extension of the Broadway sidewalk. A grandstand of bleacher-style seating on the far corner of the plaza rises at a similar angle to the canopy. Structural glazed walls bring daylight into three stories of rehearsal space and classrooms in the extension, and the protruding dance studio is suspended beneath its soffit. East-west running trusses were installed between the third and sixth levels to carry the load for the four floors of the expansion, the longest of which has a back span with a cantilever. Some of the trusses’ diagonals needed to be offset to accommodate doors, passageways, and other obstructions. Steel diagonal brace frames extend from the ground to the roof to support the lateral load. Acoustician Mark Holden and his team measured every surface of the old performance hall to determine which were re-radiating the noise of the subway, and found that the stage and seating floors, and proscenium stage's vertical panels were the responsible members. The new floors sit on a floating concrete slab with a rubber pad, and the spin walls are mounted on giant rubber isolators, which work to mitigate the sounds of the subway. Significance Elizabeth Diller called Lincoln Center the “place that architects love to hate,” but said that DS+R wanted to give it a “second chance.” It had long been criticized by the architectural community, due to the general dissatisfaction with the complex's overall feeling of detachment from its urban environment (the consequence of an antiquated architectural and planning ideology), the unsavory forms of the main theatre buildings, and the inadequacies of the actual performance spaces. The Juilliard Building, by comparison, received far more favorable reviews, especially with regard to its performance spaces. Despite its improvements over the superblock buildings, it was not without its problems: no clear, distinct public entrance for Tully Hall, the massive exterior stair and footbridge, lack of engagement with Broadway (either its social vitality and unique diagonal shape). The expansion of Juilliard and the comprehensive renovation of Alice Tully Hall resolve many of the original building's issues, meeting the program requirements of the Juilliard School while actively engaging the once-reclusive Juilliard building with Broadway and Lincoln Square, making it an integral part of the area's vibrant street life. Furthermore, the expansion and renovation successfully merge the Brutalist/Modernist language of the original building with the contemporary Post-Modernist language of the addition. It is this Post-Modern language that interacts most