1330 Avenue of the Americas, New York, NY

Plaza Restoration

Plaza Restoration

1330 Avenue of the Americas is a high rise building with a two level plaza.  The plaza has had a long history of water infiltration, which has caused structural damage such as deteriorated waterproofing, delaminated fireproofing, active leaks and rust corrosion.  Design flaws consisting of negative pitch, lack of drains and nonexistent base flashing in the plaza has accelerated the deterioration of the waterproofing membrane further affecting the concrete and steel structure.

Diaz Architects’ design consisted of reconstructing the upper and lower plaza and handicap ramps including replacing the waterproofing membrane.  Drainage composite will improve the quick drainage of water to minimize damage from freeze/thaw cycles and act as a protection barrier to the waterproofing membrane.  A lightweight modified polymer concrete was installed on the structural slab to provide some positive subsurface drainage away from the vulnerable base flashing. The face brick of the stair walls will require removal to allow for waterproofing of walls.  The walls can be reclad with granite.  The sidewalk curbs were replaced where damaged.  A large planter was incorporated in order have the capability of supporting an art sculpture.