Adam Clayton Powell State Office Building
New York, NY
The Adam Clayton Powell State Office Building is a 20-story tower built in 1970. The building facades combine limestone and granite cladding with aluminum and glass curtain walls. SUPERSTRUCTURES investigated the building facades from suspended scaffolding. Our in-house conservation studio developed an environmentally-friendly cleaning program for the limestone masonry based on field tests. A comprehensive report was issued with prioritized recommendations and detailed estimates. SUPERSTRUCTURES prepared construction documents and provided construction administration services for facade and curtain wall restoration, including the replacement of 1042 single glazed pivoting sashes with new thermally efficient windows and insulating glass.