Holland Tunnel Vent Buildings Architectural and Structural Rehabilitation

The buildings originally constructed in the 20's were deteriorated. Most of the damage was exterior cracks on the mass masonry walls. The buildings were constructed from structural steel with concrete floors and shotcrete for the liners of the ventilation stacks pulling air from the tunnels. The top of the ventilation stacks were deteriorated and needed to be replaced. It was determined that it would be cost effective to replace the limestone in these areas with a simulated limestone precast concrete panel. This was designed to act composite with the new shotcrete backup. The corners of the buildings are to be rebuilt using a new concrete wall and brick facade that had to match the existing stiffness of the existing three with mass masonry wall.