The Lumina at 201 Folsom Street

The Lumina is a luxury condominium development and has four buildings, two towers of 37-stories and 42-stories and two mid-rise plaza buildings of 8 stories each. This project includes 656 residential units. At 1.4 million square feet, this landmark high-rise project kept our inspectors busy. ISI provided full-time inspections and materials testing for the underpinning, reinforced concrete, post-tensioned slabs, structural steel welding, anchor proof load testing, and fire-proofing. The three-level deep excavation was in bay mud and consisted of a shotcreted soil nail wall system and reinforced concrete slabs and columns. The superstructure was reinforced concrete, post-tensioned decks, with a core wall system in each building which provide shear.