft-tall residential tower to prevent significant future settlement follows the resolution of litigation.