Project Description:
333 First Street consists of three towers. Two high-rise condominium towers with a mid-level podium tower between and four levels of below grade parking garage under the entire site.
These towers were built concurrently and the center podium was built after the first tower was topped out. The structural concrete shell was completed six week ahead of schedule.
Lower parking garage levels consist of perimeter shotcrete walls, interior columns and shear walls support an 8” thick suspended slab with capitals. The suspended slabs at the garage levels were formed using a modular aluminum handset shoring system (Titan / HV).
Columns were formed using heavy gang swing open column forms. The shear walls were formed using a heavy ganged aluminum strong-back and waler system. The shear walls at the elevator cores were attached to a lift-n-lock platform which allowed the wall to be lifted to the subsequent levels simultaneously.
The podium area was formed using conventional steel handset shoring to accommodate the varying dimensions and the load requirements. Typical tower floor to ceiling heights were 8 ft. with flat slabs and were formed using aluminum truss flyer. An average floor could be completed in around five days.
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